HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

DUAL CATION HYDRATE INHIBITORS

Dual cation hydrate inhibitor compositions and methods of using such compositions to, for example, inhibit the formation of gas hydrate agglomerates are provided. In some embodiments, such methods include introducing a hydrate inhibitor composition into a fluid, wherein the hydrate inhibitor composition includes at least one compound having the structural formula: wherein each of R 1 , R 2 , and R 3 is independently a C 1 to C 6 hydrocarbon chain, wherein R 4 is selected from the group consisting of hydrogen and any C 1 to C 50 hydrocarbon chain, wherein each of R 5 and R 6 is independently selected from the group consisting of hydrogen and a C 1 to C 50 hydrocarbon chain, wherein X − and Y − are counter anions, and wherein each of a and b is independently an integer from 1 to 10.

AMIDODIAMINE CORROSION INHIBITORS

Methods for providing corrosion inhibition in conduits, containers, and wellbores penetrating subterranean formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibitor additive. In certain embodiments, the corrosion inhibitor additive comprises a compound comprising a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

DUAL CATION HYDRATE INHIBITORS

Dual cation hydrate inhibitor compositions and methods of using such compositions to, for example, inhibit the formation of gas hydrate agglomerates are provided. In some embodiments, such methods include introducing a hydrate inhibitor composition into a fluid, wherein the hydrate inhibitor composition includes at least one compound having the structural formula: wherein each of R1, R2 and R3 is independently a C1 to C6 hydrocarbon chain, wherein R4 is selected from the group consisting of hydrogen and any C1 to C50 hydrocarbon chain, wherein each of R5 and R6 is independently selected from the group consisting of hydrogen and a C1 to C50 hydrocarbon chain, wherein X_ and Y_ are counter anions, and wherein each of a and b is independently an integer from 1 to 10.

Digital false proof mark that synthesizes of membrane class texture

The utility model relates to an anti -fake technical field especially relates to a digital false proof mark that synthesizes of membrane class texture. Including film and sign medium, the sign medium is located at random form texture at random in the film, the sign medium is visual sign and/or hidden sign. The loading is equipped with anti -counterfeiting information on the sign medium. Anti -counterfeiting information includes product colour, product pattern, the product place of production etc. The film is pp or po or pet or pvc or pe film. The sign medium is less than 0.02mm. It has realized not only that the texture is anti -fake, has solved the waterproof solvent problem of preventing, the macromolecular material has translucent and full transparent moreover, sees the marker of the inside very easily, differentiatees more easily.

Micro-emulsion completion fluid and application of the micro-emulsion completion fluid

The invention discloses a micro-emulsion completion fluid. The micro-emulsion completion fluid comprises the following components: an oil phase, a water phase, a surfactant, an auxiliary surfactant, a salt and a cleaning agent, wherein the cleaning agent is selected from an oxidant and a biological enzyme. The completion fluid provided by the invention has good comprehensive performance and facilitates cleaning of the formation damages caused by the drilling fluids, especially by the water-base drilling fluids; and the micro-emulsion completion fluid is capable of increasing crude oil yield when the well is put into operation. The completion fluid provided by the invention has wide application prospect.

Hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

DOUBLE-HEADED HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

HIGH TEMPERATURE HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a low-dosage hydrate inhibitor additive into a fluid, wherein the low-dosage hydrate inhibitor additive comprises a quaternary or tertiary ammonium cation moiety, a lipophilic tail, and a sulfonate anion moiety; and exposing the low-dosage hydrate inhibitor additive to a temperature above about 200°F.

Composition, micro-nanofiber cleaning agent as well as preparation method and application of micro-nanofiber cleaning agent

The invention relates to a composition, a micro-nanofiber cleaning agent as well as a preparation method and application of the micro-nanofiber cleaning agent. The composition includes a first homopolymer grafted polyester microfiber, a second homopolymer grafted nanocellulose, and a cross-linking agent. The preparation method of the micro-nanofiber cleaning agent comprises the following steps: S1, reacting a raw material system containing the composition and a solvent to obtain a reactant containing the micro-nanofiber cleaning agent; and optionally, S2, the solvent contained in the reactant is removed, and the micro-nanofiber cleaning agent is obtained. The molecular weight of the micro-nano fiber cleaning agent is 60000 to 90000. The invention further discloses application of the micro-nano fiber cleaning agent in drilling fluid, especially application in drilling cutting cleaning agents. According to the micro-nanofiber cleaning agent, a'rod + fluff 'structure is designed by referring ...

Double-headed hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

HIGH TEMPERATURE HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a low-dosage hydrate inhibitor additive into a fluid, wherein the low- dosage hydrate inhibitor additive comprises a quaternary or tertiary ammonium cation moiety, a lipophilic tail, and a sulfonate anion moiety; and exposing the low-dosage hydrate inhibitor additive to a temperature above about 200°F.

Double-headed hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

DOUBLE-HEADED HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties. 2. The hydrate inhibitor composition of claim 1 , wherein each of X and Y is independently selected from the group consisting of: a carboxylate claim 1 , a halide claim 1 , a sulfate claim 1 , an organic sulfonate claim 1 , a hydroxide claim 1 , and any combination thereof.3. The hydrate inhibitor composition of claim 1 , wherein Ris a Cto Chydrocarbon chain resulting from a reaction between an acrylate or a methacrylate and an amine claim 1 , the amine being selected from the group consisting of:a synthetic primary amine selected from the group consisting of: butylamine, hexylamine, octylamine, dodecylamine, and any combination thereof;a primary fatty amine derived from one or more fatty acids selected from the group consisting of: corn oil, canola oil, coconut oil, safflower oil, sesame oil, palm oil, cottonseed oil, soybean oil, olive oil, sunflower oil, hemp oil, wheat germ oil, palm kernel oil, vegetable oil, caprylic acid, capric acid, lauric acid, stearic acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, sapienic acid, elaidic acid, vaccenic acid, linoleic acid, arachidic acid, arachidonic acid, eicosapentaenoic acid, erucic acid, docosahexaenoic acid, behenic acid, lignoceric acid, cerotic acid, oleic acids (cis- and trans-), and any combination thereof; andany combination thereof.4. The hydrate inhibitor composition of further comprising a solvent selected from the group consisting of: an alcohol claim 1 , methanol claim 1 , isopropyl alcohol claim 1 , glycol claim 1 , ethylene glycol claim 1 , an organic solvent claim 1 , toluene claim 1 , xylene claim 1 , monobutyl ether ...

ADDITIVE TO DECREASE THE POUR POINT OF PARAFFIN INHIBITORS

Included are compositions, methods, and systems for producing and using winterized paraffin inhibitor solutions. An example composition comprises a paraffin inhibitor solution; and an additive comprising a first portion and a second portion; wherein the first portion is selected from the functional groups consisting of sulfo, phosphate, phosphonate, ester, carboxyl, hydroxyl, and any combination thereof; wherein the second portion is selected from the functional groups consisting of linear alkyl, branched alkyl, alkyl phenyl, ethoxylated branched alkyl, propoxylated branched alkyl, and any combination thereof.

DOUBLE-HEADED HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

CORROSION INHIBITORS AMIDODIAMINA

Se proporcionan métodos para la inhibición de la corrosión en conductos, recipientes y pozos que penetran formaciones subterráneas. En algunas modalidades, los métodos comprenden poner en contacto una superficie metálica con un fluido que comprende un aditivo inhibidor de corrosión. En determinadas modalidades, el aditivo inhibidor de corrosión comprende un compuesto que comprende un resto catiónico hidrofóbico, una o más colas lipofílicas y un resto de enlace. Reivindicación 1: Un método que comprende: poner en contacto una superficie metálica con un fluido que comprende un aditivo inhibidor de corrosión, en donde el aditivo inhibidor de corrosión comprende al menos un compuesto que tiene la fórmula estructural (1), en donde cada uno de R¹, R², y R³ se selecciona independientemente del grupo que consiste en hidrógeno y un grupo hidrocarbilo C₁ a C₁₆, en donde R⁴ se selecciona del grupo que consiste en hidrógeno y un grupo hidrocarbilo C₁ a C₅₀, en donde R⁵ es un grupo hidrocarbilo C₁ a C₅₀, en donde X⁻ es un contraanión, y en donde cada uno de a y b es independientemente un entero de 1 a 10.

Hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

Efficient local interconnection structure facing to fully-distributed very long instruction word

The invention discloses an efficient local interconnection structure facing to a fully-distributed very long instruction word, which aims to solve the problem that a VLIW (Very Long Instruction Word) full interconnection structure consumes more hardware resources and has lower energy efficiency. The efficient local interconnection structure is characterized in that the efficient local interconnection structure is connected into a symmetrical local interconnection structure by n functional units through a local interconnection network, i.e. the functional units output and supply results to themselves and a plurality of functional units forming adjacent connection relations with the functional units; the n functional units and n busbars are arranged in the symmetrical local interconnection structure; a 1tock local interconnection structure is adopted, wherein k is less than or equal to n; the 1tock local interconnection structure is that the functional unit ALUi outputs the results to the ...

High temperature hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a low-dosage hydrate inhibitor additive into a fluid, wherein the low- dosage hydrate inhibitor additive comprises a quaternary or tertiary ammonium cation moiety, a lipophilic tail, and a sulfonate anion moiety; and exposing the low-dosage hydrate inhibitor additive to a temperature above about 200°F.

Low dosage hydrate inhibitor

A low dosage hydrate inhibitor blend comprising a cationic surfactant and a co- surfactant. The cationic surfactant has the structural formula: wherein: R1 is an alkyl group or alkenyl group having from 5 to 22 carbon atoms, R2 and R3 are alkyl groups having from 1 to 6 carbon atoms, R4 is a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, and X- is selected from the group of a carboxylate, an acrylate, a methacrylate, a halide, a phosphonate, a sulfate, a sulfonate, a hydroxide, a carbonate, or any combination thereof; and The co-surfactant is present in the inhibitor blend in an amount of no greater than about 10 percent by weight based on the total weight of the blend.

