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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 31. Отображено 31.
04-03-2015 дата публикации

Acquisition method of stratum parameters of low pressure coal bed methane basin

Номер: CN104389595A
Автор: LIU TONGJI, CAO YUNXING, CAO YONGHENG, FENG PEIWEN, ZHANG DAQING, SHI FEN, ZHOU DAN, JIA MENG, TIAN LIN
Принадлежит:

The invention relates to an acquisition method of stratum parameters of a low pressure coal bed methane basin. The acquisition method of the stratum parameters of the low pressure coal bed methane basin mainly includes following steps: keeping a well open for 24 hours after a test string descends the well so as to enable bottom hole pressure to tend to new balance; performing a micro fracture experiment before injection; using a high pressure pump with a constant pressure and constant current inlet to perform the injection; using a computer to continuously collect data in high density in data collection; using a high accuracy storage type electronic manometer in an underground monitoring system to monitor underground pressure and temperature. The acquisition method of the stratum parameters of the low pressure coal bed methane basin can accurately and fully acquire the stratum parameters, and is key for knowing a reservoir stratum, and performing reservoir stratum assessment and production ...

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Номер записи: 1
22-06-2011 дата публикации

On-site sealed sampling device for coal bed gas

Номер: CN0102103041A
Автор: YUGUI ZHANG, ZHIQI GUO, YIMIN ZHANG, ZIMIN ZHANG, YUNXING CAO, LIANGXIAN LI, ZHANG YUGUI, GUO ZHIQI, ZHANG YIMIN, ZHANG ZIMIN, CAO YUNXING, LI LIANGXIAN
Принадлежит:

The invention discloses an on-site sealed sampling device for coal bed gas. The device comprises a hollow long rod piece, wherein the outer circumference of the long rod piece is provided with a spiral convex edge; a coal storage cabin, a closed cabin, a transmission cabin and a power and control cabin are arranged in the long rod piece from front to back respectively; the closed cabin is provided with a coal inlet; a reciprocating push and pull mechanism is arranged in the transmission cabin; a micro power speed reducing motor for providing power for the reciprocating push and pull mechanism is arranged in the power and control cabin; the front end of the reciprocating push and pull mechanism is in transmission connection with a piston sliding sleeve device for opening and closing the coal inlet; and the front end of the coal storage cabin is provided with a gas resolution hole. The device is mainly used for a sampling link before the process of measuring the content of the gas in a laboratory ...

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Номер записи: 2
27-05-2015 дата публикации

Method and device for testing energy change and permeability of nitrogen fracturing coal seam

Номер: CN104655806A
Автор: NI XIAOMING, LI ZHEYUAN, SUN XIAOTING, CAO YUNXING, HAN YING
Принадлежит:

The invention relates to a method and a device for testing the energy change and the permeability of a nitrogen fracturing coal seam. The device comprises a reservoir environment simulation system, a power fracturing system, a data display system and a testing system, wherein the reservoir environment simulation system comprises an axial stress loading system and a confining pressure loading system; the reservoir environment simulation system can be used for truly simulating the stress state of the coal seam; the power fracturing system can be used for pumping gas into the testing system so as to fracture coal samples; the testing system comprises a plurality of coal sample tanks, and the plurality of coal sample tanks are selected to be connected or closed according to the situation, so that the plurality of coal samples can be tested; the method comprises the steps of detecting the air tightness, arranging the coal samples, connecting and fixing the device, carrying out reservoir environment ...

