Use of a bacterium isolated from the genus

The invention relates to a bacterium isolated from the genus ...

AN ANTENNA FOR AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS AND ITS APPLICATIONS

An antenna (3) of an electromagnetic probe (1) used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base (31) and a first antenna element (32). The conductive base (31) comprises an opened non- resonant cavity (33). The first antenna element (32) is embedded in the cavity (33) and goes right trough the cavity. The first antenna element (32) is comprised of a center-split half-coaxial wire so as to define a symmetrized antenna radiation pattern.

Energy radiation generator with bi-polar voltage ladder

A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

Turbine wheel for a turbine engine

A rotating assembly for a turbine engine comprises: a disc 10; axially engaged blades 12 radially extending from the disc having lateral platforms 22 and fir-tree roots 14 (Fig. 1) that engage slots 16 and teeth 18 of the disc; and a downstream shroud 34 which includes an outer sealing lip 38, an inner annular sealing lip 40, and an intermediate sealing lip 48, where in the intermediate annual sealing lip 48 is opposite the downstream faces of the disc teeth 18 and the blade roots and radially located between an outer slot cavity 20a and an inter-blade cavity 26 formed by platforms laterally extending from the blades and being circumferentially arranged end-to-end, forming inter-blade cavities 26. The rotating assembly may furthermore incorporate an upstream shroud, a high pressure turbine, air cooling transfer means and be for a turbine. The assembly is for reducing heating of cooling air around turbines.

A TOOL FOR DOWNHOLE FORMATION EVALUATION

An apparatus for determining a property of a downhole formation, the apparatus comprising: an array having a plurality of transmitters and receivers capable of propagating electromagnetic waves through the formation; measuring circuitry for measuring an effect of the formation on the propagating waves; control circuitry arranged to vary the propagating waves as a function of at least one of frequency, spacing and polarization; and processing circuitry arranged to combine the effects of the propagating waves that are varied according to frequency, spacing and polarization for determining the property of the downhole formation.

AN ELECTROMAGNETIC LOGGING APPARATUS AND METHOD

An apparatus for investigating a geological formation GF surrounding a borehole WB, comprises a logging tool TL moveable through the borehole, an electromagnetic probe 1 comprising a pad 2 mounted on the logging tool, adapted for engagement with the borehole by a wall-engaging face of the pad, at least one transmitting antenna T X A, T X B mounted in the wall-engaging face, and a plurality of spaced receiving antennas R X A, R X B mounted in the wall-engaging face spaced in relation to the transmitting antenna T X A, T X B. At least one of the antennas R X A, R X B, T X A, T X B is an open-ended antenna forming a substantially pure electric dipole normal to the pad face.

USE OF A BACTERIUM ISOLATED FROM THE GENUS PSEUDOALTEROMONAS, CYCLOLIPOPEPTIDES AND USES THEREOF

La présente invention concerne une bactérie isolée du genre Pseudoalteromonas pour son utilisation en tant que probiotique, l'utilisation de ladite souche en tant qu'agent conservateur, des cyclolipopeptides susceptibles d'être obtenus à partir de cette bactérie, une composition comprenant au moins un tel cyclolipopeptide, ainsi que leurs utilisations.

ENERGY RADIATION GENERATOR WITH BI-POLAR VOLTAGE LADDER

A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

AN ANTENNA OF AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS

An antenna 3 of an electromagnetic probe used in investigation of geologi cal formations GF surrounding a borehole WBH comprises a conductive base 31 and an antenna element 32. The conductive base 31 comprises an opened non-re sonant cavity 33. The antenna element 32 is embedded in the cavity 33 and go es right through the cavity. The antenna element 32 is isolated from the con ductive base 31. The antenna element 32 is coupled to at least one electroni c module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define either a substantially pure mag netic dipole, or a substantially pure electric dipole.

X-RAY DOWNHOLE TOOL WITH AT LEAST TWO TARGETS AND AT LEAST ONE MEASUREMENT DETECTOR

The current disclosure is related to a downhole tool that comprises an electronic photon generator and at least one detector. The electronic photon generator comprises a cathode configured to emit electrons, a first target configured to generate photons when struck by the electrons, a second target configured to generate photons when struck by the electrons, and a beam steering device that directs the electrons to a first or second target. The at least one detector is configured to detect at least some of the photons emitted by the first target and at least some of the photons emitted by the second target. 1. A downhole tool , comprising: a cathode configured to emit electrons;', 'a first target configured to generate photons when struck by the electrons;', 'a second target configured to generate photons when struck by the electrons;', 'a beam steering device to direct the electrons to a first or second target; and, 'an electronic photon generator comprisingat least one detector configured to detect at least some of the photons emitted by the first target and at least some of the photons emitted by the second target.2. The downhole tool of claim 1 , wherein:the downhole tool is configured to direct the photons emitted by the first target out of the downhole tool at a first location and into materials outside of the downhole tool;the downhole tool is configured to direct the photons emitted by the second target out of the downhole tool at a second location and into the materials outside of the downhole tool; andthe first location is closer to the detector than the second location, thereby enabling the detector to achieve measurements of a first DOI based on photons emitted by the first target and measurements of a second DOI based on photons emitted by the second target.3. The downhole tool of claim 1 , wherein:the downhole tool is configured to direct the photons emitted by the first target out of the downhole tool at a first location and into materials outside of ...

Turbine ring assembly with axial retention

A turbine ring assembly including both a plurality of ring sectors together forming a turbine ring and also a ring support structure including an upstream annular flange and a downstream annular flange, each ring sector having a first horizontal sealing tongue, an upstream vertical sealing tongue, and a first downstream vertical sealing tongue. Each ring sector also includes a second horizontal sealing tongue over the first horizontal sealing tongue in the radial direction of the ring. A first angled sealing element is housed both in a vertical groove present in the upstream tab and in a second horizontal groove, and a second angled sealing element is received both in a first horizontal groove and in a first vertical groove present in the downstream tab.

Sourceless downhole x-ray tool

Systems, methods, and devices relating to a sourceless X-ray downhole tool are provided. By way of example, such a downhole tool may include an X-ray generator, an X-ray detector, and data processing circuitry. The X-ray generator may emit some X-rays out of the downhole tool and some X-rays internally through the downhole tool. The X-ray detector may detect some of the X-rays that return to the downhole tool, as well as some of the X-rays that pass internally through the downhole tool. The data processing circuitry may gain-stabilize the X-ray detector based at least in part on the X-rays that passed internally through the downhole tool and were detected by the X-ray detector.

AN ANTENNA OF AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS

An antenna (3) of an electromagnetic probe used in investigation of geolo gical formations GF surrounding a borehole WBH comprises a conductive base ( 31) and an antenna element (32). The conductive base (31) comprises an opene d non-resonant cavity (33). The antenna element (32) is embedded in the cavi ty (33) and goes right through the cavity. The antenna element (32) is isola ted from the conductive base (31). The antenna element (32) is coupled to at least one electronic module via a first 34A and a second 34B port, respecti vely. The electronic module operates the antenna so as to define a simultane ously superposed pure magnetic dipole and pure electric dipole.

High Voltage Insulating Sleeve For Nuclear Well Logging

A well logging instrument includes an instrument housing to traverse a wellbore penetrating subsurface formations. An electrically operated energy source that emits ionizing radiation is disposed inside the housing. An insulating sleeve is disposed between the energy source and an interior wall of the housing. The insulating sleeve comprises a thin dielectric film arranged in a plurality of tightly fitting layers of dielectric material disposed adjacent to each other and successively. A thickness of each layer and a number of layers is selected to provide a dielectric strength sufficient to electrically insulate the energy source from the housing and to provide a selected resistance to dielectric failure resulting from the ionizing radiation. 1. A well logging instrument , comprising:an instrument housing to traverse a wellbore penetrating subsurface formations;an electrically operated energy source that emits ionizing radiation disposed inside the housing;an insulating sleeve disposed between the energy source and an interior wall of the housing, the insulating sleeve comprising a plurality of layers of dielectric material disposed onto each other successively, a thickness of each layer and a number of layers selected to provide a dielectric strength sufficient to electrically insulate the energy source from the housing and to provide a selected resistance to dielectric failure resulting from the ionizing radiation.2. The well logging instrument of wherein the insulating sleeve further comprises a mandrel disposed in an interior of the plurality of layers claim 1 , the mandrel made from a dielectric material.3. The well logging instrument of wherein the mandrel is made from the same dielectric material as the layers.4. The well logging instrument of wherein the insulating sleeve comprises a heat shrinkable claim 1 , electrically insulating tubing on an exterior of the plurality of layers.5. The well logging instrument of further comprising an electrically ...

SCINTILLATOR BASED RADIATION DETECTION

Methods and related systems are described for the detection of nuclear radiation. The system can include a tool body adapted to be deployed in a wellbore and a scintillator material that intrinsically generates radiation. The scintillator material is mounted within the tool body. A photodetection system is coupled to the scintillator material, and mounted within the tool body. Features in a spectrum associated with a scintillation material's intrinsic radioactive decay are used for the determination of one or more parameter's of the response function of the radiation detector system.

HIGH-VOLTAGE PROTECTION AND SHIELDING WITHIN DOWNHOLE TOOLS

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.

AN ANTENNA FOR AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS AND ITS APPLICATIONS

An antenna (3) of an electromagnetic probe (1) used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base (31) and a first antenna element (32). The conductive base (31) comprises an opened non- resonant cavity (33). The first antenna element (32) is embedded in the cavity (33) and goes right trough the cavity. The first antenna element (32) is comprised of a center-split half-coaxial wire so as to define a symmetrized antenna radiation pattern.

A tool for downhole formation evaluation.

An apparatus for determining a property of a downhole formation, the apparatus comprising: an array having a plurality of transmitters and receivers capable of propagating electromagnetic waves through the formation; measuring circuitry for measuring an effect of the formation on the propagating waves; control circuitry arranged to vary the propagating waves as a function of at least one of frequency, spacing and polarization; and processing circuitry arranged to combine the effects of the propagating waves that are varied according to frequency, spacing and polarization for determining the property of the downhole formation.

SCINTILLATOR BASED RADIATION DETECTION

Methods and related systems are described for the detection of nuclear radiation. The system can include a tool body adapted to be deployed in a wellbore and a scintillator material that intrinsically generates radiation. The scintillator material is mounted within the tool body. A photodetection system is coupled to the scintillator material, and mounted within the tool body. Features in a spectrum associated with a scintillation material's intrinsic radioactive decay are used for the determination of one or more parameter's of the response function of the radiation detector system.

An electromagnetic probe

CONTROL OF ELECTRICALLY OPERATED RADIATION GENERATORS

The present disclosure describes a downhole tool including an electrically operated radiation generator that selectively output radiation to a surrounding environment based at least in part on supply of electrical power; and a control system that determines likelihood of exposing living beings in the surrounding environment to output radiation by determining whether one or more check conditions is met; determine that each of the one or more check conditions is met before instructing the electrically operated radiation generator to output radiation; and instruct the electrically operated radiation generator to cease output of radiation when at least one of the one or more check conditions is no longer met. 1. A downhole tool , comprising:an electrically operated radiation generator configured to selectively output radiation to a surrounding environment based at least in part on supply of electrical power; and determine likelihood of exposing living beings in the surrounding environment to output radiation by determining whether one or more check conditions is met;', 'instruct the electrically operated radiation generator to output radiation after each of the one or more check conditions is met; and', 'instruct the electrically operated radiation generator to cease output of radiation when at least one of the one or more check conditions is no longer met., 'a control system configured to2. The downhole tool of claim 1 , wherein the control system comprises a downhole control system located in the downhole tool claim 1 , wherein the downhole control system is configured to:determine whether a start time condition is met based at least in part on whether a first clock value is greater than a start time parameter received from a surface control system;determine whether a stop time condition is met based at least in part on whether a second clock value is less than a stop time parameter received from the surface control system;determine whether an operating duration ...

USE OF A BACTERIUM ISOLATED FROM THE GENUS PSEUDOALTEROMONAS, CYCLOLIPOPEPTIDES AND USES THEREOF

The present invention relates to an isolated bacterium from the genus for its use as a probiotic, the use of said strain as a preservative, cyclolipopeptides which may be obtained from this bacterium, a composition comprising at least such a cyclolipopeptide, as well as to their uses. 2. A method for treating fish claim 1 , shellfish claim 1 , crustaceans claim 1 , abalones claim 1 , oysters or further algae claim 1 , which comprises the administration of an effective amount of the isolated bacterium according to .4Pseudoalteromonas. The method according to claim 1 , wherein the isolated bacterium is hCg-6 claim 1 , a strain deposited according to the Budapest Treaty claim 1 , on May 22 claim 1 , 2013 claim 1 , at the Collection Nationale de Culture de Microorganismes (CNCM claim 1 , Paris claim 1 , France) under the number I-4753.6. The cyclolipopeptide according to claim 5 , wherein R is selected from the group consisting ofalkyl groups comprising between 6 and 14 carbon atoms, except nonyl and undecyl groups;alkylene groups comprising between 6 and 14 carbon atoms, except undec-4-ylene and tridec-6-ylene groups;alkyl groups substituted with an —OH group and comprising between 6 and 14 carbon atoms; andalkylene groups substituted with an —OH groups and comprising between 6 and 14 carbon atoms.7. The cyclolipopeptide according to claim 5 , wherein R is selected from the group consisting of nonylene claim 5 , in particular nonyl-2-ene claim 5 , nonanol claim 5 , in particular nonan-2-ol claim 5 , heptyl claim 5 , octylene claim 5 , octyl claim 5 , decyldiene claim 5 , decanyl claim 5 , decanol claim 5 , decylene claim 5 , octenol claim 5 , dodecylene and tridecyltriene.8Pseudoalteromonas. The cyclolipopeptide according to claim 5 , which may be obtained from the bacterium hCg-6.9Pseudoalteromonas. A method for producing a cyclolipopeptide as defined according to claim 5 , comprising a step for cultivation of the bacterium hCg-6 under conditions allowing production ...