Gas-liquid auxiliary forming device and method for hydrophilic antibacterial medical microtubule

The invention discloses a gas-liquid auxiliary forming device and method for a hydrophilic antibacterial medical microtube, and belongs to the technical field of medical microtube preparation. The device comprises a supporting system, a raw material pretreatment and conveying system, a medical microtubule extrusion system, a gas-liquid auxiliary system, a cooling system, a curing and detecting system, a traction and segmentation system, a sorting and sterilizing system and an intelligent control system. The hydrophilic antibacterial medical microtubule gas-liquid auxiliary forming process is completed through the steps of raw material dehumidification and rotary feeding, auxiliary gas-liquid generation, medical microtubule extrusion, cooling shaping, surface curing, defect detection and fixed-length measurement, cutting, sorting, sterilization and the like in sequence through the devices. Continuous batch type processing forming of the medical microtubules can be achieved, the overall forming ...

Detection equipment for automatically detecting capacitance of capacitor

The invention relates to the technical field of electronic component detection equipment, in particular to detection equipment for automatically detecting capacitor capacity, which comprises a bearing table, a door-shaped rack is arranged on the bearing table, a visual detection mechanism is arranged on a cross beam of the door-shaped rack, and a first linear driving module is erected on the bearing table below the cross beam; the first linear driving module and the cross beam are arranged in parallel, a carrying manipulator is arranged on the first linear driving module, and the carrying manipulator is driven by the first linear driving module to do reciprocating motion; a material dispersing mechanism, a capacity detection mechanism and a storage mechanism are sequentially arranged on the bearing table and located below the first linear driving module side by side; according to the technical scheme, bulk material disc taking and placing, scanning, capacitor capacity detection and separate ...

Double-headed hydrate inhibitors and methods of use

DOUBLE-HEADED HYDRATE INHIBITORS AND METHODS OF USE Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

High temperature hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a low-dosage hydrate inhibitor additive into a fluid, wherein the low- dosage hydrate inhibitor additive comprises a quaternary or tertiary ammonium cation moiety, a lipophilic tail, and a sulfonate anion moiety; and exposing the low-dosage hydrate inhibitor additive to a temperature above about 200°F.

Double-headed hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

Comb-type polymer, preparation method and application thereof

The invention discloses a comb-type polymer or a salt thereof. The comb type polymer has a structural formula as follows; R1-R6 and R9-R10 are the same or different, and can be independently selected from hydrogen and C1-C22 alkyl; R7 is selected from hydrogen and alkyl sulfonic acid containing 1-22 carbon atoms; R8 is selected from hydrogen, C1-C22 alkyl, carboxylic acid groups and groups with the general formula COO[(CH2)xO]mCH3; and R11 is selected from (CH2)nCH3(CH2) and [(CH2)xO]mCH3, wherein a:b:c is 20-50:9-49:1-60, x is an integer from 2 to 4, n is an integer from 14 to 22, and m is an integer from 5 to120. The comb-type polymer provided by the invention can be used as a filtrate reducer in water base drilling fluid, makes up the failure of a conventional filtrate reducer under high temperature and high salinity conditions, and has good high temperature resistance and salt resistance; and the production process is simple and at low cost. The comb-type polymer provided by the invention ...

Cooling water circulation system

The invention provides a cooling water circulation system which comprises a cooling tower, a cooling pump, a main water supply pipeline, a water return pipeline, an air compressor water supply pipeline, a first water distribution pipeline and a controller, a water inlet of the cooling pump is communicated with the cooling tower, and a water outlet of the cooling pump is connected with a water inlet of the main water supply pipeline; a water outlet of the water return pipeline is communicated with the cooling tower; the first water distribution pipeline and the air compressor water supply pipeline are arranged between the main water supply pipeline and the water return pipeline in parallel, the air compressor water supply pipeline comprises a first water supply branch and three air compressor water supply branches which are arranged in parallel, and the three air compressor water supply branches are all connected with the first water supply branch in series; the three air compressor water ...

Well wall stabilizer as well as preparation method and application thereof

The invention discloses a borehole stabilizer as well as a preparation method and application thereof. The borehole wall stabilizer is prepared from the following raw materials: benzyl sulfonated tannin, alkyl sodium sulfonate, nanofiber suspension, nano silicon dioxide and a cross-linking agent. The borehole wall stabilizer provided by the invention can improve the temperature resistance, salt resistance and borehole wall stability of the drilling fluid.

Method and equipment used for multi-media resource searching

The invention aims at providing a method and an equipment used for multi-media resource searching, wherein the multi-media searching equipment obtains the query sequence of the user; according to the query sequence, matching query is conducted in an index information bank so as to obtain a multi-media searching result corresponding to the query sequence; according to the multi-media searching result and a page corresponding to the multi-media searching result, a searching result corresponding to the query sequence is generated; and the searching result is provided for the user. The method and equipment realize that the user can obtain the multi-media resource information corresponding to the query sequence by directly browsing the searching result without clicking the searching result; the searching result clicking cost of the user, caused by querying the multi-media resource needed, can be reduced; the fast positioning of the multi-media resource searching result is realized; the searching ...

HIGH TEMPERATURE HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a low-dosage hydrate inhibitor additive into a fluid, wherein the low-dosage hydrate inhibitor additive comprises a quaternary or tertiary ammonium cation moiety, a lipophilic tail, and a sulfonate anion moiety; and exposing the low-dosage hydrate inhibitor additive to a temperature above about 200° F. 2. The method of wherein the organic moiety is selected from the group consisting of: an alkyl group claim 1 , an alkenyl group claim 1 , an aryl group claim 1 , an arylalkyl group claim 1 , an arylalkenyl group claim 1 , an alkylaryl group claim 1 , an alkenylaryl group claim 1 , a heterocyclic group claim 1 , a hydroxyl group claim 1 , a carbonyl group claim 1 , an amine group claim 1 , and any combination thereof.3. The method of wherein the fluid comprises at least one component selected from the group consisting of: water claim 1 , a gas claim 1 , a liquid hydrocarbon claim 1 , and any combination thereof.4. The method of wherein the low-dosage hydrate inhibitor additive is introduced into a quaternary ammonium cation moiety or a tertiary ammonium cation moiety the fluid through a conduit or an injection point having a temperature above about 200° F. and the low-dosage hydrate inhibitor additive is exposed to the temperature above about 200° F. in the conduit or the injection point.5. The method of wherein the fluid has a temperature above about 200° F. and the low-dosage hydrate inhibitor additive is exposed to the temperature above about 200° F. in the fluid.6. The method of wherein the low-dosage hydrate inhibitor additive does not substantially degrade after being substantially continually exposed to the temperature of above about 200° F.7. The method of wherein the low-dosage hydrate inhibitor additive does not substantially degrade for up to about 7 days.8. The method ...

Amidodiamine corrosion inhibitors

Methods for providing corrosion inhibition in conduits, containers, and wellbores penetrating subterranean formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibitor additive. In certain embodiments, the corrosion inhibitor additive comprises a compound comprising a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

Filter element of full-closed type particle trap and use method

The invention discloses a filter element of a full-closed type particle trap and a use method. The filter element comprises a filter element body which is formed by alternately laminating and winding the same layers of corrugated metal plates and alloy fiber felts in sequence; a peak channel and a trough channel are formed in the corrugated metal plates respectively; a peak baffle plate is mounted on the peak channel; a trough baffle plate is mounted on the trough channel; the height of the peak baffle plate is equal to that of the peak; the height of the trough baffle plate is equal to that of the trough. The distances between the peak baffle plate and the adjacent trough baffle plates are equal, so that the filtering efficiency is high, and the regeneration time is short.

Integration electric heating floor

The application discloses integration electric heating floor, including floor surface course and electricity heating module, electricity heating module includes in proper order: rubber layer, electric heating cable, back up coat, heat reflection layer and heat preservation noise reduction layer, its characterized in that, continuous U type groove structure is set to floor surface course downside, the embedded installation electric heating cable of inslot, be equipped with the rubber layer between the contact surface of electric heating cable and U type recess, back up coat, heat reflection layer and heat preservation noise reduction layer are located floor surface course below in proper order, make electric heating cable and U type recess closely laminate. Electric heating floor has the heating is fast, be heated even, heat utilization rate is high, energy -concerving and environment -protective, convenient, the safety of installation, advantage such as longe -lived.

Comb polymer, method of preparing the same, and use thereof

The present disclosure discloses a comb polymer or a salt thereof, wherein the structural formula of the comb polymer containing the following constitutional units. When the comb polymer provided in the present disclosure is used in a water-based drilling fluid as a filtration control agent, it can eliminate the defects of conventional filtration control agents which would be subject to ineffectiveness under high temperature and high salinity conditions. The comb polymer has high temperature and salt resistance, and can be produced through simple processes at comparatively low costs. When the comb polymer provided by the present disclosure is used as a filtration control agent, even being added into the drilling fluid at a comparatively low amount, it can still present rather good effects in lowering the amount of filter loss.

Biological soybean meal

The invention discloses a biological soybean meal which is used in the breeding feed industry. The production process of the soybean meal comprises the steps of: firstly activating yeast strain by a first-stage test tube, then carrying out second-stage shallow dish culture and third-stage expanding fermentation, later, adding 0.05 percent of beer for carrying out fourth-stage solid material submerged fermentation for 24 hours; wherein the components of the solid material thereof comprise 8 percent to 12 percent of soybean meal, 20 percent to 28 percent of cottonseed meal, 20 percent to 28 percent of sesame meal, 18 percent to 22 percent of animal CP, 12 percent to 18 percent of DDGS, and 3 percent to 8 percent of auxiliary material; and dying, crushing, adding the auxiliary material, finally mixing and stirring to obtain the finished product, and then putting the finished product into a warehouse after being inspected and packed. The invention adopts high-technology green biological four-stage ...

Expansion bucket rod apparatus rod excavating machinery

The present invention discloses a flexible dipper device of excavating machinery, comprising an upper dipper, a lower dipper and a flexible cylinder; wherein the upper dipper is sheathed in the lower dipper, the head part of a cylinder rod of the flexible cylinder is articulated with the middle part of the upper dipper, a rear overhang lug of the flexible cylinder is articulated with the rear end of the lower dipper, the inside of the flexible dipper device is also provided with an upper dipper guide travel mechanism and the back side of the flexible dipper device is provided with an upper dipper locking mechanism. When the upper dipper is locked, a locking plate is arranged in a locking seat of the upper dipper and the locking seat is articulated with the locking plate. Guide track pressure plates are respectively fixedly arranged at the two longitudinal inner sides of the lower dipper, supporting cushion blocks are respectively arranged at the inside of the bottom of the lower dipper ...