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Номер записи: 3
11-03-2015 дата публикации

Hypotonic coal seam region mineshaft gas phase fracturing and rapid coal uncovering method and hypotonic coal seam region mineshaft gas phase fracturing and rapid coal uncovering device

Номер: CN104405434A
Автор: FU GUOTING, CAO YUNXING, ZHAO GANGFEI, WANG JIANTAO, GUO JIRONG, XU JILIAN, GUO DETAO, ZHANG JUNSHENG, SUN BINGZHOU, CUI HONGWEI, QIAO LEI, JIANG YONG, JIA JIAN
Принадлежит:

The invention discloses a hypotonic coal seam vertical shaft gas phase fracturing and rapid coal uncovering method and hypotonic coal seam vertical shaft gas phase fracturing and rapid coal uncovering equipment. The method mainly comprises the following steps: when a mineshaft is excavated to a position which is 7m away from a normal direction of a roof top, starting forming gas extraction boreholes at an interval of a 70cm regular hexagon according to the section size of the mineshaft; forming fracturing holes in the centers of the regular hexagons, wherein an SGZX-3 drilling machine, a drill stem with the diameter of phi 50mm and a drill bit with the diameter of phi 94mm are adopted in drilling construction; sealing the boreholes, namely adopting PVC (Polyvinyl Chloride) pipes with the pipe diameter of 50mm as extraction pips in the boreholes after drilling construction is finished, hermetically connecting every two pipes with a sealant, and sealing the boreholes with airbags and seal ...

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Номер записи: 4
01-08-2023 дата публикации

Coal mine dynamic disaster early warning system and method based on ground micro-earthquake monitoring

Номер: CN116517636A
Автор: TIAN LIN, WANG MENGLONG, CAO YUNXING, QI YUFEI, WU ZHAOXU, SUN MINGYUE, WU JINGHAO
Принадлежит:

The invention discloses a coal mine dynamic disaster early warning system and method based on ground micro-earthquake monitoring. The coal mine dynamic disaster early warning system based on ground micro-earthquake monitoring comprises a high-precision micro-earthquake monitoring station network, a high-speed network transmission module, an intelligent identification and central processing system and an early warning terminal. The early warning method is based on a comprehensive evaluation model of six parameters including the frequency gradient, the signal frequency spectrum gradient, the seismic moment gradient, the stress drop gradient, the event energy gradient and the lateral pressure ratio gradient of effective micro-seismic events, the possible disaster degree and the early warning reliability can be predicted, and an alarm is given out through sound and color changes. And meanwhile, a layer section where the disaster is predicted to occur is displayed. The system and method have ...

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Номер записи: 5
25-03-2015 дата публикации

Rubber mat buffering device of gas phase fracturing device

Номер: CN104455147A
Автор: ZHAO GANGFEI, CAO YUNXING, GUO DETAO, GUO JIRONG, ZHANG JUNSHENG, SUN BAOXU, XU JILIAN, JIANG YONG, JIA JIAN, HE JIAN, WANG HUITANG, LI ANHONG, ZHAO JINGANG, ZHAO JIAN, SUN WENZHONG
Принадлежит:

This invention relates to a rubber mat buffering device of a gas phase fracturing device. The rubber mat buffering devices are used for flexibly connecting gas phase fracturing pipes, and the gas phase fracturing pipes can be movably connected into a whole through the rubber mat buffering devices. When the gas phase fracturing pipes are fractured, released high-energy gas impacting waves will apply powerful recoil force to a gas phase fracturing pipe assembly. Due to the connecting devices, the powerful recoil force can be weakened step by step after being buffered through the buffering devices on the fracturing pipes, and the finally the effect for buffering the recoil force is achieved.

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Номер записи: 6
04-03-2015 дата публикации

Deep hole gas phase fracturing pipe multi-stage connecting device

Номер: CN104389529A
Автор: CAO YUNXING, ZHANG JUNSHENG, TIAN LIN, CAO YONGHENG, SHI FEN, CUI HONGWEI, SU HENG, LIU YANWEI
Принадлежит:

The invention discloses a deep hole gas phase fracturing pipe multi-stage connecting device. The device comprises two or more than two gas phase fracturing pipes, a connecting buffer, a hole sealing device, a push rod and a fixing device; the connecting buffer connects a plurality of fracturing pipes together; the hole sealing device comprises one to three sections; the fracturing pipe at the most front end is connected with the tail end of the hole sealing device; the front end of the hole sealing device is connected with the push rod; the push rod is connected with the fixing device; a pressure testing instrument is arranged in the hole sealing device. According to the device, the fracturing pipes in different models can be fractured in coal rocks under the different geological conditions, the device is high in adaptability, and the pressure in a borehole can be monitored.