GAIN STABILIZATION OF GAMMA-RAY SCINTILLATION DETECTOR

Systems and methods for stabilizing the gain of a gamma-ray spectroscopy system are provided. In accordance with one embodiment, a method of stabilizing the gain of a gamma-ray spectroscopy system may include generating light corresponding to gamma-rays detected from a geological formation using a scintillator having a natural radioactivity, generating an electrical signal corresponding to the light, and stabilizing the gain of the electrical signal based on the natural radioactivity of the scintillator. The scintillator may contain, for example, naturally radioactive elements such as Lutetium or Lanthanum.

ENERGY RADIATION GENERATOR WITH UNI-POLAR VOLTAGE LADDER

A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

USE OF A BACTERIUM ISOLATED FROM THE GENUS PSEUDOALTEROMONAS, CYCLOLIPOPEPTIDES AND USES THEREOF

La présente invention concerne une bactérie isolée du genre Pseudoalteromonas pour son utilisation en tant que probiotique, l'utilisation de ladite souche en tant qu'agent conservateur, des cyclolipopeptides susceptibles d'être obtenus à partir de cette bactérie, une composition comprenant au moins un tel cyclolipopeptide, ainsi que leurs utilisations.

LOGGING-WHILE-DRILLING TOOL INCORPORATING ELECTRONIC RADIATION GENERATOR AND METHOD OF USING SAME

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation. 1. A logging-while-drilling tool comprising:a circumferential drill collar having a space in the drill collar; anda pressure housing disposed in the space, wherein the pressure housing includes an electronic X-ray generator configured to emit X-rays out of the logging-while-drilling tool and into a subterranean formation and an X-ray detector configured to detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation.2. The logging-while-drilling tool of claim 1 , wherein the space is drilled in the drill collar.3. The logging-while-drilling tool of claim 1 , wherein the space is disposed in the drill collar at a non-zero angle to an axis of the logging-while-drilling tool.4. The logging-while-drilling tool of claim 1 , wherein the space is disposed in the drill collar substantially in parallel to an axis of the logging-while-drilling tool.5. The logging-while-drilling tool of claim 1 , further comprising an X-ray monitor configured to monitor the X-rays emitted by the electronic X-ray generator.6. The logging-while-drilling tool of claim 1 , further comprising a plurality of X-ray detectors configured to detect X-rays that return to the logging-while-drilling tool after scattering in the ...

Electromagnetic Probe

A probe for measuring electromagnetic properties of a subsurface formation includes a pad having a face adapted for engagement with a borehole wall, a pair of transmitting antennas, and two pairs of receiving antennas. The transmitting antennas and receiving antennas are mounted in the face of the pad, and each of the two pairs of receiving antennas include a first and second antenna distributed on opposite sides of the pair of transmitting antennas. The probe further includes an electronic arrangement having a transmitter module and a receiver module. The transmitter module is arranged to operate the pair of transmitting antennas in either a broadside mode or an endfire mode by applying an excitation signal modulated by two or more frequencies, and the receiver module is arranged to determine an attenuation and a phase shift of each reception signal provided by each receiving antenna relatively to the excitation signal.

AN ANTENNA OF AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS

An antenna (3) of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base (31) and an antenna element (32). The conductive base (31) comprises an opened non-resonant cavity (33). The antenna element (32) is embedded in the cavity (33) and goes right through the cavity. The antenna element (32) is isolated from the conductive base (31). The antenna element (32) is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define a simultaneously superposed pure magnetic dipole and pure electric dipole.

AN ANTENNA OF AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS

An antenna 3 of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base 31 and an antenna element 32. The conductive base 31 comprises an opened non-resonant cavity 33. The antenna element 32 is embedded in the cavity 33 and goes right through the cavity. The antenna element 32 is isolated from the conductive base 31. The antenna element 32 is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole.

Scintillator based radiation detection

Methods and related systems are described for the detection of nuclear radiation. The system can include a tool body adapted to be deployed in a wellbore and a scintillator material that intrinsically generates radiation. The scintillator material is mounted within the tool body. A photodetection system is coupled to the scintillator material, and mounted within the tool body. Features in a spectrum associated with a scintillation material's intrinsic radioactive decay are used for the determination of one or more parameter's of the response function of the radiation detector system.

Antenna of an electromagnetic probe for investigating geological formations

An antenna 3 of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base 31 and an antenna element 32. The conductive base 31 comprises an opened non-resonant cavity 33. The antenna element 32 is embedded in the cavity 33 and goes right through the cavity. The antenna element 32 is isolated from the conductive base 31. The antenna element 32 is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole.

Use of a bacterium isolated from the genus pseudoalteromonas, cyclolipopeptides and uses thereof

The invention relates to a bacterium isolated from the genus ...

Tool for downhole formation evaluation

An apparatus for determining a property of a downhole formation, the apparatus comprising: an array having a plurality of transmitters and receivers capable of propagating electromagnetic waves through the formation; measuring circuitry for measuring an effect of the formation on the propagating waves; control circuitry arranged to vary the propagating waves as a function of at least one of frequency, spacing and polarization; and processing circuitry arranged to combine the effects of the propagating waves that are varied according to frequency, spacing and polarization for determining the property of the downhole formation.

Energy Radiation Generator With Uni-Polar Voltage Ladder

A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing. 1. A well-logging tool comprising:a sonde housing; a generator housing,', 'a target carried by said generator housing,', 'a charged particle source carried by said generator housing to direct charged particles at said target, and', a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and', 'at least one loading coil coupled at at least one intermediate position along said voltage ladder; and, 'at least one voltage source coupled to said charged particle source, said at least one voltage source comprising'}], 'a radiation generator carried by said sonde housing and comprising'}at least one radiation detector carried by said sonde housing.2. The well-logging tool of wherein said at least one loading coil comprises a plurality thereof spaced apart at respective intermediate positions along said voltage ladder.3. The well-logging tool of wherein one of said loading coils is coupled at an intermediate position defined by two-fifths N claim 2 , where N is a number of said voltage multiplication stages.4. The well-logging tool of wherein one of said loading coils is coupled at an intermediate position defined by four-fifths N claim 2 , where N is a number of said voltage multiplication ...

Use of a bacterium isolated from the genus Pseudoalteromonas, cyclolipopeptides and uses thereof

The present invention relates to an isolated bacterium from the genus Pseudoalteromonas for its use as a probiotic, the use of said strain as a preservative, cyclolipopeptides which may be obtained from this bacterium, a composition comprising at least such a cyclolipopeptide, as well as to their uses.

Logging-while-drilling tool incorporating electronic radiation generator and method for using same

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

An electromagnetic logging apparatus and method

An apparatus for investigating a geological formation GF surrounding a borehole WB, comprises a logging tool TL moveable through the borehole, an electromagnetic probe 1 comprising a pad 2 mounted on the logging tool, adapted for engagement with the borehole by a wall-engaging face of the pad, at least one transmitting antenna T X A, T X B mounted in the wall-engaging face, and a plurality of spaced receiving antennas R X A, R X B mounted in the wall-engaging face spaced in relation to the transmitting antenna T X A, T X B. At least one of the antennas R X A, R X B, T X A, T X B is an open-ended antenna forming a substantially pure electric dipole normal to the pad face.

An antenna for an electromagnetic probe for investigating geological formations and its applications

An antenna 3 of an electromagnetic probe 1 used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base 31 and a first antenna element 32. The conductive base 31 comprises an opened non-resonant cavity 33. The first antenna element 32 is embedded in the cavity 33 and goes right trough the cavity. The first antenna element 32 is comprised of a center-split half-coaxial wire so as to define a symmetrized antenna radiation pattern.

Electromagnetic logging apparatus and method

An apparatus for investigating a geological formation surrounding a borehole including a logging tool moveable through the borehole, an electromagnetic probe 1 including a pad 2 mounted on the logging tool for engagement with the borehole by a wall-engaging face of the pad, at least one transmitting antenna TxA, TxB mounted in the wall-engaging face, and a plurality of spaced receiving antennas RxA, RxB mounted in the wall-engaging face spaced in relation to the transmitting antenna TxA, TxB. At least one of the antennas RxA, RxB, TxA, TxB is an open-ended antenna forming a substantially pure electric dipole normal to the pad face and wherein the first transmitting antenna of the at least one pair of transmitting antennas is positioned above the plurality of spaced receiving antennas and the second transmitting antenna of the at least one pair of transmitting antennas is positioned below the plurality of spaced receiving antennas.

Radiation generator with field shaping electrode

A radiation generator may include an elongate generator housing having a proximal end and a distal end, a target electrode within the housing at the distal end thereof, a charged particle source within the housing at the proximal end thereof to direct charged particles at the target based upon a first biasing potential, and a field shaping electrode within the housing and adjacent the source to shape a field within the housing. At least one accelerator electrode may be within the housing on an opposite side of the field shaping electrode from the source to accelerate charged particles from the source to the target based upon a second biasing potential different than the first biasing potential. The field shaping electrode may be electrically floating so that the charged particles are directed from the source to the target without applying a biasing potential to the field shaping electrode.

Antenna of an electromagnetic probe for investigating geological formations

An antenna 3 of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base 31 and an antenna element 32. The conductive base 31 comprises an opened non-resonant cavity 33. The antenna element 32 is embedded in the cavity 33 and goes right through the cavity. The antenna element 32 is isolated from the conductive base 31. The antenna element 32 is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole.

ELECTROMAGNETIC LOGGING APPARATUS AND METHOD

An apparatus for investigating a geological formation GF surrounding a borehole WB, comprises a logging tool TL moveable through the borehole, an electromagnetic probe 1 comprising a pad 2 mounted on the logging tool, adapted for engagement with the borehole by a wall-engaging face of the pad, at least one transmitting antenna TxA, TxB mounted in the wall-engaging face, and a plurality of spaced receiving antennas RxA, RxB mounted in the wall-engaging face spaced in relation to the transmitting antenna TxA, TxB. At least one of the antennas RxA, RxB, TxA, TxB is an open-ended antenna forming a substantially pure electric dipole normal to the pad face.

Antenna of an electromagnetic probe for investigating geological formations

An antenna (3) of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base (31) and an antenna element (32). The conductive base (31) comprises an opened non-resonant cavity (33). The antenna element (32) is embedded in the cavity (33) and goes right through the cavity. The antenna element (32) is isolated from the conductive base (31). The antenna element (32) is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define a simultaneously superposed pure magnetic dipole and pure electric dipole.

Gain stabilization of gamma-ray scintillation detector

Systems and methods for stabilizing the gain of a gamma-ray spectroscopy system are provided. In accordance with one embodiment, a method of stabilizing the gain of a gamma-ray spectroscopy system may include generating light corresponding to gamma-rays detected from a geological formation using a scintillator having a natural radioactivity, generating an electrical signal corresponding to the light, and stabilizing the gain of the electrical signal based on the natural radioactivity of the scintillator. The scintillator may contain, for example, naturally radioactive elements such as Lutetium or Lanthanum.

Turbine wheel for a turbine engine

A rotating assembly for a turbine engine, comprising a disc having an outer periphery having alternating slots and teeth, blades radially extending from the disc and roots of which are axially engaged in the slots, with spaces called slot cavities being provided between the roots of the blades and the slots, platforms laterally extending from the blades and circumferentially arranged end-to-end, so as to form spaces called inter-blade cavities, and a downstream annular shroud, comprising an outer annular sealing lip opposite the downstream ends of the platforms. The downstream shroud further comprises an intermediate annular sealing lip opposite the downstream faces of the teeth of the disc, radially between the slot cavities and the inter-blade cavities.

Energy radiation generator with uni-polar voltage ladder

A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

High-voltage protection and shielding within downhole tools

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.