Image angle detection method based on reverse features

The invention relates to the technical field of image processing, in particular to a reverse feature-based image angle detection method, which comprises the following steps of: acquiring the maximum outer contour of a detection feature in a to-be-detected image; obtaining a corresponding reverse feature image by using the maximum outer contour of the detection feature; the image angle of the to-be-detected image is obtained by using the reverse feature image, and the angle is judged according to the reverse feature physical position obtained in the reverse feature image, so that the problems of positioning precision deviation and product color deviation by using a template are eliminated, the problem of uncertain production threshold is also solved, a datamation judgment mode is ensured, and the accuracy of product detection is improved. And the detection precision and the detection compatibility are greatly improved.

Hydrophobic temporary plugging drilling fluid

The invention relates to a temporary plugging drilling fluid used during drilling process in petroleum exploration wells and production wells, and belongs to a hydrophobic temporary plugging drilling fluid system. The defect that conventional temporary plugging drilling fluid has strong secondary pollution is overcome. The invention is characterized in that the drilling fluid comprises processingagents such as mixed heavy calcium, a nano calcium carbonate-starch compound, a nano emulsion, glycol, etc. A mud cake formed by the drilling fluid at a drilling well is compact, and has a hydrophobic channel which can control the inflow of a filtrate and provide a flow channel for oil gas during well completion. The technology is mainly used in naked-eye well completion operations. The temporaryplugging layer has a high permeability recovery value, and a low starting pressure.

Method for detecting deadlock in network on chip

The invention discloses a method for detecting a deadlock in a network on a chip and aims at providing a method for immediately and accurately detecting a deadlock once the deadlock occurs. According to the technical scheme, the method comprises the following steps: creating a channel waiting network with the synchronous function according to a topologic interconnection structure of a routing network; detecting the deadlock based on the channel waiting network every a time interval T after starting the routing network; obtaining initial waiting relationships between corresponding channels and adjacent channels by CWL (Channel Wait Label) modules, and removing channels without waiting relationships with adjacent channels through logic detection, namely enabling channels corresponding to the rest CWLs after the CWL modules with input or output signals being 0 in the channel waiting network reach a steady-state network to be existent in a deadlock node. The method can be used for finishing ...

Movable temporary blow-off pipeline support

The utility model belongs to the technical field of riverway cleaning equipment, and particularly relates to a movable temporary blow-off pipeline support which comprises a base, a shelf and a top frame. Four lower stand columns are fixedly connected to the upper end of the base, and a plurality of movable trundles are installed at the lower end of the base. The shelf comprises four middle stand columns, and a cross rod is supported and welded between every two middle stand columns; the top frame comprises four upper stand columns, a top plate is fixedly connected to the upper ends of the upper stand columns in a supporting mode, and a pipeline fixing base is fixedly connected to the upper portion of the top plate. The pipeline fixing base comprises an upper arc-shaped plate and a lower arc-shaped plate, and the upper arc-shaped plate and the lower arc-shaped plate are vertically, symmetrically and detachably connected together. The lower end of the middle stand column is detachably connected ...

Portable non-screen display and input system

The invention discloses a portable non-screen display and input system, which comprises a signal source terminal, a portable non-screen display and input terminal, a non-screen display part and a virtual input part; the signal source terminal is a signal source of the system and is in wired connection or wireless connection with the portable non-screen display and input terminal, and picture information is transmitted to the portable non-screen display and input terminal; the portable non-screen display and input terminal is a master control part of the system, and is respectively and electrically connected with the signal source terminal, the non-screen display part and the virtual input part. Compared with the prior art, the portable non-screen display and input system disclosed by the invention meets the broader display and input requirements of people; the mobile phone-based portable mobile display and input system emerges as times require, can be used for performing non-screen display ...

Environment -friendly is water storage tank for fire control

The utility model discloses an environment -friendly is water storage tank for fire control, including water storage tank, jar mouth, wash tank ball, filter screen and sight glass, the water storage tank surface is equipped with the viewing aperture, water storage tank bottom end fixedly connected with prevents the ripples baffle, water storage tank one end is equipped with a jar mouth, jar mouthful one side fixedly connected with rubber seal, the water storage tank other end is equipped with the sight glass, sight glass one side is equipped with the cat ladder, the water storage tank top is equipped with swift joint, be equipped with filter screen and filter screen setting below swift the joint inside the water storage tank. The utility model discloses simple structure, the modern design,the water pipe butt joint is saved time rapidly, improves work efficiency, can effectually get rid of the harmful substance of aquatic, avoids using for a long time water storage tank inside to breedthe ...

Embedded two-stage lifting unloading platform door

The invention discloses an embedded two-stage lifting unloading platform door which comprises an embedded machine box, a first lifting mechanism is arranged in the embedded machine box, the embedded machine box is connected with a machine box door through the first lifting mechanism, a second lifting mechanism is arranged in the machine box door, and the second lifting mechanism is connected with the machine box door through the second lifting mechanism. The case door is connected with an unloading door through a second lifting mechanism; and the unloading door is a grating door. When the platform door is installed, the embedded case is embedded under the platform ground, the case door and the unloading door are integrally embedded into the embedded case, the case door and the unloading door are lifted through two-stage lifting to achieve the protection effect when the door is closed, the door body is completely hidden in the embedded case under the ground when the door is opened, and getting-on ...

Control system and method for multi-tank feeding and liquid mixing in well drilling

The invention provides a control system and method for multi-tank feeding and liquid mixing for well drilling, in the system, a feeding tank is provided with a slurry mixing water feeding valve, a slurry mixing water escape valve, a feeding water feeding valve and a feeding water escape valve, a liquid mixing tank is provided with a slurry mixing water escape valve, and a liquid mixing pump is connected with the slurry mixing water feeding valve and the slurry mixing water escape valve respectively; the feeding pump is connected with the feeding water feeding valve and the feeding water escape valve, the feeding water feeding valve on the feeding tank body is connected with the liquid mixing tank body through the communicating valve, the liquid mixing tank body is communicated with a slurry source, and the circulating pump is arranged at an outlet of the liquid mixing tank body. The electric control system is electrically connected with the slurry mixing water feeding valve, the slurry ...

Book storage support capable of automatically returning

The invention discloses a book storage support capable of automatically returning, and belongs to the technical field of book management, the book storage support comprises a support body, a horizontally arranged partition plate is arranged on the inner side of the support body, a book storage area is formed on the upper side of the partition plate, and a storage opening is formed in the back side of the book storage area; a guide rod is longitudinally arranged on the lower side of the partition plate, a pushing assembly and a pre-pressing assembly are in sliding fit with the guide rod at the same time, an open groove is longitudinally formed in the partition plate, the acting parts of the pushing assembly and the pre-pressing assembly extend into the book storage area from the open groove, and the pre-pressing assembly is located on the side away from the storage opening; an elastic pre-pulling device is arranged between the pre-pressing assembly and the support body, the pushing assembly ...

Underground pipeline anchoring type reinforcing device

The utility model provides an anchoring type reinforcing device for an underground pipeline. The device comprises a fixing rod, the fixing rod is provided with at least two sliding pieces, the two sliding pieces are respectively provided with a locking structure fixed with the fixing rod 1, the same sides of the two sliding pieces are respectively connected with an anchoring piece through a pin shaft in a rotating mode, and the two pin shafts are parallel and are respectively perpendicular to the fixing rod. The utility model relates to an anchoring type reinforcing device for an underground pipeline. The two anchoring parts are respectively arranged on the fixed rod through a sliding part; the positions of the two anchoring parts are adjusted according to the positions of the pipelines embedded in the side wall of the groove; and then the two anchoring pieces are anchored at the upper position and the lower position of the pipe to reinforce the side wall of the groove, meanwhile, thefixing ...

Filter element of semi-closed type isobaric particle trap and using method

The invention discloses a filter element of a semi-closed type isobaric particle trap and a using method. The filter element comprises a filter element body, wherein the filter element body is formed by sequentially and alternatively stacking and winding wave-shaped metal plates and alloy fiber mats in the same layer number, wave peak channels and wave trough channels are respectively formed in the wave-shaped metal plates, wave peak through holes are formed in the wave peak channels, wave trough through holes are formed in the wave trough channels, wave peak oblique baffle plates are arranged on the wave peak channels, wave trough oblique baffle plates are arranged on the wave trough channels, the height of the wave peak oblique baffle plates is smaller than the height of wave peaks, and the height of the wave trough oblique baffle plates is smaller than the height of wave troughs. According to the filter element disclosed by the invention, the effects of high filter efficiency, low exhaust ...

Expansion bucket rod apparatus rod excavating machinery

The invention discloses a flexible dipper device of excavating machinery, comprising an upper dipper, a lower dipper and a flexible cylinder; wherein the upper dipper is sheathed in the lower dipper, the head part of a cylinder rod of the flexible cylinder is articulated with the middle part of the lower dipper, a rear overhang lug of the flexible cylinder is articulated with the rear end of the lower dipper, the inside of the flexible dipper device is also provided with an upper dipper guide travel mechanism and the back side of the flexible dipper device is provided with an upper dipper locking mechanism. When the upper dipper is locked, a locking plate is arranged in a locking seat of the upper dipper and the locking seat is articulated with the locking plate. Guide track pressure plates are respectively fixedly arranged at the two longitudinal inner sides of the lower dipper, supporting cushion blocks are respectively arranged at the inside of the bottom of the lower dipper and the ...

Information safety protection system and method for interaction between power grid regulation and control system and electric vehicle

The invention discloses an information safety protection system and method for interaction of a power grid regulation and control system and an electric vehicle, and the method comprises the steps: constructing the information safety protection system of the power grid regulation and control system and the electric vehicle, and carrying out the initialization and authentication of each entity in a safety protection scheme; ring signcryption operation is carried out before the electric vehicle is connected to the power grid, and the mutual authentication process of the electric vehicle and the power grid is completed; and finally, the electric vehicle decrypts and verifies the information requesting for charging and discharging, and forwards the information to the convergence unit and the power grid control center step by step, and the power grid control center completes decryption of ring signcryption and completes electricity charge metering. According to the method, the identity authentication ...

Ceramic flux for build-up welding

The ceramic flux is suitable for automatic submerged-arc surfacing welding of cold-rolling roller. It has the chemical components by weight of: CaCo3 40-45%, CaF2 10-15%, Al2O3 5-10%, TiO2 15-18%, K2CO3 1-3%, Ti-Fe 2-5%, Mo-Fe 1-2% and W-Fe 1-3%. In conjunction with 50 CrV welding wire, surfacing layer with very high normal-temp. hardness and wear resistance may be obtained.