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Номер записи: 7
01-04-2015 дата публикации

Coal-bed gas aging well production capacity increasing method

Номер: CN104481462A
Автор: ZHOU WENHAO, CAO YUNXING, JIA MENG, LIU TONGJI, FENG PEIWEN, ZHOU DAN, CAO YONGHENG, TIAN LIN
Принадлежит:

The invention discloses a coal-bed gas aging well production capacity increasing method. The method includes the steps: (a) preparing liquid nitrogen needing to be pumped into a coal bed according to a fracturing design scale; (b) connecting a coal-bed gas wellhead, a liquid nitrogen pump truck and relevant pipeline valves; (c) testing pressure according to fracturing design requirements, and avoiding piercing of a high-pressure manifold; (d) pumping the nitrogen according to the fracturing design requirements by the liquid nitrogen pump truck and preventing the discharge temperature of the nitrogen from being lower than 15 DEG C; (e) immediately opening a well for gushing after fracturing, and sweeping blocked cracks by compressed energy of the nitrogen. The coal-bed gas aging well can be rapidly modified, a reservoir is almost not polluted, and the infiltration capacity of the reservoir is increased. An excellent technical direction is provided for coal-bed gas aging well modification ...

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Номер записи: 8
01-04-2015 дата публикации

Active water-nitrogen accompanied injection composite fracturing method for permeability enhancement of coal-bed gas well

Номер: CN104481493A
Автор: CAO YUNXING, ZHOU DAN, CAO YONGHENG, SHI FEN, JIA MENG, TIAN LIN
Принадлежит:

The invention relates to the technical field of coal-bed gas exploration and development, and in particular relates to an active water-nitrogen accompanied injection composite fracturing method for permeability enhancement of a coal-bed gas well. The method includes the steps of: when a low-pressure low-permeability coal reservoir is fractured for transformation, firstly injecting the nitrogen by a liquid nitrogen pump truck, then injecting the active water by a hydraulic fracturing truck, and opening flow for flowing back after the fracture is completed. According to the method, the problems that the flow opening and flowback rate is low, even no flowback occurs, pollution to the coal reservoir is large and thereby the permeability is reduced after the low-pressure low-permeability coal reservoir is subjected to active water fracturing modification of the coal-bed gas well are overcome. According to the method, the flow back rate can reach 80%, the pollution to the coal reservoir is small ...

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Номер записи: 9
08-04-2015 дата публикации

DST well testing method for low-pressure reservoir stratum coal-bed gas well

Номер: CN104500056A
Автор: CAO YUNXING, SHI FEN, ZHANG DAQING, CAO YONGHENG, ZHOU DAN
Принадлежит:

A DST well testing method for a low-pressure reservoir stratum coal-bed gas well is characterized by comprising the following steps: pigging and well flushing are carried out, and pigging and well flushing are carried out according to the specified requirement; a pipe column is measured, and the set position of a packer is calculated; the pipe column is sent; the packer carries out setting; primary flowing is carried out when a valve is opened; the pressure is restored when the valve is closed; secondary flowing is carried out when the valve is opened again; secondary pressure is restored when the valve is closed again; the packer is unpacked; the pipe column is tested; sampling is carried out; and data of an electronic manometer are stored after being played back and checked out. The method can accurately, comprehensively and rapidly obtain parameters of a coal reservoir, and the tested parameters are closer to the characteristics of the coal reservoir.