Logging-while-drilling tool incorporating electronic radiation generator and method for using same

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

X-RAY GENERATOR OUTPUT REGULATION

The techniques and device provided herein relate to regulating a source generator in an X-ray based equipment. In particular, an X-ray system is provided that comprises an X-ray generator and a reference detector system that regulates the output of the X-ray generator. The reference detector system comprises a direct channel that allows at least a portion of the photons to directly reach the detector crystal and a plurality of fluorescent channels, such that photon flux entering the reference detector from the fluorescent channels is negligibly impacted by variations of beam spots, shapes and/or positions. 1. A downhole tool , comprising: 'a generator that produces a source stream of electrons and accelerates them to a beam spot on a target to generate photons;', 'an X-ray system, comprising a photomultiplier tube (PMT) configured to detect and provide an amount and energy of the source stream of photons that reach it;', 'a detector crystal configured to interact with photons and produce scintillation light before they reach the PMT;', 'a direct channel configured to allow at least a portion of the stream of photons to directly reach the detector crystal;', 'a filter configured to reduce a low energy part of a resultant spectrum of the PMT;', 'a plurality of fluorescent channels positioned substantially symmetrically, such that photon flux entering the reference detector from the fluorescent channels is negligibly impacted by variations of the beam spot., 'a reference detector system, comprising2. The downhole tool of claim 1 , wherein the plurality of fluorescent channels consist of two fluorescent channels.3. The downhole tool of claim 1 , wherein the filter is disposed within the direct channel.4. The downhole tool of claim 1 , comprising an internal shield configured to restrict X-rays reflected from a formation or borehole from reaching the reference detector system.5. The downhole tool of claim 4 , wherein the plurality of fluorescent channels are disposed in ...

Input voltage modulator for radiation generator

A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled to the charged particle source, and an input voltage modulator coupled to the voltage ladder and supplying an amplitude modulated signal thereto. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

An antenna of an electromagnetic probe for investigating geological formations

An antenna (3) of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base (31) and an antenna element (32). The conductive base (31) comprises an opened non-resonant cavity (33). The antenna element (32) is embedded in the cavity (33) and goes right through the cavity. The antenna element (32) is isolated from the conductivebase (31). The antenna element (32) is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define a simultaneously superposed pure magnetic dipole and pure electric dipole.

Probe for measuring the electromagnetic properties of a down-hole material

A probe 1 for measuring the electromagnetic properties of a down-hole material MC, GF, DM of a well-bore WB comprises a metallic pad 2 in contact with the down-hole material. The pad 2 further comprises an open-ended coaxial wire 4 coupled to an electronic circuit 3 . The open-ended coaxial wire 4 comprises an inner conductor 4 A sunk in an insulator 4 B and is positioned sensibly perpendicularly to the well-bore wall. The electronic circuit 3 is able to send a high-frequency input signal into the open-ended coaxial wire 4 and to determine a reflection coefficient based on a high-frequency output signal reflected by the open-ended coaxial wire 4.

X-ray generator output regulation

The techniques and device provided herein relate to regulating a source generator in an X-ray based equipment. In particular, an X-ray system is provided that comprises an X-ray generator and a reference detector system that regulates the output of the X-ray generator. The reference detector system comprises a direct channel that allows at least a portion of the photons to directly reach the detector crystal and a plurality of fluorescent channels, such that photon flux entering the reference detector from the fluorescent channels is negligibly impacted by variations of beam spots, shapes and/or positions.

High voltage insulating sleeve for nuclear well logging

A well logging instrument includes an instrument housing to traverse a wellbore penetrating subsurface formations. An electrically operated energy source that emits ionizing radiation is disposed inside the housing. An insulating sleeve is disposed between the energy source and an interior wall of the housing. The insulating sleeve comprises a thin dielectric film arranged in a plurality of tightly fitting layers of dielectric material disposed adjacent to each other and successively. A thickness of each layer and a number of layers is selected to provide a dielectric strength sufficient to electrically insulate the energy source from the housing and to provide a selected resistance to dielectric failure resulting from the ionizing radiation.

Energy Radiation Generator With Bi-Polar Voltage Ladder

A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing. 1. A well-logging tool comprising:a sonde housing; a generator housing,', 'a target carried by said generator housing,', 'a charged particle source carried by said generator housing to direct charged particles at said target, and', a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and', 'at least one loading coil coupled at at least one intermediate position along said voltage ladder; and, 'at least one voltage source coupled to said charged particle source, said at least one voltage source comprising'}], 'a radiation generator carried by said sonde housing and comprising'}at least one radiation detector carried by said sonde housing.2. The well-logging tool of wherein said voltage multiplication stages are arranged in a positive voltage branch and a negative voltage branch; and wherein said at least one loading coil comprises a respective loading coil coupled at respective intermediate positions along each of said positive voltage branch and said negative voltage branch.3. The well-logging tool of at least one of the intermediate positions is defined by one-third N claim 2 , where N is a number of said voltage multiplication stages.4. The well-logging tool of wherein each of said ...

Energy radiation generator with bi-polar voltage ladder

A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

GAIN STABILIZATION OF GAMMA-RAY SCINTILLATION DETECTOR

Systems and methods for stabilizing the gain of a gamma-ray spectroscopy system are provided. In accordance with one embodiment, a method of stabilizing the gain of a gamma-ray spectroscopy system may include generating light corresponding to gamma-rays detected from a geological formation using a scintillator having a natural radioactivity, generating an electrical signal corresponding to the light, and stabilizing the gain of the electrical signal based on the natural radioactivity of the scintillator. The scintillator may contain, for example, naturally radioactive elements such as Lutetium or Lanthanum.

Use of a bacterium isolated from the genus Pseudoalteromonas, cyclolipopeptides and uses thereof

The present invention relates to an isolated bacterium from the genus Pseudoalteromonas for its use as a probiotic, the use of said strain as a preservative, cyclolipopeptides which may be obtained from this bacterium, a composition comprising at least such a cyclolipopeptide, as well as to their uses.

X-ray downhole tool with at least two targets and at least one measurement detector

The current disclosure is related to a downhole tool that comprises an electronic photon generator and at least one detector. The electronic photon generator comprises a cathode configured to emit electrons, a first target configured to generate photons when struck by the electrons, a second target configured to generate photons when struck by the electrons, and a beam steering device that directs the electrons to a first or second target. The at least one detector is configured to detect at least some of the photons emitted by the first target and at least some of the photons emitted by the second target.

SCINTILLATOR BASED RADIATION DETECTION

Methods and related systems are described for the detection of nuclear radiation. The system can include a tool body adapted to be deployed in a wellbore and a scintillator material that intrinsically generates radiation. The scintillator material is mounted within the tool body. A photodetection system is coupled to the scintillator material, and mounted within the tool body. Features in a spectrum associated with a scintillation material's intrinsic radioactive decay are used for the determination of one or more parameter's of the response function of the radiation detector system.

Energy radiation generator with uni-polar voltage ladder

A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

Control of electrically operated radiation generators

The present disclosure describes a downhole tool including an electrically operated radiation generator that selectively output radiation to a surrounding environment based at least in part on supply of electrical power; and a control system that determines likelihood of exposing living beings in the surrounding environment to output radiation by determining whether one or more check conditions is met; determine that each of the one or more check conditions is met before instructing the electrically operated radiation generator to output radiation; and instruct the electrically operated radiation generator to cease output of radiation when at least one of the one or more check conditions is no longer met.

Method and apparatus for operating a downhole tool with an electronic photon source at different endpoint energies

A system is disclosed for downhole logging. The system comprises a photon source configured to generate photons at different endpoint energies; at least one radiation detector configured to detect photons after interactions with a wellbore, a geological formation surrounding the wellbore, or both; an energy detection system configured to determine an endpoint energy of the photon source; and a processing system configured to determine properties of a wellbore, a geological formation, or both, based on photons detected at the at least one radiation detector and the endpoint energy determined by the energy detection system.

Logging-While-Drilling Tool Incorporating Electronic Radiation Generator And Method For Using Same

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

Energy radiation generator with bi-polar voltage ladder

A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

Logging-While-Drilling Tool Incorporating Electronic Radiation Generator and Method for Using Same

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

TURBINE RING ASSEMBLY WITH AXIAL RETENTION

A turbine ring assembly including both a plurality of ring sectors together forming a turbine ring and also a ring support structure including an upstream annular flange and a downstream annular flange, each ring sector having a first horizontal sealing tongue, an upstream vertical sealing tongue, and a first downstream vertical sealing tongue. Each ring sector also includes a second horizontal sealing tongue over the first horizontal sealing tongue in the radial direction of the ring. A first angled sealing element is housed both in a vertical groove present in the upstream tab and in a second horizontal groove, and a second angled sealing element is received both in a first horizontal groove and in a first vertical groove present in the downstream tab.

Sourceless downhole X-ray tool

Systems, methods, and devices relating to a sourceless X-ray downhole tool are provided. By way of example, such a downhole tool may include an X-ray generator, an X-ray detector, and data processing circuitry. The X-ray generator may emit some X-rays out of the downhole tool and some X-rays internally through the downhole tool. The X-ray detector may detect some of the X-rays that return to the downhole tool, as well as some of the X-rays that pass internally through the downhole tool. The data processing circuitry may gain-stabilize the X-ray detector based at least in part on the X-rays that passed internally through the downhole tool and were detected by the X-ray detector.

Electromagnetic probe for measuring properties of a subsurface formation

A probe for measuring electromagnetic properties of a subsurface formation includes a pad having a face adapted for engagement with a borehole wall, a pair of transmitting antennas, and two pairs of receiving antennas. The transmitting antennas and receiving antennas are mounted in the face of the pad, and each of the two pairs of receiving antennas include a first and second antenna distributed on opposite sides of the pair of transmitting antennas. The probe further includes an electronic arrangement having a transmitter module and a receiver module. The transmitter module is arranged to operate the pair of transmitting antennas in either a broadside mode or an endfire mode by applying an excitation signal modulated by two or more frequencies, and the receiver module is arranged to determine an attenuation and a phase shift of each reception signal provided by each receiving antenna relatively to the excitation signal.

ANTENNA OF AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS

An antenna (3) of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base (31) and an antenna element (32). The conductive base (31) comprises an opened non-resonant cavity (33). The antenna element (32) is embedded in the cavity (33) and goes right through the cavity. The antenna element (32) is isolated from the conductive base (31). The antenna element (32) is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define a simultaneously superposed pure magnetic dipole and pure electric dipole.

Radiation generator adjusting beam focusing based upon a diagnostic electrode

A radiation generator is provided that includes a target, a cathode to emit electrons in a downstream direction toward the target, a first conductive member downstream of the cathode, and a second conductive member downstream of the cathode. The first and second conductive members have a potential difference with the cathode such that a resultant electric field accelerates the electrons toward the target. A diagnostic current in the second conductive member and a target current in the target may be measured, and an electrical property of the first conductive member may be adjusted based upon the diagnostic current and the target current.

HIGH-VOLTAGE PROTECTION AND SHIELDING WITHIN DOWNHOLE TOOLS

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing. 1. A downhole tool comprising:a housing;a voltage multiplier within the housing and configured to transform input power to the downhole tool from a first voltage to a second voltage, wherein the second voltage is greater than the first voltage;at least one shielding ring surrounding at least the voltage multiplier and configured to reduce electric field stresses within the downhole tool; andan insulator located between the plurality of shielding rings and the housing.2. The downhole tool of claim 1 , wherein the voltage multiplier comprises a plurality of multiplier stages claim 1 , wherein the at least one shielding ring surrounds the plurality of multiplier stages.3. The downhole tool of claim 1 , wherein the at least one shielding ring comprises a metallic conductive material.4. The downhole tool of claim 1 , wherein the at least one shielding ring comprises a semiconductor material.5. The downhole tool of claim 1 , wherein the insulator comprises perfluoroalkoxy (PFA) film wrapped around an exterior circumference of the at least one shielding ring.6. The downhole tool of claim 1 , wherein the housing is maintained at a relative ground potential.7. The downhole tool of claim 1 , wherein the housing is sealed claim 1 , and wherein an interior of the housing comprises compressed sulfur hexafluoride (SF6) gas proximate the voltage multiplier.8. The downhole tool of claim 1 , wherein the at least one shielding ring comprises at least one partial ring comprising an arc angle greater than 180 degrees ...

PROCESS TO PREPARE A HYDROGEN RICH GAS MIXTURE

The invention is directed to a process to prepare a hydrogen rich gas mixture from a solid sulphur- and halogen-containing carbonaceous feedstock. The process involves the following steps. Step (a): gasification of the solid carbonaceous feedstock with an oxygen-containing gas to obtain a gas mixture comprising halogen compounds, sulphur compounds, hydrogen and at least 50 vol. % carbon monoxide, on a dry basis. Step (b): contacting the gas mixture with a quench gas or quench liquid to reduce the temperature of the gas mixture to below 900° C. Step (c) contacting the gas mixture with water having a temperature of between 150 and 250° C. to obtain a gas mixture comprising between 50 and 1000 ppm halogen and having a steam to carbon monoxide molar ratio of between 0.2:1 and 0.9:1. Step (d): subjecting the gas mixture obtained in step (c) to a water gas shift reaction wherein part or all of the carbon monoxide is converted with the steam to hydrogen and carbon dioxide in the presence of a catalyst as present in one fixed bed reactor or in a series of more than one fixed bed reactors and wherein the temperature of the gas mixture as it enters the reactor or reactors is between 190 and 230° C. Step (e): carbon dioxide and sulphur compounds are separated from the shifted gas mixture obtained in step (d) by contacting the shifted gas mixture with a solvent comprising dialkyl ethers of polyethylene glycol. 1. A process to prepare a hydrogen rich gas mixture from a solid sulphur- and halogen-containing carbonaceous feedstock by(a) gasification of the solid carbonaceous feedstock with an oxygen-containing gas in an entrained flow gasifier provided with one or more burners, wherein the carbonaceous feedstock is provided to said burner(s) as a mixture of the solid carbonaceous feedstock and a gaseous carrier gas to obtain a gas mixture comprising halogen compounds, sulphur compounds, hydrogen and at least 50 vol. % carbon monoxide, on a dry basis,(b) contacting the gas mixture ...