Support leg gap adjusting device

The invention discloses a support leg gap adjusting device which comprises a guide cylinder, a guide rod and a gap adjusting mechanism, wherein one end of the guide rod is fixedly connected with a support, the other end is movably connected with an inner hole of the guide cylinder, the gap adjusting mechanism is arranged at the lower end of the outer side of the guide cylinder and comprises a fixed adjusting pad, a supporting block, a supporting plate, an adjusting pad, a front adjusting block, a back adjusting block and an adjusting bolt, the fixed adjusting pad is arranged between the guide cylinder and the guide rod, the supporting block is fixedly arranged on the outer side which is opposite to the fixed adjusting pad of the guide cylinder, one side of the adjusting pad is propped against the vertical surface of the supporting block, the inner and the outer adjusting blocks are superposed and arranged in an inner hole of the supporting plate and an outer wall hole of the guide cylinder ...

Variable error rate-oriented check point interval real-time determining method

The invention discloses a variable error rate-oriented check point interval real-time determining method and aims to provide a method for accurately measuring and calculating a real-time error rate and dynamically adjusting a check point interval executed by an application. According to the technical scheme, the method comprises the following steps: establishing a variable error rate based check point control system which is composed of a check point control module, an error rate measuring and calculating module and an error recovery module; judging if the present check point interval is finished or not and updating a check point state by the check point control module; performing error recovery by the error recovery module and measuring and calculating the error rate and confirming the check point interval by the error rate measuring and calculating module; lastly, setting the check point interval and resetting the starting of a check point by the check point control module. According ...

Information system based on multistage centralized and hierarchical management mode

The invention relates to an information system based on a multistage centralized and hierarchical management mode. Along with the further application of informatization in management of enterprises and the constant improvement of self-demand of the enterprises, the traditional management informatization mode can not meet the requirements for modern management of the enterprises, and some inextricable problems are brought to the enterprises. The information system comprises an organizational management module, an authority management module, a role management module, a user management module, a log management module and a system configuration module which are connected in sequence and interacted for communication. The invention effectively realizes varied flexible configuration in the same system to adapt to management requirements on group enterprises under different operating modes, realizes both effective centralized management and relatively independent hierarchical management, and avoids ...

Additive to decrease the pour point of paraffin inhibitors

Included are compositions, methods, and systems for producing and using winterized paraffin inhibitor solutions. An example composition comprises a paraffin inhibitor solution; and an additive comprising a first portion and a second portion; wherein the first portion is selected from the functional groups consisting of sulfo, phosphate, phosphonate, ester, carboxyl, hydroxyl, and any combination thereof; wherein the second portion is selected from the functional groups consisting of linear alkyl, branched alkyl, alkyl phenyl, ethoxylated branched alkyl, propoxylated branched alkyl, and any combination thereof.

Float type stirring and sucking desilting device

The utility model belongs to the technical field of riverway cleaning equipment, and particularly relates to a float-type stirring and sucking desilting device which comprises a bottom frame, and a plurality of floats are installed on the periphery of the bottom frame. A portal is mounted above the underframe, and two fixed pulleys are mounted below a cross beam of the portal; the device further comprises an inflator pump, an outlet of the inflator pump is connected with an inflation pipe, the inflation pipe bypasses one of the fixed pulleys, and the tail end of the inflation pipe is connectedwith a stirring and sucking cage; a water pump is placed in the stirring and sucking cage, an outlet of the water pump is connected with a sewage pipe, the sewage pipe bypasses the other fixed pulley, and the tail end of the sewage pipe is communicated with a sewage pool; the stirring and sucking cage comprises an air distribution assembly and a base, the air distribution assembly comprises a plurality ...

Hydraulic pressure control system of loaderdigger

The utility model discloses a hydraulic pressure control system of loaderdigger, including hydraulic oil pump, multiple unit valve assembly and hydraulic tank, hydraulic oil pump from hydraulic tank oil absorption is through getting back to hydraulic tank through the multiple unit valve assembly of control hydro -cylinder after the hydraulic oil pump pressurization, the assembly was controlled to the oil return before multiple unit valve assembly front end was equipped with the valve. When the complete machine was in the idling state, hydraulic system was out of work in work, and the fluid of controlling assembly messenger hydraulic oil pump through oil return before the valve directly returns hydraulic tank, reduces loss of pressure effectively, has reduced the complete machine oil consumption. The utility model discloses a multiple unit valve assembly has adopted the sensitive principle of load in its oil feed piece, when fluid this valve of flowing through, during the valve block attonity ...

Heart sound, lung sound and fetal heart sound acquisition and health management system and method

The invention discloses a heart sound, lung sound and fetal heart sound acquisition and health management system, which comprises an acquisition terminal, a transmission system, a platform processing system and a storage and display system, wherein the acquisition terminal is used for acquiring the heart sound or lung sound or fetal heart sound condition of a human body, and converting the heart sound or lung sound or fetal heart sound condition into an electric signal; the acquisition terminal is in communication connection with the transmission system through a wired network or a wireless network, and the transmission system is a mobile phone; the transmission system is in communication connection with the platform processing system through the wireless network, and the platform processing system is a health management service cloud platform; the storage and display system is a mobile phone, and is in communication connection with the platform processing system through the wireless network ...

Hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

Electronic organ demonstration equipment based on smart phone

The invention discloses electronic organ demonstration equipment based on a smart phone. The electronic organ demonstration equipment consists of a key processing-displaying unit and the smart phone, wherein the contour structure of the key processing-displaying unit is the same as that of an ordinary electronic organ; key sizes and arrangement are no different from those of the ordinary electronic organ; the difference lies in that a red-yellow-green tricolor display driving and key detection circuit is arranged below the keys; the functions of the mobile phone are implemented by installing customized applications, and mainly comprise making a synchronous response to the key-pressing situation of the key processing-displaying unit, controlling a loudspeaker in the mobile phone to make corresponding beat tones and counting key information in order to perform error counting and replay storage. In the equipment, the functions of the conventional smart phone are fully utilized. Compared with ...

Raw material composition, filtrate reducer for drilling fluid as well as preparation method and application of filtrate reducer

The invention relates to a raw material composition, a filtrate reducer for drilling fluid and a preparation method and application of the filtrate reducer. The raw material composition comprises a monomer A, a monomer B, a monomer C, a monomer D and an inorganic material, and the inorganic material is selected from at least one of graphene oxide and modified graphene oxide, preferably silane coupling agent modified graphene oxide. The filtrate reducer for the drilling fluid is prepared from the raw material composition. The preparation method comprises the following step: polymerizing a raw material system containing the raw material composition and a filtrate reducer solvent under the action of an initiator to generate a reactant containing the filtrate reducer. The invention also comprises application of the fluid loss additive for the drilling fluid in the drilling fluid, especially application of the fluid loss additive as the fluid loss additive. The filtrate reducer can resist the ...

Hydraulic control system for backhoe loader

The invention discloses a hydraulic control system for a backhoe loader. The hydraulic control system for the backhoe loader comprises a hydraulic oil pump, a multiway valve assembly and a hydraulic oil tank. The hydraulic oil pump absorbs oil from the hydraulic oil tank, and the oil returns to the hydraulic oil tank through the multiway valve assembly controlling an oil cylinder after the oil is pressurized by the hydraulic oil pump. A valve-front oil return control assembly is arranged at the front end of the multiway valve assembly. When the whole machine is in an idle state, a working hydraulic system does not work, oil liquid in the hydraulic pump directly returns to the hydraulic oil tank through the valve-front oil return control assembly, the pressure loss is lowered effectively, and the oil consumption of the whole machine is lowered. The load sensing principle is adopted to an oil-taking sheet of the multiway valve assembly, when the oil liquid flows through the multiway valve ...

Magnetic dipole target positioning method based on nonlinear separable least square

The invention relates to the technical field of magnetic target positioning, and discloses a magnetic dipole target positioning method based on nonlinear separable least squares, and the method comprises the steps: obtaining magnetic anomaly data generated by a magnetic target through a magnetic sensor array, converting a magnetic target positioning optimization problem into a nonlinear separable least squares problem, and carrying out the positioning of the nonlinear separable least squares. Namely, unknown parameters in magnetic target positioning are divided into a linear part and a nonlinear part, a variable projection method is adopted to convert an optimization problem into a nonlinear optimization problem only containing target position parameters, the number of the unknown parameters is reduced from six to three, and then the nonlinear optimization problem is solved through a particle swarm optimization algorithm. And obtaining position parameters of the target to realize target ...

Support leg gap adjusting device

The invention discloses a support leg gap adjusting device which comprises a guide cylinder, a guide rod and a gap adjusting mechanism, wherein one end of the guide rod is fixedly connected with a support, the other end is movably connected with an inner hole of the guide cylinder, the gap adjusting mechanism is arranged at the lower end of the outer side of the guide cylinder and comprises a fixed adjusting pad, a supporting block, a supporting plate, an adjusting pad, a front adjusting block, a back adjusting block and an adjusting bolt, the fixed adjusting pad is arranged between the guidecylinder and the guide rod, the supporting block is fixedly arranged on the outer side which is opposite to the fixed adjusting pad of the guide cylinder, one side of the adjusting pad is propped against the vertical surface of the supporting block, the inner and the outer adjusting blocks are superposed and arranged in an inner hole of the supporting plate and an outer wall hole of the guide cylinder ...

Half -closed burning board

The utility model discloses a half -closed burning board, including the burning edition of books body, the burning edition of books body is formed with the coiling of metal flat board alternate coincide in proper order by the metal wave plate that the number of piles is the same, crest passageway and trough passageway have been seted up on the metal wave plate respectively, the crest through -hole has been seted up on the crest passageway, the trough through -hole has been seted up on the trough passageway, install crest diagonal cleat board on the crest passageway, install trough diagonal cleat board on the trough passageway, the height that highly is less than the crest of crest diagonal cleat board, the height that highly is less than the trough of trough diagonal cleat board. Thereby make the infrared of pot body reflection reflected by crest diagonal cleat board and trough diagonal cleat board, prevent that the infrared of pot body reflection from getting into gas fuel passag to prevent ...