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Номер записи: 10
25-02-2015 дата публикации

Method for accurately measuring gas phase fracture disturbance range

Номер: CN104374589A
Автор: CAO YUNXING, WANG JIANTAO, SUN BINGZHOU, WANG YONGSHENG, DU DONGDONG, CUI HONGWEI, LIU YANWEI, WU YANG, ZHANG JUNSHENG, LIU YANJIE
Принадлежит:

The invention discloses a method for accurately measuring the gas phase fracture disturbance range. Influence from other factors is eliminated by observing and researching the pressure fluctuation change of a disturbance register hole in the drilling, fracture and natural discharging processes of gas phase fracture holes, the pressure fluctuation change, generated after the fracture holes are sealed for a period, of the disturbance register hole, the pressure fluctuation change, generated when nitrogen injection testing is carried out on the fracture holes, of the disturbance register hole, and the permeability changes of the fracture holes, so that the gas phase fracture disturbance range is tested and analyzed. The method can effectively obtain the gas phase fracture disturbance range through measurement, and provides a reliable basis for spacing arrangement of the fracture holes, the number of the fracture holes and the like.

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Номер записи: 11
25-03-2015 дата публикации

Method for multistage connection of deep-hole gas-phase fracture pipes

Номер: CN104453826A
Автор: CAO YUNXING, SUN BINGZHOU, DU JINGWEI, GAO WANXING, LIU YANWEI, ZHAO BIN, PENG YANGYANG, MA BING, SU HENG, WU YANG
Принадлежит:

The invention discloses a method for multistage connection of deep-hole gas-phase fracture pipes. When gas-phase fracture is conducted on a stope face or a driving face, to increase the action radius, usually two or more gas-phase fracture devices are connected, and therefore the designed drilling depth is increased. The inner drilling environment is poor and affected by water, coal sheets and the like, so that the requirement for a connection mode of the fracture devices is strict. According to the method, all the fracture devices are connected one by one in parallel independently, and all the fracture devices are independent of one another and do not interfere with one another; the whole connection system is composed of positive wires and negative wires, and in each set of positive wire holes and negative wire holes, branch positive wires and branch negative wires extend out from the positive wires and negative wires; one end of each branch positive wire and one end of each branch negative ...

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Номер записи: 12
01-04-2015 дата публикации

Gas phase fracturing roof weakening treatment and safety caving method

Номер: CN104481537A
Автор: WANG QIANG, CAO YUNXING, LU ZHIGANG, LI HUISHUANG, GUO JIRONG, XU JILIAN, SUN BAOXU, CUI HONGWEI, DU JINGWEI, ZHANG JUNSHENG, SUN BINGZHOU, GUO DETAO, XU FENGYI, TANG WENJIE
Принадлежит:

The invention discloses a novel gas phase fracturing roof weakening treatment and safety caving method which comprises the following steps: (a) obliquely upwards drilling a pre-splitting hole in a coal seam roof by virtue of the design angle and different drilling hole distances by using a ZLJ-350 special underground drill rig for coal mine from the open-off cut of the coal face and an air return and inlet down channel which is 20-30m away from the open-off cut, wherein the diameter of the drill hole is 75mm; (b) pushing a fracturing rod, wherein after the drilling construction is finished, the drilling and pore-forming effect is observed, namely whether the conditions that the hole collapses and the hole is blocked by coal and gangue is observed, and if the hole collapse and hoe blockage conditions occur, workers are timely organized to clean; then, in order to accelerate the construction progress, on the basis that the mass and friction resistance of the fracturing rod are calculated, ...

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Номер записи: 13
01-08-2023 дата публикации

Three-dimensional crustal stress microseismic inversion method and system

Номер: CN116522676A
Автор: FENG LEI, LIU KAIHANG, YUN MEIHOU, CAO YUNXING, TIAN LIN
Принадлежит:

The invention belongs to the field of crustal stress monitoring, and particularly relates to a three-dimensional crustal stress microseismic inversion method and system. According to the method, the longitudinal wave velocity is inversed only on the section and the plane of the specific position of the specified three-dimensional space, and the micro-seismic event position is obtained; nodes are distributed according to the density of rays in inversion, and if the ray density of a section or a plane is lower than a set density threshold value, the nodes are not distributed on the section or the plane, so that inversion calculation does not need to be carried out in an unnecessary region with relatively low ray density; on the premise that the inversion result is not greatly influenced, the calculation amount can be saved as much as possible, the calculation efficiency is improved, and regional stress abnormity can be found in time through the inversion result; moreover, according to the ...