PROCESS FOR PREPARING A PARAFFIN PRODUCT

The invention is a process for preparing a paraffin product from a carbonaceous feedstock comprising (a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide, (b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the Fischer-Tropsch reaction and a paraffin product, (c) hydrogenating at least a part of the off-gas from the Fischer-Tropsch reaction using a steam/off-gas mol ratio in the range of between 0.7 and 1.5 and a catalyst comprising copper and zinc and/or a catalyst comprising copper and manganese, and (d) preparing a hydrogen comprising gas from at least a part of the off-gas from the Fischer-Tropsch reaction. 1. A process for preparing a paraffin product from a carbonaceous feedstock comprising the following steps ,(a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide,(b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the Fischer-Tropsch reaction and a paraffin product,(c) hydrogenating at least a part of the off-gas from the Fischer-Tropsch reaction using a steam/off-gas mol ratio in the range of between 0.7 and 1.5 and a catalyst comprising copper and zinc and/or a catalyst comprising copper and manganese, and(d) preparing a hydrogen comprising gas from at least a part of the off-gas from the Fischer-Tropsch reaction.2. The process according to claim 1 , wherein the steam/off-gas mol ratio is in the range of between 0.8 and 1.2.3. The process as claimed in claim 1 , wherein hydrogenation step (c) is performed at a temperature in the range of between 200 and 300° C. claim 1 , preferably between 220 and 270° C.4. The process as claimed in claim 1 , wherein hydrogenation step (c) is performed using two or more reactors comprising a copper comprising catalyst.5. The process as claimed in claim 1 , wherein additionally a pre- ...

ANTENNA OF AN ELECTROMAGNETIC PROBE FOR INVESTIGATING GEOLOGICAL FORMATIONS

An antenna of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base and an antenna element . The conductive base comprises an opened non-resonant cavity . The antenna element is embedded in the cavity and goes right through the cavity. The antenna element is isolated from the conductive base . The antenna element is coupled to at least one electronic module via a first A and a second B port, respectively. The electronic module operates the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole. 133132313332333231323434. An antenna () of an electromagnetic probe used in investigation of geological formations (GF) surrounding a borehole (WBH) comprising a conductive base () and an antenna element () , the conductive base () comprising an opened non-resonant cavity () , the antenna element () being embedded in the cavity () and going right through the cavity , the antenna element () being isolated from the conductive base () , the antenna element () being coupled to at least one electronic module via a first (A) and a second (B) port , respectively , the electronic module operating the antenna so as to define either a substantially pure magnetic dipole , or a substantially pure electric dipole.2. An antenna of an electromagnetic probe according to claim 1 , wherein the antenna element is a wire strip.333. An antenna of an electromagnetic probe according to or claim 1 , wherein the cavity () has a parallelepipedic or a cylindrical shape.433. An antenna of an electromagnetic probe according to any one of the to claim 1 , wherein the cavity () is filled with a dielectric material.5414141414141. An antenna of an electromagnetic probe according to any one of the to claim 1 , wherein the electronic module comprises a first electronic module (T claim 1 , R) operating the antenna so as to define a substantially pure magnetic dipole claim 1 , and ...

X-RAY DOWNHOLE TOOL WITH AT LEAST TWO TARGETS AND AT LEAST ONE MEASUREMENT DETECTOR

The current disclosure is related to a downhole tool that comprises an electronic photon generator and at least one detector. The electronic photon generator comprises a cathode configured to emit electrons, a first target configured to generate photons when struck by the electrons, a second target configured to generate photons when struck by the electrons, and a beam steering device that directs the electrons to a first or second target. The at least one detector is configured to detect at least some of the photons emitted by the first target and at least some of the photons emitted by the second target. 1. A downhole tool , comprising: a cathode configured to emit electrons;', 'a first target configured to generate photons when struck by the electrons;', 'a second target configured to generate photons when struck by the electrons;', 'a beam steering device to direct the electrons to a first or second target; and, 'an electronic photon generator comprisingat least one detector configured to detect at least some of the photons emitted by the first target and at least some of the photons emitted by the second target.2. The downhole tool of claim 1 , wherein:the downhole tool is configured to direct the photons emitted by the first target out of the downhole tool at a first location and into materials outside of the downhole tool;the downhole tool is configured to direct the photons emitted by the second target out of the downhole tool at a second location and into the materials outside of the downhole tool; andthe first location is closer to the detector than the second location, thereby enabling the detector to achieve measurements of a first DOI based on photons emitted by the first target and measurements of a second DOI based on photons emitted by the second target.3. The downhole tool of claim 1 , wherein:the downhole tool is configured to direct the photons emitted by the first target out of the downhole tool at a first location and into materials outside of ...

PROCESS FOR PREPARING A PARAFFIN PRODUCT

The invention relates to a process for preparing a paraffin product from a carbonaceous feedstock comprising (a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide, (b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the Fischer-Tropsch reaction and a paraffin product, (c) hydrogenating at least a part of the off-gas from the Fischer-Tropsch reaction using a steam/off-gas mol ratio in the range of between 0.5 and 1.5 and a catalyst comprising copper and zinc, followed by a conversion step (d) using a nickel based catalyst, and (e) preparing a hydrogen comprising gas from at least a part of the off-gas from the Fischer-Tropsch reaction. 18-. (canceled)9. A method for preparing a paraffin product from a carbonaceous feedstock comprising the following steps:(a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide;(b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the Fischer-Tropsch reaction and a paraffin product;(c) subjecting at least a part of the off-gas from the Fischer-Tropsch reaction to hydrogenation using a steam/off-gas mol ratio in the range of between 0.5 and 1.5, and a catalyst comprising copper and zinc;(d) subjecting at least a part of the gas resulting from step (c) to conversion using a nickel based catalyst comprising at most 0.2 wt % cobalt, at most 0.2 wt % iron and at most 0.2 wt % ruthenium, calculated on the total weight of the catalyst; and,(e) preparing a hydrogen comprising gas from at least a part of the gas resulting from step (d) using a reforming process.10. The method of claim 9 , wherein the steam/off-gas mol ratio in step (c) is in the range of between 0.7 and 1.5.11. The method of claim 9 , wherein the steam/off-gas mol ratio in step (c) is in the range of between 0.8 and 1.2.12. The method of claim ...

ENERGY RADIATION GENERATOR WITH BI-POLAR VOLTAGE LADDER

A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing. 1. A well-logging tool comprising:a sonde housing; a generator housing,', 'a target carried by said generator housing,', 'a charged particle source carried by said generator housing to direct charged particles at said target, and', a voltage ladder comprising a plurality of voltage multiplication stages with a voltage rating, and', 'at least one loading coil coupled at at least one intermediate position along said voltage ladder;', 'wherein said at least one voltage source has an operating frequency and a voltage efficiency, wherein said operating frequency is adjusted to optimize the voltage efficiency within the voltage rating of the multiplication stages; and, 'at least one voltage source coupled to said charged particle source, said at least one voltage source comprising'}], 'a radiation generator carried by said sonde housing and comprising'}at least one radiation detector carried by said sonde housing.2. The well-logging tool of wherein said at least one loading coil comprises a plurality thereof spaced apart at respective intermediate positions along said voltage ladder.3. The well-logging tool of wherein one of said loading coils is coupled at an intermediate position defined by two-fifths N claim 2 , where N is a number of said ...

TURBINE WHEEL FOR A TURBINE ENGINE

A rotating assembly for a turbine engine, comprising a disc having an outer periphery having alternating slots and teeth, blades radially extending from the disc and roots of which are axially engaged in the slots, with spaces called slot cavities being provided between the roots of the blades and the slots, platforms laterally extending from the blades and circumferentially arranged end-to-end, so as to form spaces called inter-blade cavities, and a downstream annular shroud, comprising an outer annular sealing lip opposite the downstream ends of the platforms. The downstream shroud further comprises an intermediate annular sealing lip opposite the downstream faces of the teeth of the disc, radially between the slot cavities and the inter-blade cavities. 1. A rotating assembly for a turbine engine comprising:a disc having an outer periphery having alternating slots and teeth, which extend from one upstream face to a downstream face of the disc,blades radially extending from the disc and roots of which are axially engaged into the slots and radially held by the teeth of the disc, with said roots being fir-tree roots, with radially outer and radially inner holding stage in a form-fitting manner with respectively outer and inner faces of the flanks of the teeth of the disc, with outer slot cavities being provided between said outer faces and the outer stage of the blade roots and inner slot cavities being provided between said inner faces and the inner stages of the blade roots, and extending from the upstream face to the downstream face of the disc,platforms laterally extending from the blades and circumferentially arranged end to end, with respect to each other, so as to form inter-blade cavities, radially between the teeth of the disc and the platforms,downstream of the disc, a downstream annular shroud, with said shroud comprising an outer annular sealing lip opposite the downstream ends of the platforms and an inner annular sealing lip opposite the downstream ...

Blade for a turbine engine, associated turbine engine distributor and turbine engine

A blade for a turbomachine intended to be disposed about an axis while extending radially between a radially outer end and a radially inner end, the blade having at least one cooling cavity opening out to the radially outer end of the blade and to the radially inner end of the blade, the blade having at least a first tubular liner and at least a second tubular liner each engaged in the cavity, the radially outer end of the first liner opening out to the radially outer end of the blade, and the radially inner end of the second liner opening out to the radially inner end of the blade.

Antenna Of An Electromagnetic Probe For Investigating Geological Formations

An antenna of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base and an antenna element . The conductive base comprises an opened non-resonant cavity . The antenna element is embedded in the cavity and goes right through the cavity. The antenna element is isolated from the conductive base . The antenna element is coupled to at least one electronic module via a first A and a second B port, respectively. The electronic module operates the antenna so as to define either a substantially pure magnetic dipole, or a substantially pure electric dipole. 1. An antenna of an electromagnetic probe used in investigation of geological formations surrounding a borehole comprising a conductive base and an antenna element , the conductive base comprising an opened non-resonant cavity , the antenna element being embedded in the cavity and going right through the cavity , the antenna configured to radiate a substantially symmetrical electromagnetic field , the antenna defining either a substantially pure magnetic dipole when the electronic module applies a current to the antenna element such that the current increases from one extremity to the middle of the antenna element and decreases from the middle of the antenna element to the other extremity , or a substantially pure electric dipole when the electronic module applies a current to the antenna element such that the current increases from one extremity to the middle of the antenna element and continues to increase from the middle of the antenna element to the other extremity.2. An antenna of an electromagnetic probe according to claim 1 , wherein the antenna element is a wire strip.3. An antenna of an electromagnetic probe according to claim 1 , wherein the antenna element is electrically isolated from the conductive base.4. An antenna of an electromagnetic probe according to claim 1 , wherein the cavity is filled with a dielectric material.5. An antenna ...

CATALYST

The Fischer-Tropsch process can be used for the conversion of hydrocarbonaceous feed stocks into normally liquid and/or solid hydrocarbons. The feed stock (e.g. natural gas, associated gas and/or coal-bed methane, coal) is converted in a first step into a mixture of hydrogen and carbon monoxide (this mixture is often referred to as synthesis gas or syngas). The synthesis gas (or syngas) is then converted in one or more steps over a suitable catalyst at elevated temperature and pressure into paraffinic compounds ranging from methane to high molecular weight molecules comprising up to 200 carbon atoms, or, under particular circumstances, even more. The present invention relates to a catalyst, a method for manufacturing said catalyst. The present invention further relates to a catalyst obtainable by said method. The present invention further relates to a multi tubular reactor comprising said catalyst. 1. A catalyst for carrying out a Fischer-Tropsch reaction comprising a matrix material (1) and a catalytic material (2) wherein the catalyst comprises stepped-shape channels through which synthesis gas comprising hydrogen and carbon monoxide can flow.2. A catalyst according to wherein the stepped-shape channels are stepped shaped such that a fluid flowing through the catalyst moves up/down a stairs.3. A catalyst according to wherein said channels are in connection with each other such that a fluid can flow from one channel to an adjacent channel.4. A catalyst according to wherein the catalyst has an open volume of more than 60% claim 1 , with respect to the reactor volume.5. A catalyst according to wherein the catalyst has a specific surface area from 1000-5000 m2/m3.6. A catalyst according to wherein the catalytic material is present as a layer on the channel wall and has a layer thickness of from about 1 to 300 microns.7. A catalyst according to wherein the catalytic material comprises a catalyst support material wherein the catalyst support material is selected from ...