Glass fiber cotton felt adhesive agent and preparing method and application thereof

The invention discloses a glass fiber cotton felt adhesive agent and a preparing method thereof. According to the preparing method of the glass fiber cotton felt adhesive agent, 300-600 parts of phenolic resin, 300-600 parts of a first additive, 80-120 parts of a second additive, 400-600 parts of a softening agent solution and 600-1000 parts of softened water, by weight, are mixed and stirred for 1-2 hours. The invention further discloses an application of the glass fiber cotton felt adhesive agent in glass fiber cotton felt production. The prepared glass fiber cotton felt adhesive agent has the advantages that free aldehyde is 0.5 wt%-2wt%, free phenol is lower than or equal to 0.5wt%, and the using rate of the adhesive agent is 80%-86%. The 60-second vertically-burning self-extinguishing time of the glass fiber cotton felt made with the adhesive agent is shorter than or equal to 10 seconds, the firing phenomenon is avoided, the maximum specific optical density of the glass fiber cotton ...

Load balancing method of server system and apparatus

The invention, which is suitable for the technical field of communication securities, provides a load balancing method of server system and a server system. The server system comprises a plurality of servers. The method comprises the following steps that: a first server broadcasts information of the first server to other servers of the server system; the first server carries out calculation according to the information of other server so as to obtain weight values of other servers; when the first server received a to-be-processed request, the weight value of the first server and the weight values of other servers are extracted from cache, and an optimal server is found out from the server system based on the weight value of the first server and the weight values of other servers; and the to-be-processed request is sent to the optimal server. According to the technical scheme, the load balancing effect is good.

Method and equipment for acquiring yellow page information based on query sequence

The invention aims to provide a method and equipment for acquiring yellow page information based on a query sequence. The method comprises the following steps of: acquiring the query sequence input by a user through user equipment by using network equipment; judging whether the query sequence contains yellow page requirement related information according to the query sequence; when the query sequence contains the yellow page requirement related information, performing matching query in a yellow page index library according to the yellow page requirement related information to acquire one or more matched web pages, wherein the yellow page information in the one or more matched web pages is matched with the yellow page requirement related information; and supplying the one or more matched web pages to the user equipment. Compared with the prior art, the method and the equipment for acquiring the matched yellow page information based on the query sequence input by the user not only improve ...

Optimal power flow implementation method considering transient security constraints

The invention belongs to the field of safe and economical operation of power systems, and provides an optimal power flow (OTS) implementation method considering transient security constraints, which is based on safe and stable quantitative analysis and optimization decision theory and method- extended equal-area criterion (EEAC), brings transient security of a system into a traditional optimal power flow (OPF) mode, uniformly coordinates and considers safety and economical efficiency of operation of the system, and provides decision support for safe and economical operation of the power system. The method divides an OTS problem into two sub problems including an OPF problem and a prevention control problem according to a transient stable control mechanism disclosed by the EEAC, achieves an optimal economical adjustment scheme meeting transient safe and stable constraints on an OPF operation point based on a safe and stable mode, and leads the optimal economical adjustment scheme into an ...

AMIDODIAMINE CORROSION INHIBITORS

Methods for providing corrosion inhibition in conduits, containers, and wellbores penetrating subterranean formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibitor additive. In certain embodiments, the corrosion inhibitor additive comprises a compound comprising a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety. 2. The method of claim 1 , wherein X is selected from the group consisting of: a carboxylate claim 1 , a halide claim 1 , a sulfate claim 1 , an organic sulfonate claim 1 , a hydroxide claim 1 , a phosphate claim 1 , a borate claim 1 , and any combination thereof.3. The method of claim 1 , further comprising the step of introducing the corrosion inhibitor additive to the fluid.4. The method of claim 1 , wherein at least one of R claim 1 , R claim 1 , and Rcomprise a heteroatom.5. The method of claim 1 , wherein the metal surface comprises carbon steel.6. The method of claim 1 , wherein the corrosion inhibitor additive is present in an amount from about 25 ppm to about 500 ppm based on the volume of the fluid.7. The method of claim 1 , wherein the fluid has a pH of from about 4 to about 10.8. The method of claim 1 , wherein each of Rand Ris a Cto Chydrocarbyl group resulting from a reaction between an acrylate or a methacrylate and an amine.9. The method of claim 8 , wherein the amine is a synthetic primary or secondary amine selected from the group consisting of: butylamine claim 8 , hexylamine claim 8 , octylamine claim 8 , dodecylamine claim 8 , N-methyldodecylamine claim 8 , N-methyloctylamine claim 8 , didodecylamine claim 8 , and any combination thereof.10. The method of claim 8 , wherein the amine is a primary or secondary fatty amine derived from one or more fatty acids selected from the group consisting of: tallow claim 8 , corn oil claim 8 , canola oil claim 8 , coconut oil claim 8 , safflower oil claim 8 , sesame oil claim 8 , palm oil ...

Preparation method of nano calcium carbonate-starch composite for drilling fluid

The invention relates to a synthesis method of a nano calcium carbonate-starch composite, belonging to the temporary plugging/shielding technique of reservoir protection. Starch and succinyl oxide react in water phase environment under the catalysis of NaOH, nano calcium carbonate is added 1 to 1.5 hours after the reaction, and glacial acetic acid is used for neutralization. The nano calcium carbonate-starch composite is obtained through purification and vacuum drying. The method provided by the invention has the characteristics of reacting at normal pressure, simple production process, low reaction temperature of between 30 and 50 DEG C, and simpleness and convenience for a purification method due to the use of low-toxicity solvent; and the nano calcium carbonate-starch composite with high purity can be obtained.

Magnetic target magnetic moment inversion method based on improved L curve model function method

The invention belongs to the field of magnetic field intensity numerical calculation in marine geomagnetic field reconstruction technology research, and particularly relates to a magnetic target magnetic moment inversion method based on an improved L curve model function method. The method comprises the following steps: improving an L curve method for solving regularization parameters through a curvature formula; using a model function method to explicit the solving process; arranging to obtain an improved L curve model function method algorithm; and solving the magnetic moment of the magnetic measurement target. The stability of a magnetic moment result obtained by the Tikhonov regularization magnetic moment inversion method based on the improved L curve model function is relatively high, and the problem that the result of an inappropriate problem does not continuously depend on an initial value can be effectively solved; the problem of large error results caused by error fluctuation with ...

Optimal power flow implementation method considering transient security constraints

The invention belongs to the field of safe and economical operation of power systems, and provides an optimal power flow (OTS) implementation method considering transient security constraints, which is based on safe and stable quantitative analysis and optimization decision theory and method- extended equal-area criterion (EEAC), brings transient security of a system into a traditional optimal power flow (OPF) mode, uniformly coordinates and considers safety and economical efficiency of operation of the system, and provides decision support for safe and economical operation of the power system. The method divides an OTS problem into two sub problems including an OPF problem and a prevention control problem according to a transient stable control mechanism disclosed by the EEAC, achieves an optimal economical adjustment scheme meeting transient safe and stable constraints on an OPF operation point based on a safe and stable mode, and leads the optimal economical adjustment scheme into an ...

Double-headed hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

ADDITIVE TO DECREASE THE POUR POINT OF PARAFFIN INHIBITORS

Included are compositions, methods, and systems for producing and using winterized paraffin inhibitor solutions. An example composition comprises a paraffin inhibitor solution; and an additive comprising a first portion and a second portion; wherein the first portion is selected from the functional groups consisting of sulfo, phosphate, phosphonate, ester, carboxyl, hydroxyl, and any combination thereof; wherein the second portion is selected from the functional groups consisting of linear alkyl, branched alkyl, alkyl phenyl, ethoxylated branched alkyl, propoxylated branched alkyl, and any combination thereof. 1. A winterized paraffin inhibitor solution comprising:a paraffin inhibitor solution; andan additive comprising a first portion and a second portion; wherein the first portion is selected from the functional groups consisting of sulfo, phosphate, phosphonate, ester, carboxyl, hydroxyl, and any combination thereof; wherein the second portion is selected from the functional groups consisting of linear alkyl, branched alkyl, alkyl phenyl, ethoxylated branched alkyl, propoxylated branched alkyl, and any combination thereof.2. The winterized paraffin inhibitor solution of claim 1 , wherein the additive is selected from the group consisting of dodecylbenzenesulfonic acid claim 1 , methanesulfonic acid claim 1 , ethanesulfonic acid claim 1 , nonylphenol claim 1 , and any combination thereof.3. The winterized paraffin inhibitor solution of claim 1 , wherein the paraffin inhibitor solution comprises a paraffin inhibitor that is a solute of the winterized paraffin inhibitor solution.4. The winterized paraffin inhibitor solution of claim 1 , wherein the additive is present in the winterized paraffin inhibitor solution in a concentration in a range of from about 1% (w/w) to about 40% (w/w) of the paraffin inhibitor solution.5. The winterized paraffin inhibitor solution of claim 1 , wherein the paraffin inhibitor solution comprises a paraffin inhibitor that is a comb shape ...

Eaton brake protection device for oilfield drilling

The invention provides an Eaton brake protection device for oilfield drilling, which is characterized in that the air inlet end of an electromagnetic pneumatic valve is connected with a control air path air source, an air relay comprises two air inlets and an air outlet, the air outlet end of the electromagnetic pneumatic valve is connected with one of the air inlets of the air relay, and the other air inlet of the air relay is connected with a main air source; an air outlet of the relay is connected with the brake cylinder, the electric contact pressure gauge is connected with the cooling water pipeline, an outlet of the cooling water pipeline is connected with the brake cooling system, the electric contact pressure gauge, the intermediate relay KA1, the electromagnetic pneumatic valve and the 24V direct-current power supply form a series circuit, and a first normally open contact of the intermediate relay KA1 is connected with the electromagnetic pneumatic valve. The Eaton brake protection ...

Oil-in-water emulsion drilling fluid and preparation method thereof

The invention discloses an oil-in-water emulsion drilling fluid and a preparation method thereof. According to the oil-in-water emulsion drilling fluid disclosed by the invention, a base fluid is composed of 60-90 parts by volume of a water phase and 10-40 parts by volume of an oil base, wherein the base fluid is added with 0.5-4 parts by mass of bentonite, 0.1-0.5 part by mass of a pH regulator, 0.1-0.3 part by mass of a tackifier, 1-2 parts by mass of an inhibitor, 2-3 parts by mass of a filtrate reducer, 1-3 parts by mass of a blocking agent, 0.5-3.0 parts by mass of an emulsifier, 1-4 parts by mass of a lubricant and 0-710 parts by mass of weighted materials. The drilling fluid is wide in scope of application, and has characteristics of being good in stability, inhibition, lubricity and the like, is strong in high-temperature resistance, not only capable of meeting unbalanced drilling for a low-pressure exhaustion oil-gas layer with a formation pressure coefficient of about 1.0, but ...