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Номер записи: 14
04-03-2015 дата публикации

Coalbed methane well fracturing pure-nitrogen blockage-removing method for low-pressure low-permeability reservoir

Номер: CN104389575A
Автор: CAO YUNXING, CAO YONGHENG, ZHOU DAN, JIA MENG, TIAN LIN, SHI FEN
Принадлежит:

The invention relates to a coalbed methane well fracturing blockage-removing technology and pure-nitrogen blockage-removing method for a low-pressure low-permeability reservoir. According to the method, fracturing is performed on a coalbed methane well of the low-pressure low-permeability reservoir; at the earlier stage, a hydraulic fracturing pump truck with a small displacement of 1.5 m3/min to inject 10 m3 of hydrochloric acid fracturing fluid with a concentration of 15% to perform pretreatment on an immediate vicinity of a wellbore; a 1000 k liquid nitrogen pump truck is applied to inject nitrogen, the displacement is 200-400 m3/min, the injection time is not less than 1 h, the total injection amount of the nitrogen is not less than 30000 m3, and close attention is paid to the pressure changes in the injection process; and after the fracturing is finished, a 3-8 mm oil nozzle is installed on a well opening and is connected with a spraying pipeline to perform rapid pressure-controlled ...

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Номер записи: 15
25-02-2015 дата публикации

Gas phase fracturing pipe connecting and buffering device

Номер: CN104373054A
Автор: ZHAO GANGFEI, FU GUOTING, CAO YUNXING, GUO JIRONG, JIANG YONG, ZHANG JUNSHENG, SUN BAOXU, XU JILIAN, JIA JIAN, LIU PENG, CHEN ERLIANG, ZHANG BAO
Принадлежит:

The invention relates to a gas phase fracturing pipe connecting and buffering device. The gas phase fracturing pipe connecting and buffering device flexibly connects gas phase fracturing pipes, and the multiple gas phase fracturing pipes are connected through the gas phase fracturing pipe connecting and buffering device into a whole. When the gas phase fracturing pipes are fractured, released high-energy gas impact waves apply strong recoil force on a gas phase fracturing pipe assembly. The gas phase fracturing pipe connecting and buffering device enables the strong recoil force to be buffered by buffering devices on the multiple fracturing pipes and then weaken step by step, and finally realizes the effect of buffering recoil force.

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Номер записи: 16
04-03-2015 дата публикации

Hole sealing plug device for drilled holes in water-bearing coal seam and use method of hole sealing plug device

Номер: CN104389545A
Автор: CAO YUNXING, ZHAO BIN, ZHANG JUNSHENG, CAO YONGHENG, TIAN LIN, SHI FEN, LIU YANJIE, DU DONGDONG, PENG YANGYANG
Принадлежит:

The invention discloses a hole sealing plug device for drilled holes in a water-bearing coal seam. The device is formed by sewing a muslin bag and a water-absorbent resin material; the yarn count of muslin selected for the muslin bag for making the plug device is 16 or 32 counts, and the density is 60*60; the water-absorbent resin material has a high water-absorbent function of absorbing water which is hundreds of times to thousands of times heavier than the water-absorbent resin material, and is excellent in water retention capacity; once the water-absorbent resin material absorbs the water to expand to become hydrogel, the water is very difficult to separate even if the water-absorbent resin material is pressurized; the expansion times of the plug device is greater than 400 times, and the expansion time is shorter than 5min. The hole sealing plug device is a hole sealing device which is used when drilled holes in the coal seam of an underground coal mine are sealed, and has the rapid ...