Radiation Generator With Floating Field Shaping Electrode

A radiation generator may include an elongate generator housing having a proximal end and a distal end, a target electrode within the housing at the distal end thereof, a charged particle source within the housing at the proximal end thereof to direct charged particles at the target based upon a first biasing potential, and a field shaping electrode within the housing and adjacent the source to shape a field within the housing. At least one accelerator electrode may be within the housing on an opposite side of the field shaping electrode from the source to accelerate charged particles from the source to the target based upon a second biasing potential different than the first biasing potential. The field shaping electrode may be electrically floating so that the charged particles are directed from the source to the target without applying a biasing potential to the field shaping electrode. 1. A radiation generator comprising:an elongate generator housing having a proximal end and a distal end;a target electrode within the elongate generator housing at the distal end thereof;a charged particle source within the elongate generator housing at the proximal end thereof to direct charged particles at said target electrode based upon a first biasing potential;a field shaping electrode within said elongate generator housing and adjacent said charged particle source to shape a field within the elongate generator housing; andat least one accelerator electrode within the housing on an opposite side of said field shaping electrode from said charged particle source to accelerate charged particles from the charged particle source to the target electrode based upon a second biasing potential different than the first biasing potential;said field shaping electrode being coupled with said charged particle source so that the charged particles are directed from said charged particle source to said target electrode without applying a biasing potential to said field shaping electrode ...

HOLLOW TURBINE BLADE WITH REDUCED COOLING AIR EXTRACTION

A hollow turbomachine turbine blade including rising cavities communicating with a squealer tip of the blade through standard dust removal holes intended to remove dust and through inclined cooling bores intended to cool a barrier of the squealer tip by leading to a pressure side face of the blade, at least one rising cavity including a tip with no dust removal hole and an inclined cooling bore formed in its lateral wall and intended to cool the squealer tip barrier is enlarged to have a diameter at least equal to the standard diameter of a dust removal hole and thus also serve as a dust removal hole, so that the air flow extracted for cooling the blade is reduced, at least one of the cavities positioned facing the tip of one of the rising cavities having an increased volume corresponding to at least a volume deducted from the tip of the rising cavity. 1. A hollow turbomachine turbine blade comprising a plurality of rising cavities communicating with a squealer tip of the blade through a plurality of dust removal holes with a standard diameter configured to remove dust , and through a plurality of inclined cooling bores configured to cool a barrier of said squealer tip by leading to a pressure side face of the blade , at least one rising cavity of which a tip has no dust removal hole , comprises an inclined cooling bore formed in its lateral wall and configured to cool said squealer tip barrier and the diameter of which is enlarged to have a diameter at least equal to said standard diameter of a dust removal hole and thus also serve as a dust removal hole , so that the air flow extracted for cooling the blade is reduced , wherein said tip of said at least one rising cavity is inclined with an angle substantially equal to that of said inclined cooling bore and at least one of the cavities of the blade positioned facing said tip of said at least one rising cavity has an increased volume corresponding to at least a volume deducted from said tip of said at least one ...

Input Voltage Modulator For Radiation Generator

A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled to the charged particle source, and an input voltage modulator coupled to the voltage ladder and supplying an amplitude modulated signal thereto. The well-logging tool may further include at least one radiation detector carried by the sonde housing. 1. A well-logging tool comprising:a sonde housing; a generator housing,', 'a target carried by said generator housing,', 'a charged particle source carried by said generator housing to direct charged particles at said target, and', a voltage ladder comprising a plurality of voltage multiplication stages coupled to the charged particle source, and', 'an input voltage modulator coupled to said voltage ladder and supplying an amplitude modulated signal thereto; and, 'at least one voltage source coupled to said charged particle source, said at least one voltage source comprising'}], 'a radiation generator carried by said sonde housing and comprising'}at least one radiation detector carried by said sonde housing.2. The well-logging tool of wherein said voltage ladder generates a variable control voltage to selectively change an emission characteristic of the charged particle source based upon the amplitude modulated signal.3. The well-logging tool of wherein said at least one voltage source further comprises a rectifier coupled downstream from said voltage ladder.4. The well-logging tool of wherein said at least on voltage source further comprises an envelope detector coupled between said voltage ladder and said rectifier.5. The well-logging tool of ...

Compact high-voltage power supply systems and methods

A downhole tool may include a high-voltage power supply disposed within a housing to transform input power to the downhole tool from a first voltage to a second voltage greater than the first voltage. The high-voltage power supply may include an array of capacitors, which may include multiple rows of capacitors. The rows of capacitors may be parallel with a symmetric cross section as viewed from an end of the array of capacitors. The high-voltage power supply may also include diodes electrically coupled to the array of capacitors.

Logging-While-Drilling Tool Incorporating Electronic Radiation Generator And Method For Using Same

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

Radiation Generator Adjusting Beam Focusing Based Upon A Diagnostic Electrode

A radiation generator is provided that includes a target, a cathode to emit electrons in a downstream direction toward the target, a first conductive member downstream of the cathode, and a second conductive member downstream of the cathode. The first and second conductive members have a potential difference with the cathode such that a resultant electric field accelerates the electrons toward the target. A diagnostic current in the second conductive member and a target current in the target may be measured, and an electrical property of the first conductive member may be adjusted based upon the diagnostic current and the target current. 1. A radiation generator comprising:a target;a cathode to emit electrons in a downstream direction toward the target;a first conductive member downstream of the cathode;a second conductive member downstream of the cathode;the first and second conductive members being configured such that a resultant electric field accelerates the electrons toward the target; and measuring a diagnostic current in the second conductive member,', 'measuring a target current in the target, and', 'adjusting an electrical property of the first conductive member based upon the diagnostic current and the target current., 'processing circuitry configured to perform operations comprising2. The radiation generator of claim 1 , wherein the first conductive member has a first opening therein through which the electrons travel as they are accelerated toward the target; wherein the second conductive member has a second opening therein through which the electrons travel as they are accelerated toward the target; and wherein the second opening is smaller than the first opening.3. The radiation generator of claim 1 , wherein the first conductive member is constructed from a first material; wherein the second conductive member is constructed from a second material; and wherein an average atomic number of constituents of the second material is lower than an average ...

USE OF A BACTERIUM ISOLATED FROM THE GENUS PSEUDOALTEROMONAS, CYCLOLIPOPEPTIDES AND USES THEREOF

The present invention relates to an isolated bacterium from the genus for its use as a probiotic, the use of said strain as a preservative, cyclolipopeptides which may be obtained from this bacterium, a composition comprising at least such a cyclolipopeptide, as well as to their uses. 2. The cyclolipopeptide according to claim 1 , wherein R is selected from the group consisting of:alkyl groups comprising between 6 and 14 carbon atoms, except nonyl and undecyl groups;alkylene groups comprising between 6 and 14 carbon atoms, except undec-4-ylene and tridec-6-ylene groups;alkyl groups substituted with an —OH group and comprising between 6 and 14 carbon atoms; andalkylene groups substituted with an —OH groups and comprising between 6 and 14 carbon atoms.3. The cyclolipopeptide according to claim 2 , wherein R is selected from the group consisting of the groups: nonylene claim 2 , in particular nonyl-2-ene claim 2 , nonanol claim 2 , in particular nonan-2-ol claim 2 , heptyl claim 2 , octylene claim 2 , octyl claim 2 , decyldiene claim 2 , decanyl claim 2 , decanol claim 2 , decylene claim 2 , octenol claim 2 , dodecylene and tridecyltriene.4. The cyclolipopeptide according to claim 2 , which may be obtained from a bacterium as defined according to .5. A cosmetic and/or dermatological composition comprising at least one cyclolipopeptide according to in a physiologically acceptable carrier.6. A pharmaceutical composition comprising at least one cyclolipopeptide according to in a pharmaceutically acceptable carrier. This application is a Divisional Application of U.S. application Ser. No. 14/893,366 filed on Mar. 24, 2016, which is a National Phase of Patent Application Serial No. PCT/EP2014/060737, filed on May 23, 2014, which claims priority to French Patent Application No. FR1354691, filed on May 24, 2013, all of which applications are herein incorporated by reference in their entirety.The present invention relates to an isolated bacterium from the genus for its use as ...

Process for preparing a paraffin product

The invention relates to a process for preparing a paraffin product from a carbonaceous feedstock comprising (a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide, (b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the Fischer-Tropsch reaction and a paraffin product, (c)subjecting at least a part of the off-gas from the Fischer-Tropsch reaction to conversion using a catalyst comprising iron, or a catalyst comprising iron and chromium, followed by a hydrogenation step (d) using a steam/off-gas mol ratio in the range of between 0.5 and 1.5 and a catalyst comprising copper and zinc, followed by a conversion step (e) using a nickel based catalyst, and (f) preparing a hydrogen comprising gas from at least a part of the off-gas from the Fischer-Tropsch reaction.

Catalyst

HIGH-PRESSURE TURBINE HOUSING OF A LOCALIZED COOLING TURBOMACHINE

L'invention concerne un carter (2) de turbine haute-pression d'une turbomachine, comprenant une paroi annulaire (6) à partir de laquelle s'étendent radialement vers l'intérieur une patte amont (8) et une patte aval (10) espacées axialement l'une de l'autre et sur lesquelles est assemblée une pluralité de secteurs angulaires d'anneau de turbine (12), l'espace délimité, d'une part radialement entre la paroi annulaire du carter et les secteurs d'anneau de turbine, et d'autre part axialement entre les pattes amont et aval du carter définissant une cavité annulaire de ventilation (18). Le carter comprend en outre une pluralité de tubes de ventilation (26) traversant axialement l'une des pattes du carter pour déboucher à l'intérieur de la cavité de ventilation et muni chacun une pluralité d'orifices (28) calibrés débouchant en regard de la paroi annulaire du carter pour la refroidir entre les pattes amont et aval. The invention relates to a high-pressure turbine casing (2) of a turbomachine, comprising an annular wall (6) from which radially inwardly extends an upstream lug (8) and a downstream lug (10). ) spaced axially from each other and on which is assembled a plurality of angular sectors of the turbine ring (12), the space delimited, on the one hand radially between the annular wall of the housing and the sectors of turbine ring, and secondly axially between the upstream and downstream legs of the housing defining an annular ventilation cavity (18). The casing further comprises a plurality of ventilation tubes (26) passing axially through one of the legs of the casing to open into the ventilation cavity and each provided with a plurality of calibrated orifices (28) emerging opposite the annular wall of the housing for cooling between the upstream and downstream legs.

TURBINE WHEEL IN A TURBOMACHINE

L'invention concerne un ensemble rotatif pour turbomachine, comprenant : - un disque (10) ayant une périphérie externe présentant une alternance d'alvéoles (16) et de dents (18), - des aubes (12) s'étendant radialement depuis le disque (10) et dont des pieds (14) sont engagés axialement dans les alvéoles (16), des espaces appelés cavités d'alvéoles (20a) étant ménagés entre les pieds des aubes et les alvéoles, - des plates formes (22) s'étendant latéralement depuis les aubes (12) et agencées circonférentiellement bout à bout, de manière à former des espaces appelés cavités inter-aubes (26), - un flasque annulaire aval (34), comprenant une lèvre annulaire externe d'étanchéité (38) en regard des extrémités aval des plates-formes (22), Selon l'invention, le flasque annulaire aval (34) comprend en outre une lèvre annulaire intermédiaire d'étanchéité (48) en regard des faces aval des dents (18) du disque, radialement entre les cavités d'alvéoles (20a) et les cavités inter-aubes (26). The invention relates to a rotary assembly for a turbomachine, comprising: - a disc (10) having an outer periphery having an alternation of cells (16) and teeth (18), - vanes (12) extending radially from the disc (10) and whose feet (14) are engaged axially in the cells (16), spaces called cavities of cells (20a) being formed between the blade roots and the cells, - platforms (22) s extending laterally from the blades (12) and arranged circumferentially end to end, so as to form spaces called inter-blade cavities (26), - a downstream annular flange (34), comprising an outer annular sealing lip (38). ) opposite the downstream ends of the platforms (22), according to the invention, the downstream annular flange (34) further comprises an annular lip intermediate sealing (48) facing the downstream faces of the teeth (18) of the disc, radially between the cavities of cells (20a) and the inter-blade cavities (26).