Text image generation method based on implicated affine transformation

The invention discloses a text image generation method based on implicated affine transformation. The method comprises the following steps: (1) obtaining an embedded text code s through a pre-trained embedded text encoder E; (2) generating random noise z obeying standard normal distribution, and inputting the random noise z into a generator G to be deeply fused with the embedded text code s to obtain a generated image f; (3) respectively inputting the generated image f and a real image r corresponding to the embedded text code s into a discriminator D for scoring to obtain Sf and Sr; constructing a loss function lossD of the discriminator D, and optimizing the discriminator D by using a gradient descent method; (4) optimizing the generator G by using a gradient descent method; and (5) repeating the steps (1) to (4), and finally training to obtain a generator for generating a high-quality image. The text generation image generator for generating high-quality images can be obtained, and the ...

Clay-free low-density oil-based drilling fluid

The invention relates to drilling liquid for use in the drilling process of oil exploration wells and production wells and belongs to low-density oil-based drilling fluid. The drilling fluid overcomes the drawbacks of serious pollution and strong Jamin effects of the conventional oil-based drilling fluid in hypotonic and water sensitive reservoir strata. The drilling fluid is characterized by containing low-density base oil, oil thickener, oil swelling agent, oil dispersible particle calcium carbonate, calcium oxide and oil soluble high-temperature-resistance fluid loss additive. The drilling fluid does not contain any water phase, the breaking voltage of the drilling fluid is high, the viscosity of the drilling fluid is proper, and the filtration is small (all filtrate is oil). The drilling fluid has the characteristics of high electrical stability, high temperature resistance, high water, soil and salt pollution resistance, excellent emulsification effect at high temperature and the like ...

Preparation method and application of high-density solid-free weighting agent

The invention provides a preparation method and application of a high-density solid-free weighting agent, and the preparation method comprises the following steps: S1, dissolving a first soluble weighting material and a second soluble weighting material in a solvent, preferably water, to obtain a solution A; s2, adding a pH regulator into the solution A to obtain a solution B with the pH value of 8-9.5; s3, performing first heat treatment on the solution B to obtain a solution C; s4, cooling the solution C, and adding a tackifier, a deoxidant and a chelating agent into the cooled solution C to obtain a solution D; s5, carrying out second heat treatment on the solution D to obtain a solution E; s6, heating the solution E to remove a liquid phase to obtain a solid phase; and S7, sequentially drying and granulating the solid phase to obtain the high-density solid-free weighting agent. The density of the obtained weighting agent can reach 1.715 g/cm < 3 >; the temperature resistance reaches ...

High temperature hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a low-dosage hydrate inhibitor additive into a fluid, wherein the low-dosage hydrate inhibitor additive comprises a quaternary or tertiary ammonium cation moiety, a lipophilic tail, and a sulfonate anion moiety; and exposing the low-dosage hydrate inhibitor additive to a temperature above about 200° F.

Full text retrieval method for structured data and unstructured data

The invention relates to a full text retrieval method for structured data and unstructured data. In a normal retrieval technology, the structured data is retrieved according to fields, corresponding retrieval is performed under a corresponding service module, and a retrieval result has significance only when browsed under the corresponding service module; and the unstructured data is retrieved according to a full text, but is difficultly associated with data of a service system. When the full text retrieval is performed, query conditions are transmitted into a retrieval engine; and the engine retrieves according to the conditions, wherein the retrieval result simultaneously comprises the structured data and the unstructured data, and the retrieval result can be displayed and processed according to a service type and a processing mode which are marked in an index. By the method, the problems that different data are required to be retrieved from an information system by using different query ...

Pallet fork locking device of combined bucket

A pallet fork locking device of a combined bucket comprises a bucket and a pallet fork, wherein the pallet fork is hinged at the top part of the bucket, the pallet fork is in contact with the back surface of the bucket after being turned, two parallel mounting plates are arranged on the back surface of the bucket, a U-shaped bending plate is arranged between the two mounting plates, the distance between the two mounting plates is larger than the width of the bucket, and the bottom part of the bending plate deviates towards the back surface of the bucket. The pallet fork locking device of the combined bucket adopts the structure of the bending plate to play a role in absorbing shock and energy, so that the swing problem and the noise problem, produced after the pallet fork is put away, are effectively solved.

Glass wool crushing machine device

The invention discloses a glass wool crushing machine device which comprises a wool crushing machine box 1, wool crushing gears 2, wool crushing rollers 3, roller bearings 4, motors 5 and belts 6. The glass wool crushing machine device is characterized in that the wool crushing machine box 1 is used for carrying the wool crushing rollers 3, the wool crushing gears 2 are arranged on the outer wall of the wool crushing rollers 3, the roller bearings 4 are connected with the motors 5 through the belts 6, the belts 6 are made to drive the wool crushing rollers 3 to rotate reversely and relatively in the wool crushing machine box 1 by changing the frequency of the motors 5, and the glass wool crushing and tearing effect is achieved. According to the glass wool crushing machine device, the problems that in the prior art, the glass wool crushing effect is poor, and the glass wool crushing particles are big are solved, the number of the types of wool capable of being crushed is increased, the crushing ...

Ration is charge device and sewage treatment plant at uniform velocity

The utility model discloses a ration is charge device and sewage treatment plant at uniform velocity relates to the sewage treatment device field, wherein the ration at the uniform velocity charge device include: support, hopper, material feeding unit and power, the hopper with material feeding unit connects, material feeding unit sets up on the support, material feeding unit with the power electricity is connected, wherein, material feeding unit is spiral oar axle material feeding unit. Adopt above -mentioned technical scheme, owing to adopt spiral oar axle material feeding unit for not onlyautomatic assurance sewage treatment device's work efficiency reaches the best to realizing with the medicine process that the dose with the medicine can also be controlled to the while, more can alsocontrol the speed with the medicine, and sewage treatment is effectual.

Low back pressure grain catcher's filter element

The utility model discloses a low back pressure grain catcher's filter element, including the filter element body, the filter element body is convoluteed by the same wave form metal sheet of the number of piles and alloy fiber felt alternate coincide in proper order and is formed, crest passageway and trough passageway have been seted up on the wave form metal sheet respectively, the crest plate washer is installed to crest passageway front end, the trough plate washer is installed to trough passageway rear end, the height of crest plate washer and highly equalling of crest, the height of trough plate washer and highly equalling of trough. Thereby reach filtration efficiency height, the exhaust backpressure is low, the recovery time is short effect.

Self-plugging releasing temperature resistant temporary plugging agent used for water-based drilling fluid and preparation method thereof

The invention provides a self-plugging releasing temperature resistant temporary plugging agent used for water-based drilling fluid, the self-plugging releasing temperature resistant temporary plugging agent comprises nano calcium carbonate and a product which is obtained by reacting starch, alkali metal hydroxide, halogenated organic acid, carbonate, a hydrophobic modification agent and alcohol with water. The invention also provides a preparation method of the self-plugging releasing temperature resistant temporary plugging agent used for the water-based drilling fluid, and the self-plugging releasing temperature resistant temporary plugging agent used for the water-based drilling fluid can be obtained by proportionally adding components into a kneading machine for kneading. The self-plugging releasing temperature resistant temporary plugging agent has strong high temperature resistance, and can resist the temperature up to 140 DEG C; and the self-plugging releasing temperature resistant ...

HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety. 2. The method of wherein X is selected from the group consisting of: a carboxylate claim 1 , a halide claim 1 , a sulfate claim 1 , an organic sulfonate claim 1 , a hydroxide claim 1 , and any combination thereof.3. The method of wherein the fluid comprises at least one component selected from the group consisting of: water claim 1 , a gas claim 1 , a liquid hydrocarbon claim 1 , and any combination thereof.4. The method of wherein the hydrate inhibitor composition is introduced into the fluid through a conduit or an injection point in fluid communication with a wellbore in which the fluid resides.5. The method of wherein the hydrate inhibitor composition is introduced into a wellbore penetrating at least a portion of a subterranean formation through which the fluid is flowing.6. The method of wherein the hydrate inhibitor composition is introduced into a conduit through which the fluid is flowing.7. The method of wherein the fluid comprises water and has a water cut of about 55% or more.8. The method of wherein the fluid comprises water and the hydrate inhibitor composition is introduced into the fluid in an amount such that the compound is present in the fluid in an amount from about 0.1% to about 10% by volume based on a water cut of the fluid.9. The method of wherein each of Rand Ris a Cto Chydrocarbon chain resulting from a reaction between an acrylate or a methacrylate and an amine claim 1 , the amine being selected from the group consisting of:a synthetic primary or secondary amine selected from the group consisting of: butylamine, hexylamine, octylamine, dodecylamine, N-methyldodecylamine, N- ...

DOUBLE-HEADED HYDRATE INHIBITORS AND METHODS OF USE

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties. 2. The method of wherein each of X and Yis independently selected from the group consisting of: a carboxylate claim 1 , a halide claim 1 , a sulfate claim 1 , an organic sulfonate claim 1 , a hydroxide claim 1 , and any combination thereof.3. The method of wherein the fluid comprises at least one component selected from the group consisting of: water claim 1 , a gas claim 1 , a liquid hydrocarbon claim 1 , and any combination thereof.4. The method of wherein the hydrate inhibitor composition is introduced into the fluid through a conduit or an injection point in fluid communication with a wellbore in which the fluid resides.5. The method of wherein the hydrate inhibitor composition is introduced into a wellbore penetrating at least a portion of a subterranean formation through which the fluid is flowing.6. The method of wherein the hydrate inhibitor composition is introduced into a conduit through which the fluid is flowing.7. The method of wherein the fluid comprises water and has a water cut of about 50% or more.8. The method of wherein the fluid comprises water and the hydrate inhibitor composition is introduced into the fluid in an amount such that the compound is present in the fluid in an amount from about 0.1% to about 10% by volume based on the water cut of the fluid.9. The method of wherein Ris a Cto Chydrocarbon chain resulting from a reaction between an acrylate or a methacrylate and an amine claim 1 , the amine being selected from the group consisting of:a synthetic primary amine selected from the group consisting of: butylamine, amine, hexylamine, octylamine, dodecylamine, and any ...

Comb polymer, method of preparing the same, and use thereof

The present disclosure discloses a comb polymer or a salt thereof, wherein the structural formula of the comb polymer containing the following constitutional units. 2. The comb polymer according to claim 1 , wherein the viscosity average molecular weight of the comb polymer is in the range from 10 claim 1 ,000 to 500 claim 1 ,000 claim 1 , preferably 10 claim 1 ,000 to 200 claim 1 ,000.3. The comb polymer according to claim 1 , wherein R-Rand R-R claim 1 , identical to or different from one another respectively claim 1 , can be independently selected from a group consisting of hydrogen and C-Calkyls;{'sub': '7', 'wherein Ris selected from a group consisting of hydrogen and alkyl sulfonic acids each containing 1 to 4 carbon atoms; and'}{'sub': 8', '1', '4, 'wherein Ris selected from a group consisting of hydrogen, C-Calkyls, and carboxylic acids each containing 1 to 4 carbon atoms, with m being an integer in the range from 10 to 110,'}{'sub': 2', '3', '5', '6', '9', '10', '1', '4', '8', '7, 'preferably, R, R, R, R, R, and Rall being hydrogen, and R, R, R, identical to or different from one another, being selected from a group consisting of hydrogen and methyl, and Rbeing selected from a group consisting of hydrogen and methylpropane sulfonic acid.'}4. A method for preparing the comb polymer or the salt thereof according to claim 1 , comprising the steps of:mixing an aqueous solution of a first reactant, a second reactant, and a third reactant with an emulsifier and a nonpolar dispersion medium; andperforming inverse emulsion polymerization in the presence of an initiator and an optional catalyst,wherein the first reactant, the second reactant, and the third reactant are respectively an unsaturated acid, an unsaturated amide or a derivative thereof, and an unsaturated acid ester.5. The method according to claim 4 , wherein the molar ratio of the first reactant to the second reactant to the third reactant is in the range from (20-50):(9-49):(1-60).6. The method ...

ANTI-AGGLOMERANT HYDRATE INHIBITORS AND METHOD OF USE

Compositions and methods of using such compositions to inhibit the formation of gas hydrate agglomerates are provided. In certain embodiments, the methods include: contacting a fluid with a hydrate inhibitor composition that includes at least one compound having the structural formula (I) wherein Ris hydrogen or any Cto Chydrocarbon chain; each of Rand Ris independently a Cto Chydrocarbon chain; Ris hydrogen, a Cto Chydrocarbon chain, or —CH—CH(OH)—R; Ris a Cto Calkyl chain or a Cto Calkenyl chain; X is a counter anion; and n is an integer from 1 to 8. 2. The method of wherein X is selected from the group consisting of: a carboxylate claim 1 , a halide claim 1 , a sulfate claim 1 , a sulfonate claim 1 , a hydroxide claim 1 , a phosphonate claim 1 , and/or any combination thereof.3. The method of wherein the fluid comprises at least one component selected from the group consisting of: water claim 1 , a gas claim 1 , a liquid hydrocarbon claim 1 , and any combination thereof.4. The method of wherein the hydrate inhibitor composition is introduced into the fluid through a conduit or an injection point in fluid communication with a wellbore in which the fluid resides.5. The method of wherein the hydrate inhibitor composition is introduced into a wellbore penetrating at least a portion of a subterranean formation through which the fluid is flowing.6. The method of wherein the hydrate inhibitor composition is introduced into a conduit through which the fluid is flowing.7. The method of wherein the fluid comprises water and has a water cut of about 0.1% or more.8. The method of wherein the fluid comprises water and the hydrate inhibitor composition is provided in an amount such that the compound is present in the fluid in an amount from about 0.1% to about 10% by volume based on the water cut of the fluid.9. The method of wherein Ris any Cto Calkyl chain or any Cto Calkenyl chain resulting from a reaction between an 1 claim 1 ,2-epoxyalkane and a dialkylaminoalkylamine.10. ...

FORWARD EIGHT-BAR LINKAGE WORKING DEVICE FOR LOADING END OF A BACKHOE LOADER

A forward eight-bar linkage working device for the loading end of a backhoe loader comprises a front frame, a movable boom, a rotatable bucket oil cylinder, a movable boom oil cylinder, a rotatable bucket lever, a rotatable bucket pull link, a movable boom pull rod, a movable boom lever and a bucket; and the forward eight-bar linkage mechanism enables a working device of the loading end to achieve a larger breakout force in the case of the same engine power, and makes the axle load distribution ratio of the machine more reasonable, enhancing the operation efficiency and the operation balance. 1. A forward eight-bar linkage working device for the loading end of a backhoe loader , comprising a front frame , a movable boom , a rotatable bucket oil cylinder , a movable boom oil cylinder , a rotatable bucket lever , a rotatable bucket pull link , a movable boom pull rod , a movable boom lever and a bucket , wherein said frame is hinged with one end of the boom at a point A , hinged with one end of the movable boom pull rod at a point C and hinged with one end of the movable boom oil cylinder at a point E respectively , the other end of said movable boom is hinged with the bucket at a point B , the other end of said movable boom pull rod is hinged with one end of the movable boom lever at a point D , and the other end of said movable boom oil cylinder is hinged at a point F in the middle of the boom; the middle of said movable boom lever is hinged with the movable boom at a point G which is located between the two points A and F; the other end of said movable boom lever is hinged with one end of the rotatable bucket oil cylinder at a point H , the other end of the rotatable bucket oil cylinder is hinged with one end of the rotatable bucket lever at a point I , and the other end of the rotatable bucket lever is hinged with the bucket at a point J; both ends of said rotatable bucket pull link are hinged with the rotatable bucket lever and the movable boom at points K and L ...

Additive to decrease the pour point of paraffin inhibitors

Included are compositions, methods, and systems for producing and using winterized paraffin inhibitor solutions. An example composition comprises a paraffin inhibitor solution; and an additive comprising a first portion and a second portion; wherein the first portion is selected from the functional groups consisting of sulfo, phosphate, phosphonate, ester, carboxyl, hydroxyl, and any combination thereof; wherein the second portion is selected from the functional groups consisting of linear alkyl, branched alkyl, alkyl phenyl, ethoxylated branched alkyl, propoxylated branched alkyl, and any combination thereof.

HYDRATE INHIBITORY METHOD AND COMPOSITION

São fornecidos composições e métodos de uso de tais composições para, por exemplo, inibir a formação de aglomerados de hidrato de gás. Numa modalidade, os métodos compreendem: introduzir uma composição inibidora de hidrato compreendendo um composto num fluido, em que o composto compreende duas frações catiônicas hidrofílicas, uma cauda lipofílica e duas frações de ligação. Compositions and methods of using such compositions to, for example, inhibit the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate-inhibiting composition comprising a compound into a fluid, wherein the compound comprises two hydrophilic cationic moieties, a lipophilic tail, and two binding moieties.

Double-headed hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.

High temperature hydrate inhibitors and methods of use

Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a low-dosage hydrate inhibitor additive into a fluid, wherein the low- dosage hydrate inhibitor additive comprises a quaternary or tertiary ammonium cation moiety, a lipophilic tail, and a sulfonate anion moiety; and exposing the low-dosage hydrate inhibitor additive to a temperature above about 200°F.

Forward rotation eight-link operating device at loading end of excavator-loader

A forward eight-bar linkage working device for the loading end of a backhoe loader comprises a front frame, a movable boom, a rotatable bucket oil cylinder, a movable boom oil cylinder, a rotatable bucket lever, a rotatable bucket pull link, a movable boom pull rod, a movable boom lever and a bucket; and the forward eight-bar linkage mechanism enables a working device of the loading end to achieve a larger breakout force in the case of the same engine power, and makes the axle load distribution ratio of the machine more reasonable, enhancing the operation efficiency and the operation balance.

High temperature hydrate inhibitors and methods of use

Digital camera and manual focus method thereof

Digital camera and manual focus method thereof

Microemulsion completion fluid and use thereof.

The present disclosure discloses a microemulsion completion fluid, comprising an oil phase, an aqueous phase, a surfactant, a cosurfactant, a salt, and a cleaning agent, wherein the cleaning agent is selected from a group consisting of oxidants and bio-enzymes. The microemulsion completion fluid according to the present disclosure has excellent comprehensive performance, and is advantageous in relieving formation damage caused by a drilling fluid, especially by a water-based drilling fluid, so as to improve yield of crude oil in production. The completion fluid according to the present disclosure has broad application prospects.

corrosion inhibition method

Métodos para fornecer inibição de corrosão em condutos, contêineres e furos de poços que penetram em formações subterrâneas são fornecidos. Em algumas modalidades, os métodos compreendem contatar uma superfície metálica com um fluido compreendendo um aditivo inibidor de corrosão. Em certas modalidades, o aditivo inibidor de corrosão compreende um composto compreendendo uma fração de cátion hidrofóbico, uma ou mais caudas lipofílicas e uma fração de ligação. Methods to provide corrosion inhibition in pipelines, containers and well holes that penetrate underground formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibiting additive. In certain embodiments, the corrosion inhibiting additive comprises a compound comprising a hydrophobic cation fraction, one or more lipophilic tails and a binding fraction.

Anti agglomerant hydrate inhibitors and method of use

‘ Compositions and methods of using such compositions to inhibit the formation of gas i hydrate agglomerates are provided. In certain embodiments, the methods include: contacting a l fluid with a hydrate inhibitor composition that includes at least one compound having the i structural formula: ì R - 5 _ * ®/ Ra ‚ o tE OH R4 Ra wherein R; is hydrogen or any C1 to C8 hydrocarbon chain; each of R2 and R3 is independently a C1 to Cg hydrocarbon chain; R4 is hydrogen, a C1 to C20 hydrocarbon chain, or —CH2——CH(OH)~R5; R5 is a C1 to C50 alkyl chain or a C1 to C50 alkenyl chain; X“ is a counter anion; and n is an integer from 1 to 8. t 2023658 Copy provided by USPTO from the IFW Image Database on 04—12—20] 9 ;

Low dosage hydrate inhibitor

Método para inibição de corrosão

métodos para fornecer inibição de corrosão em condutos, contêineres e furos de poços que penetram em formações subterrâneas são fornecidos. em algumas modalidades, os métodos compreendem contatar uma superfície metálica com um fluido compreendendo um aditivo inibidor de corrosão. em certas modalidades, o aditivo inibidor de corrosão compreende um composto compreendendo uma fração de cátion hidrofóbico, uma ou mais caudas lipofílicas e uma fração de ligação.