Turbine distributor comprising an annular sealing element

La présente invention concerne un distributeur (3) de turbine (2) présentant un axe (X) de révolution et comprenant : - une bride (6) s’étendant radialement par rapport à l’axe (X); - un anneau d’étanchéité (12) monté sur la bride (6) et comprenant une face interne (15a) configurée pour porter un élément abradable (13) ; - une cavité de ventilation (17) délimitée radialement à l’intérieur par une face externe (15b) de l’anneau d’étanchéité (12) et en aval par une face amont (6a) de la bride (6) ; - un déflecteur configuré pour guider un flux d’air vers la cavité de ventilation (17) ; et - au moins un orifice (20) traversant formé dans l’anneau d’étanchéité (12) et configuré pour mettre en communication fluidique la cavité de ventilation (17) avec la face interne (15a) de l’anneau d’étanchéité (12). Figure pour l’abrégé : Fig. 2 The present invention relates to a distributor (3) for a turbine (2) having an axis (X) of revolution and comprising: - a flange (6) extending radially with respect to the axis (X); - a sealing ring (12) mounted on the flange (6) and comprising an internal face (15a) configured to carry an abradable element (13); - a ventilation cavity (17) delimited radially on the inside by an outer face (15b) of the sealing ring (12) and downstream by an upstream face (6a) of the flange (6); - a deflector configured to guide an airflow to the ventilation cavity (17); and - at least one through orifice (20) formed in the sealing ring (12) and configured to place the ventilation cavity (17) in fluid communication with the internal face (15a) of the sealing ring ( 12). Figure for the abstract: Fig. 2

Turbomachine hollow vane and inter-vane platform equipped with projections that disrupt cooling flow

Aube creuse de turbomachine (10), ladite aube comprenant un circuit de refroidissement (12), une paroi (13) du circuit de refroidissement (12) étant pourvue d’au moins une saillie (14) configurée pour perturber le flux d’air au sein du circuit de refroidissement (12), la au moins une saillie (14) de forme cylindrique s’étendant selon une direction de hauteur (H) perpendiculaire à la paroi (13), la forme cylindrique étant tronquée selon la direction de hauteur (H) sur toute l’étendue de la forme cylindrique selon la direction de hauteur (H). Figure pour l’abrégé : Fig. 5. Hollow turbomachine blade (10), said blade comprising a cooling circuit (12), a wall (13) of the cooling circuit (12) being provided with at least one projection (14) configured to disturb the air flow within the cooling circuit (12), the at least one projection (14) of cylindrical shape extending along a height direction (H) perpendicular to the wall (13), the cylindrical shape being truncated along the height direction (H) over the entire extent of the cylindrical shape in the direction of height (H). Figure for abstract: Fig. 5.

Turbine with pressurized cavities

L’invention concerne une turbine (7) comprenant un premier rotor (25) et un second rotor (27) aptes à pivoter autour d’un axe longitudinal (X) selon deux sens de rotation opposés, le premier rotor (25) comportant un tambour (29) radialement externe à partir duquel des aubes (26) s’étendent radialement vers l’intérieur, le premier rotor (25) et le second rotor (27) étant entourés par une pièce annulaire statorique (31), caractérisé en ce que ladite pièce annulaire statorique (31) délimite avec le tambour (29) au moins une cavité annulaire amont (40) et une cavité annulaire aval (42) séparées l’une de l’autre par des moyens d’étanchéité (44). Figure à publier avec l’abrégé : figure 4 The invention relates to a turbine (7) comprising a first rotor (25) and a second rotor (27) able to pivot around a longitudinal axis (X) according to two opposite directions of rotation, the first rotor (25) comprising a radially outer drum (29) from which vanes (26) extend radially inwards, the first rotor (25) and the second rotor (27) being surrounded by an annular stator part (31), characterized in that that said annular stator part (31) delimits with drum (29) at least one upstream annular cavity (40) and one downstream annular cavity (42) separated from each other by sealing means (44). Figure to be published with abstract: Figure 4

TURBINE RING ASSEMBLY WITH AXIAL RETENTION

Un ensemble d'anneau de turbine comprenant une pluralité de secteurs d'anneau (10) formant un anneau de turbine (1) et une structure de support d'anneau (3) comprenant une bride annulaire amont (32) et une bride annulaire aval (36), chaque secteur d'anneau (10) comprenant une première languette d'étanchéité horizontale (21), une languette d'étanchéité verticale amont (22) et une première languette d'étanchéité verticale aval (23). Chaque secteur d'anneau (10) comprend en outre une deuxième languette d'étanchéité horizontale (20) au-dessus de la première languette d'étanchéité horizontale (21) suivant la direction radiale de l'anneau. Un premier élément d'étanchéité coudé (24) est logé à la fois dans une rainure verticale (42) présente dans la patte amont (14) et dans une deuxième rainure horizontale (40) tandis qu'un deuxième élément d'étanchéité coudé (25) est logé à la fois dans une première rainure horizontale (41) et dans une première rainure verticale (43) présente dans la patte aval (16). A turbine ring assembly comprising a plurality of ring sectors (10) forming a turbine ring (1) and a ring support structure (3) comprising an upstream annular flange (32) and a downstream annular flange (36), each ring sector (10) comprising a first horizontal sealing tongue (21), an upstream vertical sealing tongue (22) and a first downstream vertical sealing tongue (23). Each ring sector (10) further comprises a second horizontal sealing tongue (20) above the first horizontal sealing tongue (21) in the radial direction of the ring. A first bent sealing element (24) is housed both in a vertical groove (42) in the upstream lug (14) and in a second horizontal groove (40) while a second bent sealing element ( 25) is housed in both a first horizontal groove (41) and a first vertical groove (43) in the downstream leg (16).

HOLLOW TURBINE BLADE WITH REDUCED COOLING AIR INTAKE

Aube de turbine creuse de turbomachine comportant une pluralité de cavités montantes (23, 25, 29, 31) communiquant d'une part avec une baignoire (18) de l'aube par une pluralité de trous de dépoussiérage (21 A, 21 B, 21C) destinée à l'évacuation de poussières et d'autre part par une pluralité de perçages de refroidissement inclinés (20A, 20B, 20C, 20D) destinée à refroidir un muret (18B) de la baignoire en débouchant sur une face intrados (12C) de l'aube, au moins une cavité montante (25) comprenant un sommet dépourvu d'un trou de dépoussiérage et un perçage de refroidissement incliné pratiqué dans sa paroi latérale et destiné à refroidir le muret de baignoire est agrandi pour présenter un diamètre au moins égal au diamètre d'un trou de dépoussiérage standard et faire ainsi aussi office de trou de dépoussiérage (51), de sorte que le débit d'air prélevé pour le refroidissement de l'aube est réduit.

Turbine with pressurized cavities

L’invention concerne une turbine (7) comprenant un premier rotor (25) et un second rotor (27) aptes à pivoter autour d’un axe longitudinal (X) selon deux sens de rotation opposés, le premier rotor (25) comportant un tambour (29) radialement externe à partir duquel des aubes (26) s’étendent radialement vers l’intérieur, le premier rotor (25) et le second rotor (27) étant entourés par une pièce annulaire statorique (31), caractérisé en ce que ladite pièce annulaire statorique (31) délimite avec le tambour (29) au moins une cavité annulaire amont (40) et une cavité annulaire aval (42) séparées l’une de l’autre par des moyens d’étanchéité (44). Figure à publier avec l’abrégé : figure 4 The invention relates to a turbine (7) comprising a first rotor (25) and a second rotor (27) able to pivot around a longitudinal axis (X) according to two opposite directions of rotation, the first rotor (25) comprising a radially outer drum (29) from which vanes (26) extend radially inwards, the first rotor (25) and the second rotor (27) being surrounded by an annular stator piece (31), characterized in that that said annular stator part (31) delimits with drum (29) at least one upstream annular cavity (40) and one downstream annular cavity (42) separated from each other by sealing means (44). Figure to be published with abstract: Figure 4

Hollow turbomachine blade and inter-blade platform fitted with projections that disrupt cooling flow

Aube creuse de turbomachine (10), ladite aube comprenant un circuit de refroidissement (12), une paroi (13) du circuit de refroidissement (12) étant pourvue d’au moins une saillie (14) configurée pour perturber le flux d’air au sein du circuit de refroidissement (12), la au moins une saillie (14) de forme cylindrique s’étendant selon une direction de hauteur (H) perpendiculaire à la paroi (13), la forme cylindrique étant tronquée selon la direction de hauteur (H) sur toute l’étendue de la forme cylindrique selon la direction de hauteur (H). Figure pour l’abrégé : Fig. 5. Hollow turbomachine blade (10), said blade comprising a cooling circuit (12), a wall (13) of the cooling circuit (12) being provided with at least one projection (14) configured to disturb the air flow within the cooling circuit (12), the at least one projection (14) of cylindrical shape extending along a height direction (H) perpendicular to the wall (13), the cylindrical shape being truncated along the height direction (H) over the entire extent of the cylindrical shape in the direction of height (H). Figure for abstract: Fig. 5.

Turbomachine hollow vane and inter-vane platform equipped with projections that disrupt cooling flow

Aube creuse de turbomachine (10, 10’), ladite aube comprenant un circuit de refroidissement (12), une paroi (13) du circuit de refroidissement (12) étant pourvue d’au moins une saillie (14) configurée pour perturber le flux d’air au sein du circuit de refroidissement (12), la au moins une saillie (14) s’étendant selon une direction de hauteur (H) perpendiculaire à la paroi (13) depuis un pied (14A) raccordé à la paroi (13) jusqu’à une tête (14B) opposée au pied (14A) et présentant une forme cylindrique de section transverse à la direction de hauteur (H) de forme circulaire (C), la tête (14B) présentant au moins un relief (15, 19) Figure pour l’abrégé : Fig. 4. Hollow turbomachine blade (10, 10'), said blade comprising a cooling circuit (12), a wall (13) of the cooling circuit (12) being provided with at least one projection (14) configured to disturb the flow of air within the cooling circuit (12), the at least one projection (14) extending along a height direction (H) perpendicular to the wall (13) from a foot (14A) connected to the wall ( 13) up to a head (14B) opposite the foot (14A) and having a cylindrical shape with a transverse section in the direction of height (H) of circular shape (C), the head (14B) having at least one relief ( 15, 19) Figure for abstract: Figs. 4.

Catalyst

The Fischer-Tropsch process can be used for the conversion of hydrocarbonaceous feed stocks into normally liquid and/or solid hydrocarbons. The feed stock (e.g. natural gas, associated gas and/or coal-bed methane, coal) is converted in a first step into a mixture of hydrogen and carbon monoxide (this mixture is often referred to as synthesis gas or syngas). The synthesis gas (or syngas) is then converted in one or more steps over a suitable catalyst at elevated temperature and pressure into paraffinic compounds ranging from methane to high molecular weight molecules comprising up to 200 carbon atoms, or, under particular circumstances, even more. The present invention relates to a catalyst, a method for manufacturing said catalyst. The present invention further relates to a catalyst obtainable by said method. The present invention further relates to a multi tubular reactor comprising said catalyst.

Hollow turbine blade with reduced intake of cooling air

Turbomachine hollow turbine blade comprising a plurality of rising cavities (23, 25, 29, 31) communicating with a channel (18) of the blade via a plurality of standard dust-removal holes (21A, 21B, 21C) intended for the removal of dust, and via a plurality of inclined cooling bores (20A, 20B, 20C, 20D) intended for cooling a low wall (18B) of the channel, opening on a lower face (12C) of the blade, at least one rising cavity (25) having an apex that has no dust-removal hole, and an inclined cooling bore produced in its side wall and intended to cool the low wall of the channel is enlarged in order to have a diameter at least equal to the standard diameter of a dust-removal hole and to thus also serve as a dust-removal hole (51), such that the flow of air taken in for the cooling of the blade is reduced, at least one of the cavities of the blade arranged opposite the top of one of the rising cavities having an increased volume corresponding at least to a volume subtracted at the top of the rising cavity.

An electromagnetic probe

An electromagnetic probe 1 measures the electromagnetic properties of a subsurface formation GF in a limited zone surrounding a well-bore hole WBH. The well-bore hole is filled with a well-bore fluid DM. The probe comprises a pad 2 having a first face defining a first area arranged to be positioned in contact with a well-bore wall WBW. The probe 1 further comprises: at least two transmitting antennas 4A, 4B defining a central point CP between them, each antenna being spaced from a distance do from the central point, and at least a first 5A, 5B and a second set 5C, 5D of receiving antennas, each set comprising a first receiving antenna 5A; 5C and a second receiving antenna 5B; 5D, the first receiving antenna being positioned on one side of the transmitting antennas and the second receiving antenna being positioned on other side of the transmitting antennas so that each set encompass the transmitting antennas 4A, 4B.

TURBINE RING ASSEMBLY WITH AXIAL RETENTION

Un ensemble d'anneau de turbine comprenant une pluralité de secteurs d'anneau (10) formant un anneau de turbine (1) et une structure de support d'anneau (3) comprenant une bride annulaire amont (32) et une bride annulaire aval (36), chaque secteur d'anneau (10) comprenant une première languette d'étanchéité horizontale (21), une languette d'étanchéité verticale amont (22) et une première languette d'étanchéité verticale aval (23). Chaque secteur d'anneau (10) comprend en outre une deuxième languette d'étanchéité horizontale (20) au-dessus de la première languette d'étanchéité horizontale (21) suivant la direction radiale de l'anneau. Un premier élément d'étanchéité coudé (24) est logé à la fois dans une rainure verticale (42) présente dans la patte amont (14) et dans une deuxième rainure horizontale (40) tandis qu'un deuxième élément d'étanchéité coudé (25) est logé à la fois dans une première rainure horizontale (41) et dans une première rainure verticale (43) présente dans la patte aval (16). A turbine ring assembly comprising a plurality of ring sectors (10) forming a turbine ring (1) and a ring support structure (3) comprising an upstream annular flange (32) and a downstream annular flange (36), each ring sector (10) comprising a first horizontal sealing tongue (21), an upstream vertical sealing tongue (22) and a first downstream vertical sealing tongue (23). Each ring sector (10) further comprises a second horizontal sealing tongue (20) above the first horizontal sealing tongue (21) in the radial direction of the ring. A first bent sealing element (24) is housed both in a vertical groove (42) in the upstream lug (14) and in a second horizontal groove (40) while a second bent sealing element ( 25) is housed in both a first horizontal groove (41) and a first vertical groove (43) in the downstream leg (16).