Thermoplastic polyurethanes with high temperature stability and uses thereof

The instant disclosure related to a thermoplastic polyurethane composition (TPU) comprising the reaction product of an aromatic polyisocyanate and a diol mixture of a first and second diol where the second diol is at least 15 wt % of the diol mixture. The TPU reaction product further has a hard block content of at least 30 wt % based on the total weight of the TPU reaction product. The TPU compositions disclosed herein have high temperature stability and may be used in applications where high temperature stability is required, such as coating wires and cables or in seals and gaskets.

Anti-agglomerant hydrate inhibitors and method of use

Compositions and methods of using such compositions to inhibit the formation of gas hydrate agglomerates are provided. In certain embodiments, the methods include: contacting a fluid with a hydrate inhibitor composition that includes at least one compound having the structural formula (I) wherein R1 is hydrogen or any C1 to C8 hydrocarbon chain; each of R2 and R3 is independently a C1 to C8 hydrocarbon chain; R4 is hydrogen, a C1 to C20 hydrocarbon chain, or —CH2—CH(OH)—R5; R5 is a C1 to C50 alkyl chain or a C1 to C50 alkenyl chain; X− is a counter anion; and n is an integer from 1 to 8.

Dual cation hydrate inhibitors

Dual cation hydrate inhibitor compositions and methods of using such compositions to, for example, inhibit the formation of gas hydrate agglomerates are provided. In some embodiments, such methods include introducing a hydrate inhibitor composition into a fluid, wherein the hydrate inhibitor composition includes at least one compound having the structural formula: wherein each of R1, R2 and R3 is independently a C1 to C6 hydrocarbon chain, wherein R4 is selected from the group consisting of hydrogen and any C1 to C50 hydrocarbon chain, wherein each of R5 and R6 is independently selected from the group consisting of hydrogen and a C1 to C50 hydrocarbon chain, wherein X_ and Y_ are counter anions, and wherein each of a and b is independently an integer from 1 to 10.

Método e composição de inibidor de hidrato

método e composição de inibidor de hidrato. são fornecidas composições de inibidor de hidrato de cátion duplo e métodos de uso de tais composições para, por exemplo, inibir a formação de aglomerados de hidrato de gás. em algumas modalidades, tais métodos incluem introduzir uma composição de inibidor de hidrato em um fluido, em que a composição de inibidor de hidrato inclui pelo menos um composto com a fórmula estrutural: em que cada um de r1, r2, e r3 é independentemente uma cadeia de hidrocarboneto c1 a c6 , em que r4 é selecionado do grupo que consiste em hidrogênio e qualquer cadeia de hidrocarboneto c1 a c50 , em que cada um de r5 e r6 é independentemente selecionado do grupo que consiste em hidrogênio e qualquer cadeia de hidrocarboneto c1 a c50 , em que x? e y? são contra-ânions, e em que cada um de a e b é, independentemente, um número inteiro de 1 a 10.

Low dosage hydrate inhibitor

A low dosage hydrate inhibitor blend comprising a cationic surfactant and a co- surfactant. The cationic surfactant has the structural formula: wherein: R1 is an alkyl group or alkenyl group having from 5 to 22 carbon atoms, R2 and R3 are alkyl groups having from 1 to 6 carbon atoms, R4 is a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, and X- is selected from the group of a carboxylate, an acrylate, a methacrylate, a halide, a phosphonate, a sulfate, a sulfonate, a hydroxide, a carbonate, or any combination thereof; and The co-surfactant is present in the inhibitor blend in an amount of no greater than about 10 percent by weight based on the total weight of the blend.

Sweet potato rotary tillage, ridging, fertilization and transplanting integrated machine

The invention relates to an integrated machine for rotary tillage, ridging, fertilization and transplanting of potatoes, comprising: a frame and seats, a traction bracket for connecting with a tractor is arranged in the middle of the front part of the frame; a rotary tillage device for loosening soil, arranged below the traction bracket; ridging devices, respectively arranged on both sides of the rotary tillage device; the two sides of the middle lower part of the frame are respectively provided with ditching devices for ditching planting ditches on ridges; transplanting devices for transplanting potato seedlings into ditches, respectively arranged at both sides of the rear part of the frame; traveling wheels for traveling between ridges and soil covering wheels for covering soil after potato seedlings are transplanted, respectively arranged on both sides of the rear part of the frame; a seedling tray for bearing potato seedlings.

Low dosage hydrate inhibitor

Inhibiteur d’hydrates à faible dose

Un mélange d’inhibiteurs d’hydrates à faible dose comprend un tensioactif cationique et un co-tensioactif. Le tensioactif cationique a la formule structurelle : dans laquelle : R1 est un groupe alkyle ou un groupe alcényle ayant de 5 à 22 atomes de carbone, R2 et R3 sont des groupes alkyle ayant de 1 à 6 atomes de carbone, R4 est un atome d’hydrogène ou un groupe alkyle ayant de 1 à 6 atomes de carbone et X- est choisi dans le groupe constitué par un carboxylate, un acrylate, un méthacrylate, un halogénure, un phosphonate, un sulfate, un sulfonate, un hydroxyde, un carbonate ou toute combinaison de ceux-ci ; et le co-tensioactif est présent dans le mélange d’inhibiteurs en une quantité dans la gamme d'environ 0,01% en poids à environ 10% en poids sur la base du poids total du mélange.

Power saving method used in image capture device

Anti agglomerant hydrate inhibitors and method of use

Compositions and methods of using such compositions to inhibit the formation of gas hydrate agglomerates are provided. In certain embodiments, the methods include: contacting a fluid with a hydrate inhibitor composition that includes at least one compound having the structural formula: 5 (9/ e WAN N ___ X l “ \ R2 OH R4 R3 wherein R1 is hydrogen or any C1 to Cs hydrocarbon chain; each of R2 and R3 is independently a C1 to Cg hydrocarbon chain; R4 is hydrogen, a C1 to C20 hydrocarbon chain, or —CH2—CH(OH)—R5; R5 is a C1 to C50 alkyl chain or a C1 to C50 alkenyl chain; X‘ is a counter anion; and n is an integer from 1 to 8. ;

Amidodiamine corrosion inhibitors

Methods for providing corrosion inhibition in conduits, containers, and wellbores penetrating subterranean formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibitor additive. In certain embodiments, the corrosion inhibitor additive comprises a compound comprising a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

Amidodiamine corrosion inhibitors

Methods for providing corrosion inhibition in conduits, containers, and wellbores penetrating subterranean formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibitor additive. In certain embodiments, the corrosion inhibitor additive comprises a compound comprising a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.

Inhibidores de corrosión de amidodiamina

Se proporcionan métodos para la inhibición de la corrosión en conductos, recipientes y pozos que penetran formaciones subterráneas. En algunas modalidades, los métodos comprenden poner en contacto una superficie metálica con un fluido que comprende un aditivo inhibidor de corrosión. En determinadas modalidades, el aditivo inhibidor de corrosión comprende un compuesto que comprende un resto catiónico hidrófóbico, una o más colas lipofílicas y un resto de enlace.

Structure of tableware

mistura de inibidor de hidrato de baixa dosagem, métodos de tratamento de um fluido de poço, e de tratamento de um fluido de poço associado a um sistema de produção de poço de óleo e gás

MISTURA DE INIBIDOR DE HIDRATO DE BAIXA DOSAGEM, MÉTODOS DE TRATAMENTO DE UM FLUIDO DE POÇO, E DE TRATAMENTO DE UM FLUIDO DE POÇO ASSOCIADO A UM SISTEMA DE PRODUÇÃO DE POÇO DE ÓLEO E GÁS. Uma mistura de inibidor de hidrato de baixa dosagem que compreende um tensoativo catiônico e um co-tensoativo. O tensoativo catiônico tem a fórmula estrutural: em que: R1 é um grupo alquila ou grupo alquenila tendo de 5 a 22 átomos de carbono, R2 e R3 são grupos alquila tendo de 1 a 6 átomos de carbono, R4 é um átomo de hidrogênio ou um grupo alquila tendo de 1 a 6 átomos de carbono, e X- é selecionado a partir do grupo de um carboxilato, um acrilato, um metacrilato, um haleto, um fosfonato, um sulfato, um sulfonato, um hidróxido, um carbonato ou qualquer combinação dos mesmos; e O co-tensoativo está presente na mistura do inibidor em uma quantidade não superior a cerca de 10 por cento em peso com base no peso total da mistura.

Low dosage hydrate inhibitor

A low dosage hydrate inhibitor blend comprising a cationic surfactant and a co- surfactant. The cationic surfactant has the structural formula: wherein: R1 is an alkyl group or alkenyl group having from 5 to 22 carbon atoms, R2 and R3 are alkyl groups having from 1 to 6 carbon atoms, R4 is a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, and X- is selected from the group of a carboxylate, an acrylate, a methacrylate, a halide, a phosphonate, a sulfate, a sulfonate, a hydroxide, a carbonate, or any combination thereof; and The co-surfactant is present in the inhibitor blend in an amount of no greater than about 10 percent by weight based on the total weight of the blend.

High temperature resisting temporary plugging agent with self deplugging for water-based drilling fluid and preparing method thereof.

Low dosage hydrate inhibitor

A low dosage hydrate inhibitor blend comprising a cationic surfactant and a co-surfactant. The cationic surfactant has the structural formula: wherein: R1 is an alkyl group or alkenyl group having from 5 to 22 carbon atoms, R2 and R3 are alkyl groups having from 1 to 6 carbon atoms, R4 is a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, and X— is selected from the group of a carboxylate, an acrylate, a methacrylate, a halide, a phosphonate, a sulfate, a sulfonate, a hydroxide, a carbonate, or any combination thereof; and The co-surfactant is present in the inhibitor blend in an amount of no greater than about 10 percent by weight based on the total weight of the blend.

Melt-spun thermoplastic polyurethane fiber

A melt-spun thermoplastic polyurethane fiber is provided. The melt-spun thermoplastic polyurethane fiber provides elastic properties and exhibits chemical resistance.