Airfoil for a turbomachine, corresponding distributor for a turbomachine and turbomachine

Radiation generator input voltage modulator

An antenna of an electromagnetic probe for investigating geological formations

An antenna 3 of an electromagnetic probe used in investigation of geological formations GF surrounding a borehole WBH comprises a conductive base 31 and an antenna element 32. The conductive base 31 comprises an opened non-resonant cavity 33. The antenna element 32 is embedded in the cavity 33 and goes right through the cavity. The antenna element 32 is isolated from the conductive base 31. The antenna element 32 is coupled to at least one electronic module via a first 34A and a second 34B port, respectively. The electronic module operates the antenna so as to define a simultaneously superposed pure magnetic dipole and pure electric dipole.

Energy radiation generator with uni-polar voltage ladder.

Una herramienta de perfilaje en pozos puede incluir un alojamiento de sonda y un generador de radiación transportado por el alojamiento de sonda. El generador de radiación puede incluir un alojamiento del generador, un objetivo transportado por el alojamiento del generador, una fuente de partículas cargadas transportada por el alojamiento del generador para dirigir las partículas cargadas al objetivo y al menos una fuente de voltaje conectada a la fuente de partículas cargadas. La fuente de al menos un voltaje puede incluir una escalera de voltaje que comprende una pluralidad de etapas de multiplicación de voltaje conectadas en una configuración unipolar y al menos una bobina de carga conectada al menos una posición intermedia a lo largo de la escalera de voltaje. La herramienta de perfilaje de pozos puede incluir además al menos un detector de radiación transportado por el alojamiento de sonda.

Energy radiation generator with bi-polar voltage ladder

Process for producing a purified synthesis gas stream

A process for producing a purified synthesis gas stream from a feed synthesis gas stream comprising besides the main constituents carbon monoxide and hydrogen also hydrogen sulphide, HCN and/or COS, the process comprising the steps of: (a) removing HCN and/or COS by contacting the feed synthesis gas stream with a catalyst in a HCN/COS reactor in the presence of steam/water, to obtain a synthesis gas stream depleted in HCN and/or in COS; (b) converting hydrogen sulphide in the synthesis gas stream depleted in HCN and/or in COS to elemental sulphur, by contacting the synthesis gas stream with an aqueous reactant solution containing solubilized Fe(III) chelate of an organic acid, at a temperature below the melting point of sulphur, and at a sufficient solution to gas ratio and conditions effective to convert H 2 S to sulphur and inhibit sulphur deposition, to obtain a synthesis gas stream depleted in hydrogen sulphide; (c) removing carbon dioxide from the synthesis gas stream depleted in hydrogen sulphide, to obtain the purified synthesis gas stream and a gas stream enriched in CO 2 .

Process to prepare a hydrogen rich gas mixture

The invention is directed to a process to prepare a hydrogen rich gas mixture from a solid sulphur- and halogen-containing carbonaceous feedstock. The process involves the following steps. Step (a): gasification of the solid carbonaceous feedstock with an oxygen-containing gas to obtain a gas mixture comprising halogen compounds, sulphur compounds, hydrogen and at least 50 vol. % carbon monoxide, on a dry basis. Step (b): contacting the gas mixture with a quench gas or quench liquid to reduce the temperature of the gas mixture to below 900° C. Step (c) contacting the gas mixture with water having a temperature of between 150 and 250° C. to obtain a gas mixture comprising between 50 and 1000 ppm halogen and having a steam to carbon monoxide molar ratio of between 0.2:1 and 0.9:1. Step (d): subjecting the gas mixture obtained in step (c) to a water gas shift reaction wherein part or all of the carbon monoxide is converted with the steam to hydrogen and carbon dioxide in the presence of a catalyst as present in one fixed bed reactor or in a series of more than one fixed bed reactors and wherein the temperature of the gas mixture as it enters the reactor or reactors is between 190 and 230° C. Step (e): carbon dioxide and sulphur compounds are separated from the shifted gas mixture obtained in step (d) by contacting the shifted gas mixture with a solvent comprising dialkyl ethers of polyethylene glycol.

Process for producing a purified synthesis gas stream

A process for producing a purified synthesis gas stream from a feed synthesis gas stream comprising besides the main constituents carbon monoxide and hydrogen also hydrogen sulphide, HCN and/or COS, the process comprising the steps of : (a) removing HCN and/or COS by contacting the feed synthesis gas stream with a catalyst in a HCN/COS reactor in the presence of steam/water, to obtain a synthesis gas stream depleted in HCN and/or in COS; (b) converting hydrogen sulphide in the synthesis gas stream depleted in HCN and/or in COS to elemental sulphur, by contacting the synthesis gas stream with an aqueous reactant solution containing solubilized Fe(III) chelate of an organic acid, at a temperature below the melting point of sulphur, and at a sufficient solution to gas ratio and conditions effective to convert H2S to sulphur and inhibit sulphur deposition, to obtain a synthesis gas stream depleted in hydrogen sulphide; (c) removing carbon dioxide from the synthesis gas stream depleted in hydrogen sulphide, to obtain the purified synthesis gas stream and a gas stream enriched in CO2.

Wellhead container for a geothermal system

A wellhead container for a geothermal system includes a base configured to engage a bottom of a recess within a ground. The recess extends vertically from the bottom of the recess to a surface of the ground, the base includes at least one first opening, and the at least one first opening is configured to receive a drilling string. The wellhead container includes a top configured to support a load applied by a drilling machine to the wellhead container. The top includes second openings, and each second opening is configured to receive the drilling string. The wellhead container includes a sidewall extending along a vertical axis between the base and the top. The sidewall is configured to position an upper surface of the top substantially flush with the surface of the ground, and the sidewall is configured to transfer at least a portion of the load to the base.

Process to prepare a hydrogen rich gas mixture

Process to prepare a hydrogen rich gas mixture from a halogen containing gas mixture comprising hydrogen and at least 50 vol.% carbon monoxide, on a dry basis, by contacting the halogen containing gas mixture with water having a temperature of between 150 and 250°C to obtain a gas mixture poor in halogen and having a steam to carbon monoxide molar ratio of between 0.2:1 and 0.9:1 and subjecting said gas mixture poor in halogen to a water gas shift reaction wherein part or all of the carbon monoxide is converted with the steam to hydrogen and carbon dioxide in the presence of a catalyst as present in one fixed bed reactor or in a series of more than one fixed bed reactors and wherein the temperature of the gas mixture as it enters the reactor or reactors is between 190 and 230°C.

Gain stabilization of gamma-ray scintillation detector

Systems and methods for stabilizing the gain of a gamma-ray spectroscopy system are provided. In accordance with one embodiment, a method of stabilizing the gain of a gamma-ray spectroscopy system may include generating light corresponding to gamma-rays detected from a geological formation using a scintillator having a natural radioactivity, generating an electrical signal corresponding to the light, and stabilizing the gain of the electrical signal based on the natural radioactivity of the scintillator. The scintillator may contain, for example, naturally radioactive elements such as Lutetium or Lanthanum.

Turbine ring assembly with axial retention

The invention relates to a turbine ring assembly including a plurality of ring sectors (10) forming a turbine ring (1), and a ring support structure (3) including an upstream ring-shaped flange (32) and a downstream ring-shaped flange (36), each ring sector (10) including a first horizontal sealing tab (21), an upstream vertical sealing tab (22) and a first downstream vertical sealing tab (23). Each ring sector (10) further includes a second horizontal sealing tab (20) above the first horizontal sealing tab (21) in the radial direction of the ring. A first angled sealing element (24) is housed in both a vertical groove (42) in the upstream lug (14) and a second horizontal groove (40), while a second angled sealing element (25) is housed in both a first horizontal groove (41) and a first vertical groove (43) in the downstream lug (16).

Distributed energy resource system design and operation

An energy management system for enhancing design and operation of a distributed energy resource system includes a two-level design system and a hierarchical optimization-based control system. The two-level design system includes a top-level designer configured to coordinate decentralized bottom-level designers for individual energy resources to seek a global target for the designed distributed energy resource system that satisfies the energy demand of a target deployment location within a confidence level, and multiple bottom-level designers configured to enhance detailed designs of local energy sub-systems. The hierarchical optimization-based control system include a primary controller configured to determine a long-term operational schedule based on long-term constraints and future events at a first level, one or more secondary controllers configured to control daily orchestrations of the distributed energy resource system during operation at a second level, and multiple tertiary controllers and aggregators configured to rapidly adjust various hardware at a third level.

IMPROVED VENTILATION TURBINE ROTOR

L’invention concerne un rotor de turbine (32) s’étendant autour d’un axe longitudinal (X-X’), le rotor (32) comprenant -un premier disque amont (32a) et un deuxième disque aval (32b) lié en rotation avec ce dernier par une virole (V1) s’étendant axialement entre les disques de manière à séparer radialement une cavité interne (C1i) à la virole proche de l’axe longitudinal (X-X’) et une cavité externe (C1e) à la virole en éloignement de cet axe,le rotor (32) comprenant également un système de ventilation des disques configuré pour distribuer, d’une part, au premier disque amont (32a) un premier flux φ1 de ventilation destiné à traverser le premier disque amont et, d’autre part, au deuxième disque aval (32b) un deuxième flux φ2 de ventilation destiné à traverser le deuxième disque aval et qui est obtenu à partir du premier flux φ1 de ventilation ayant traversé le premier disque amont Figure pour l’abrégé : Fig.3A The invention relates to a turbine rotor (32) extending around a longitudinal axis (X-X'), the rotor (32) comprising -a first upstream disc (32a) and a second downstream disc (32b) connected in rotation with the latter by a ferrule (V1) extending axially between the discs so as to radially separate an internal cavity (C1i) at the ferrule close to the longitudinal axis (X-X') and an external cavity (C1e ) to the shroud away from this axis, the rotor (32) also comprising a disc ventilation system configured to distribute, on the one hand, to the first upstream disc (32a) a first ventilation flow φ1 intended to cross the first upstream disc and, on the other hand, to the second downstream disc (32b) a second ventilation flow φ2 intended to cross the second downstream disc and which is obtained from the first ventilation flow φ1 having crossed the first upstream disc 'Abstract: Fig.3A

INSULATED BACTERIA OF THE GENUS PSEUDOALTEROMONAS, CYCLOLIPOPEPTIDES, AND USES THEREOF

Process for preparing a paraffin product

The invention relates to a process for preparing a paraffin product from a carbonaceous feedstock comprising (a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide, (b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the Fischer–Tropsch reaction and a paraffin product, (c) hydrogenating at least a part of the off-gas from the Fischer-Tropsch reaction using a steam/off-gas mol ratio in the range of between 0.5and 1.5 and a catalyst comprising copper and zinc, followed by a conversion step (d) using a nickel based catalyst, and (e) preparing a hydrogen comprising gas from at least a part of the off-gas from the Fischer-Tropsch reaction.

WELL PROFILING TOOL, RADIATION GENERATOR, AND METHOD TO MAKE A RADIATION GENERATOR

GERADOR DE RADIAÇÃO, E FERRAMENTA DE PERFILAGEM DE POÇO. Uma ferramenta de perfilagem de poço pode incluir um alojamento de sonda e um gerador de radiação levado pelo alojamento de sonda. O gerador de radiação pode incluir um alojamento de gerador, um alvo levado pelo alojamento de gerador, uma fonte de partículas carregadas levada pelo alojamento de gerador para dirigir partículas carregadas no alvo, e pelo menos uma fonte de voltagem acoplada à fonte de partículas carregadas. A pelo menos uma fonte de voltagem pode incluir uma escada de voltagem compreendendo uma pluralidade de estágios de multiplicação de voltagem acoplados em uma configuração unipolar e pelo menos uma bobina de carregamento acoplada em pelo menos uma posição intermediária ao longo da escada de voltagem. A ferramenta de perfilagem de poço ainda pode incluir pelo menos um detector de radiação levado pelo alojamento de sonda. RADIATION GENERATOR, AND WELL PROFILING TOOL. A well logging tool may include a probe housing and a radiation generator carried by the probe housing. The radiation generator may include a generator housing, a target carried by the generator housing, a source of charged particles carried by the generator housing to direct charged particles to the target, and at least one voltage source coupled to the source of charged particles. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a unipolar configuration and at least one charging coil coupled at at least an intermediate position along the voltage ladder. The well logging tool may further include at least one radiation detector carried by the probe housing.

A probe for measuring the electromagnetic properties of a down-hole material

A probe 1 for measuring the electromagnetic properties of a down-hole material MC, GF, DM of a well-bore WB comprises a metallic pad 2 in contact with the down- hole material. The pad 2 further comprises an open-ended coaxial wire 4 coupled to an electronic circuit 3. The open-ended coaxial wire 4 comprises an inner conductor 4A sunk in an insulator 4B and is positioned sensibly perpendicularly to the well- bore wall. The electronic circuit 3 is able to send a high-frequency input signal into the open-ended coaxial wire 4 and to determine a reflection coefficient based on a high-frequency output signal reflected by the open-ended coaxial wire 4.

Logging-while-drilling tool incorporating electronic radiation generator and method for using same

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

X-ray generator output regulation

The techniques and device provided herein relate to regulating a source generator in an X-ray based equipment. In particular, an X-ray system is provided that comprises an X-ray generator and a reference detector system that regulates the output of the X-ray generator. The reference detector system comprises a direct channel that allows at least a portion of the photons to directly reach the detector crystal and a plurality of fluorescent channels, such that photon flux entering the reference detector from the fluorescent channels is negligibly impacted by variations of beam spots, shapes and/or positions.

Process for preparing a paraffin product

The invention relates to a process for preparing a paraffin product from a carbonaceous feedstock comprising (a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide, (b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the FischerTropsch reaction and a paraffin product, (c) hydrogenating at least a part of the off-gas from the Fischer-Tropsch reaction using a steam/off-gas mol ratio in the range of between 0.5and 1.5 and a catalyst comprising copper and zinc, followed by a conversion step (d) using a nickel based catalyst, and (e) preparing a hydrogen comprising gas from at least a part of the off-gas from the Fischer-Tropsch reaction.

Turbine rotor comprising a blade stop ring configured to promote cooling of the blade roots.

La présente invention concerne un rotor (1) de turbine comprenant un disque de rotor (2), muni à sa périphérie d’une pluralité d’alvéoles axiales (23) de réception d’un pied (30) bilobé d’une aube (3), chaque alvéole (23) comprenant une cavité radialement interne (232) et une cavité radialement externe (231). Ce rotor est remarquable en ce qu’il comprend un anneau (4) de retenue axiale des pieds d’aubes et un flasque annulaire (5), l’anneau (4) comprenant une partie radialement interne munie d’échancrures (43) et étant disposé contre la face amont (21) du disque (2), de sorte que chacune de ses échancrures (43) soit située en face d’une alvéole (23) du disque (2), le flasque (5) étant fixé contre la face amont de l’anneau (4), ménageant un espace (E) avec ledit disque (2) et comportant au moins un orifice d’admission d’air (54) qui débouche dans ledit espace (E) et en ce que chaque aube (3) comprend une gorge (33) de réception du bord circonférentiel externe (46) dudit anneau (4). Figure pour l’abrégé : Fig. 3 The present invention relates to a turbine rotor (1) comprising a rotor disk (2), provided at its periphery with a plurality of axial cells (23) for receiving a bilobed root (30) with a blade ( 3), each cell (23) comprising a radially internal cavity (232) and a radially external cavity (231). This rotor is remarkable in that it comprises a ring (4) for axial retention of the blade roots and an annular flange (5), the ring (4) comprising a radially internal part provided with indentations (43) and being arranged against the upstream face (21) of the disc (2), so that each of its notches (43) is located opposite a cell (23) of the disc (2), the flange (5) being fixed against the upstream face of the ring (4), leaving a space (E) with the said disc (2) and comprising at least one air intake orifice (54) which opens into the said space (E) and in that each vane (3) comprises a groove (33) for receiving the outer circumferential edge (46) of said ring (4). Figure ...

Hollow turbine blade with reduced cooling air extraction

A hollow turbomachine turbine blade including rising cavities communicating with a squealer tip of the blade through standard dust removal holes intended to remove dust and through inclined cooling bores intended to cool a barrier of the squealer tip by leading to a pressure side face of the blade, at least one rising cavity including a tip with no dust removal hole and an inclined cooling bore formed in its lateral wall and intended to cool the squealer tip barrier is enlarged to have a diameter at least equal to the standard diameter of a dust removal hole and thus also serve as a dust removal hole, so that the air flow extracted for cooling the blade is reduced, at least one of the cavities positioned facing the tip of one of the rising cavities having an increased volume corresponding to at least a volume deducted from the tip of the rising cavity.

Rotor de turbine comprenant un anneau d’arrêt d’aubes configuré pour favoriser le refroidissement des pieds d’aubes.

La présente invention concerne un rotor (1) de turbine comprenant un disque de rotor (2), muni à sa périphérie d’une pluralité d’alvéoles axiales (23) de réception d’un pied (30) bilobé d’une aube (3), chaque alvéole (23) comprenant une cavité radialement interne (232) et une cavité radialement externe (231). Ce rotor est remarquable en ce qu’il comprend un anneau (4) de retenue axiale des pieds d’aubes et un flasque annulaire (5), l’anneau (4) comprenant une partie radialement interne munie d’échancrures (43) et étant disposé contre la face amont (21) du disque (2), de sorte que chacune de ses échancrures (43) soit située en face d’une alvéole (23) du disque (2), le flasque (5) étant fixé contre la face amont de l’anneau (4), ménageant un espace (E) avec ledit disque (2) et comportant au moins un orifice d’admission d’air (54) qui débouche dans ledit espace (E) et en ce que chaque aube (3) comprend une gorge (33) de réception du bord circonférentiel externe (46) dudit anneau (4). Figure pour l’abrégé : Fig. 3

Gerador de radiação, e ferramenta de perfilagem de poço

gerador de radiação, e ferramenta de perfilagem de poço. uma ferramenta de perfilagem de poço pode incluir um alojamento de sonda e um gerador de radiação levado pelo alojamento de sonda. o gerador de radiação pode incluir um alojamento de gerador, um alvo levado pelo alojamento de gerador, uma fonte de partículas carregadas levada pelo alojamento de gerador para dirigir partículas carregadas no alvo, e pelo menos uma fonte de voltagem acoplada à fonte de partículas carregadas. a pelo menos uma fonte de voltagem pode incluir uma escada de voltagem compreendendo uma pluralidade de estágios de multiplicação de voltagem acoplados em uma configuração bipolar e pelo menos uma bobina de carregamento acoplada em pelo menos uma posição intermediária ao longo da escada de voltagem. a ferramenta de perfilagem de poço ainda pode incluir pelo menos um detector de radiação levado pelo alojamento de sonda.

High-voltage protection and shielding within downhole tools

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.

Turbine with pressurised cavities

A turbine has a first rotor and a second rotor configured to pivot about a longitudinal axis (X) according to two opposite directions of rotation. The first rotor has a radially outer drum from which bladesextend radially inwards. The first rotorand the second rotor are surrounded by a stator annular part. The stator annular partdelimits, with the drum, at least one upstream annular cavityand one downstream annular cavityseparated from each other by sealing means.

Blade for a turbine engine, associated turbine engine distributor and turbine engine

A blade for a turbomachine intended to be disposed about an axis while extending radially between a radially outer end and a radially inner end, the blade having at least one cooling cavity opening out to the radially outer end of the blade and to the radially inner end of the blade, the blade having at least a first tubular liner and at least a second tubular liner each engaged in the cavity, the radially outer end of the first liner opening out to the radially outer end of the blade, and the radially inner end of the second liner opening out to the radially inner end of the blade.

Aube creuse de turbomachine et plateforme inter-aubes équipées de saillies perturbatrices de flux de refroidissement

Aube creuse de turbomachine (10, 10’), ladite aube comprenant un circuit de refroidissement (12), une paroi (13) du circuit de refroidissement (12) étant pourvue d’au moins une saillie (14) configurée pour perturber le flux d’air au sein du circuit de refroidissement (12), la au moins une saillie (14) s’étendant selon une direction de hauteur (H) perpendiculaire à la paroi (13) depuis un pied (14A) raccordé à la paroi (13) jusqu’à une tête (14B) opposée au pied (14A) et présentant une forme cylindrique de section transverse à la direction de hauteur (H) de forme circulaire (C), la tête (14B) présentant au moins un relief (15, 19) Figure pour l’abrégé : Fig. 4.

Distributed energy resource system design and operation

Anneau d'etancheite pour turbine demontable par l'amont

Turbine pour turbomachine comprenant un carter (1) annulaire, des supports d'anneau amont (3) et aval (4) et un anneau d'étanchéité (2) configuré pour s'étendre autour et venir radialement en regard d'un aubage (6) d'un rotor de la turbine, les supports sont montés contre une surface radialement interne du carter (1), l'anneau d'étanchéité (2) étant configuré pour être disposé radialement entre l'aubage (6) et le carter (1), et étant monté contre le support amont et le support aval, l'anneau d'étanchéité (2) présentant un rayon maximal vis-à-vis de l'axe principal (X) de la turbine, et le carter (1) étant dimensionné de sorte que le rayon maximal de l'anneau d'étanchéité (2) soit strictement inférieur au rayon de l'extrémité amont du carter (1) de sorte à permettre un montage par insertion axiale, de l'anneau d'étanchéité (2) et du support d'anneau amont (3), contre le support d'anneau aval (4).

Wellhead container for a geothermal system

Anneau d’étanchéité pour turbine démontable par l’amont

Turbine pour turbomachine comprenant un carter (1) annulaire, des supports d’anneau amont (3) et aval (4) et un anneau d’étanchéité (2) configuré pour s’étendre autour et venir radialement en regard d’un aubage (6) d’un rotor de la turbine, les supports sont montés contre une surface radialement interne du carter (1), l’anneau d’étanchéité (2) étant configuré pour être disposé radialement entre l’aubage (6) et le carter (1), et étant monté contre le support amont et le support aval, l’anneau d’étanchéité (2) présentant un rayon maximal vis-à-vis de l’axe principal (X) de la turbine, et le carter (1) étant dimensionné de sorte que le rayon maximal de l’anneau d’étanchéité (2) soit strictement inférieur au rayon de l’extrémité amont du carter (1) de sorte à permettre un montage par insertion axiale, de l’anneau d’étanchéité (2) et du support d’anneau amont (3), contre le support d’anneau aval (4). Figure pour l’abrégé : Fig. 2

Sourceless downhole x-ray tool

An x-ray downhole tool with at least two targets and at least one measurement detector

The current disclosure is related to a downhole tool that comprises an electronic photon generator and at least one detector. The electronic photon generator comprises a cathode configured to emit electrons, a first target configured to generate photons when struck by the electrons, a second target configured to generate photons when struck by the electrons, and a beam steering device that directs the electrons to a first or second target. The at least one detector is configured to detect at least some of the photons emitted by the first target and at least some of the photons emitted by the second target

Sourceless downhole x-ray tool

Systems, methods, and devices relating to a sourceless X-ray downhole tool are provided. By way of example, such a downhole tool may include an X-ray generator, an X-ray detector, and data processing circuitry. The X-ray generator may emit some X-rays out of the downhole tool and some X-rays internally through the downhole tool. The X-ray detector may detect some of the X-rays that return to the downhole tool, as well as some of the X-rays that pass internally through the downhole tool. The data processing circuitry may gain-stabilize the X-ray detector based at least in part on the X-rays that passed internally through the downhole tool and were detected by the X-ray detector.

Logging-while-drilling tool incorporating electronic radiation generator and method for using same

Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

Recovery of waste energy from battery energy storage systems

Certain aspects of the present disclosure provide techniques for recovery of waste energy from a battery energy storage system. A system includes a battery energy storage system including one or more rechargeable batteries; an energy recovery system coupled to the battery energy storage system, wherein the energy recovery system is configured to: capture heat generated by one or more of charging and discharging the one or more rechargeable batteries; and store or use energy associated with the captured heat.

Recovery of waste energy from battery energy storage systems

Certain aspects of the present disclosure provide techniques for recovery of waste energy from a battery energy storage system. A system includes a battery energy storage system including one or more rechargeable batteries; an energy recovery system coupled to the battery energy storage system, wherein the energy recovery system is configured to: capture heat generated by one or more of charging and discharging the one or more rechargeable batteries; and store or use energy associated with the captured heat.

Process for removing contaminants from waste plastics oil

A process for the removal of contaminant from a contaminated liquid waste plastics oil, said process comprising: (i) contacting the contaminated liquid waste plastics oil having an initial contaminant content with a washing stream having a pH of greater than, the washing stream comprising a washing solvent, a phase transfer catalyst, and optionally a reducing agent; (ii) mixing the contaminated liquid waste plastics oil with the washing stream to produce a reaction mixture; (iii) settling the reaction mixture into at least a hydrocarbon phase having a final contaminant content that is less than the initial contaminant content, and an aqueous phase containing at least one reaction product of the contaminant and the washing stream, and (iv) separating the hydrocarbon phase from the aqueous phase.

Distributeur de turbine comportant un élément annulaire d'étanchéité

La présente invention concerne un distributeur (3) de turbine (2) présentant un axe (X) de révolution et comprenant : - une bride (6) s'étendant radialement par rapport à l'axe (X); - un anneau d'étanchéité (12) monté sur la bride (6) et comprenant une face interne (15a) configurée pour porter un élément abradable (13); - une cavité de ventilation (17) délimitée radialement à l'intérieur par une face externe (15b) de l'anneau d'étanchéité (12) et en aval par une face amont (6a) de la bride (6); - un déflecteur configuré pour guider un flux d'air vers la cavité de ventilation (17); et - au moins un orifice (20) traversant formé dans l'anneau d'étanchéité (12) et configuré pour mettre en communication fluidique la cavité de ventilation (17) avec la face interne (15a) de l'anneau d'étanchéité (12).

Methods for producing a geothermal well

A method of producing a geothermal well includes obtaining site information including at least a site volume; obtaining drilling parameters; determining lengths and orientations of planned wellbores based at least partially on the site information and the drilling parameters.