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Номер записи: 17
30-04-2014 дата публикации

Pore forming, pit building, powder stamping and pressure relief integrated device in soft coal development area

Номер: CN103758454A
Автор: NI XIAOMING, CAO YUNXING, WANG MINGZHONG, JIA BING, XIA DAPING, SUN XIAOTING
Принадлежит:

A pore forming, pit building, powder stamping and pressure relief integrated device in a soft coal development area comprises a drill rod (14) of a hollow structure, a conical drill bit (36) is arranged at the front end of the drill rod (14), a steering system, a pit building system and a directional system are arranged in the drill rod (14), the middle of the rear end of the drill rod (14) is connected with a high-pressure water supply system, the steering system and the pit building system are arranged in the drill rod (14) and are connected to the corresponding connecting positions of the drill bit (36) respectively, the rear end of the steering system and the rear end of the pit building system are connected with the high-pressure water supply system, and the directional system is arranged on the lower portion inside the drill rod (14). Due to the reasonable design of the directional system, the direction of a flow jet hole and the direction of a steering hole can be accurately determined ...

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Номер записи: 18
25-02-2015 дата публикации

Intrinsic safety type fracture tube push device and using method thereof

Номер: CN104373068A
Автор: CAO YUNXING, PENG YANGYANG, LIU YANWEI, ZHAO BIN, CUI HONGWEI, SU HENG, WU YANG, AN DONGJIE, DU JINGWEI, SUN BINGZHOU
Принадлежит:

The invention belongs to the technical field of gas extraction of underground coal mines and relates to an intrinsic safety type fracture tube push device. The device is composed of a supporting base 1, a stand column 2, a hanging device 3, a push device body 4, an ejector rod 5 and the like. Through the device, a fracture tube can be fed into a deeper hole, efficiency is improved, labor intensity is reduced, and the application range of the fracture technology is widened. The supporting base 1 is placed on the ground, the stand column 2 is vertically inserted in a hole in the supporting base 1, and the hanging device 3 can vertically slide along the stand column 2 so as to adapt to fracture drilling at different heights. The hanging device 3 and the push device body 4 are connected into a whole, and the push device body 4 uses underground compressed air as power to drive a lead screw to rotate so that the fracture tube installed on a push and pull base can be driven to move. An inner rod ...

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Номер записи: 19
04-03-2015 дата публикации

Multifunctional filling device for gas-phase fracturing equipment

Номер: CN104390130A
Автор: CAO YUNXING, ZHANG JUNSHENG, TIAN LIN, CAO YONGHENG, SHI FEN, FAN YANCHANG, WANG YONGSHENG, WANG JIANTAO
Принадлежит:

The invention relates to a multifunctional filling device for gas-phase fracturing equipment. The multifunctional filling device is mainly used for filling a fracturing pipe with gas during gas-phase fracturing, and comprises a cylinder, a clamp holder, a booster pump, a gas collection tank, a filling hole, an adjusting rod, an air inlet valve, an exhaust valve and a bracket, wherein high-pressure gas in a gas bottle serve as power of the booster pump and the cylinder so that power-free operation can be realized; the fracturing pipe can be quickly detached by adopting the clamp holder; the fracturing pipe is fixed at the filling hole by virtue of the adjusting rod to realize quick filling; the booster pump, the cylinder, the clamp holder, the filling hole, the adjusting rod, the air inlet valve and the exhaust valve are integrated on the bracket. The multifunctional filling device for the gas-phase fracturing equipment has the advantages of simple structure, easiness in machining, convenience ...

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Номер записи: 20
04-03-2015 дата публикации

Vertical multifunctional filling device of gas-phase fracturing equipment

Номер: CN104390131A
Автор: CAO YUNXING, ZHANG JUNSHENG, TIAN LIN, CAO YONGHENG, SHI FEN, DU JINGWEI, WU YANG, LU YAOYAO
Принадлежит:

The invention discloses a vertical multifunctional filling device of gas-phase fracturing equipment, which is mainly used for filling the gas-phase fracturing equipment with a liquid medium, and comprises a cylinder, a clamp holder, a booster pump, an air compressor, a tee joint, a filling hole, an adjusting rod, an air inlet valve, an exhaust valve and a bracket, wherein one end of the booster pump can be quickly connected with an outlet of the cylinder; a fracturing pipe can be fixed and loosened by the clamp holder so as to be quickly detached; the fracturing pipe is fixed at the filling hole by virtue of the adjusting rod to realize quick filling; the cylinder, the clamp holder, the filling hole, the adjusting rod, the air inlet valve and the exhaust valve are integrated on the bracket. The vertical multifunctional filling device of the gas-phase fracturing equipment has the advantages of simple structure, easiness in machining and assembling, convenience in use and carry, high filling ...

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Номер записи: 21
11-03-2015 дата публикации

Novel coal bed permeability testing device and method

Номер: CN104406895A
Автор: CAO YUNXING, GUO DETAO, SUN BINGZHOU, LU YAOYAO, ZHANG JUNSHENG, DU JINGWEI, WANG JIANTAO, TIAN LIN, CAO YONGHENG, SHI FEN
Принадлежит:

The invention relates to a novel coal bed permeability testing device and method. The permeability testing device comprises a gas injection system and a sealed recording system, wherein the gas injection system enables gas with certain pressure to enter the sealed recording system after pressurized to certain pressure. According to the permeability testing device and method, through coal bed gas well injection/pressure drop tests, nitrogen is injected into a coal bed for a period with reasonable displacement and pressure, then a pump is stopped for pressure recovery, bottom hole pressure data are recorded during injection and well shutdown, a graph can be drawn automatically on a computer, and the coal bed permeability is calculated accordingly.

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Номер записи: 22
11-03-2015 дата публикации

Method and equipment for reducing pollution through nitrogen foam fracturing of coal-bed gas well of low-pressure and low-permeability reservoir

Номер: CN104405359A
Автор: CAO YUNXING, CAO YONGHENG, ZHOU DAN, JIA MENG, TIAN LIN, SHI FEN
Принадлежит:

The invention relates to a nitrogen foam fracturing technology of a coal-bed gas well of a low-pressure and low-permeability reservoir. In the fracturing process, the low-pressure and low-permeability reservoir is easier to damage. According to a method, high-quality and high-efficiency nitrogen foam of which the mass is 75 percent is adopted for sand-carrying fracturing, the liquid injection quantity of nitrogen foam fracturing is small, the sand-carrying capacity is high, and the de-filtration capacity is high, so that the damage to the low-pressure and low-permeability reservoir is reduced; after the fracturing is completed, an open-flow oil nozzle of which the size is 3-8mm is quickly mounted and is connected with an open-flow pipeline to perform quick pressure-control open flow, and fracturing liquid is returned and discharged to the greatest extent as quickly as possible. The conventional hydraulic fracturing liquid quantity is large, so that the low-pressure and low-permeability ...

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Номер записи: 23
04-03-2015 дата публикации

Gaseous phase fracturing device

Номер: CN104389574A
Автор: CAO YUNXING, ZHANG JUNSHENG, TIAN LIN, CAO YONGHENG, SHI FEN, SUN BINGZHOU, CUI HONGWEI, SU HENG
Принадлежит:

The invention provides a gaseous phase fracturing device. The device can be used for regulating pressure and blasting speed, and comprises a buffer, a snifting valve, a supercharging device, an inflation valve, a fracturing pipe, a sealing ring and a shear plate, wherein the inflation valve and the snifting valve are connected to two end parts of the fracturing pipe through seal threads; the inflation valve comprises a valve and an electrode, the valve is opened and closed to realize the filling of the gaseous phase fracturing device, the electrode is connected with a main hole, and high pressure sealing is realized through the threads and a sealing gasket; meanwhile, a high-performance insulating material and the inflation valve are insulated from each other. The gaseous phase fracturing device is used for fracturing a pre-mining coal bed, increasing fractures of the coal bed and driving gas adsorbed by the coal bed, so that the gas is convenient to extract and the coal and gas outburst ...

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Номер записи: 24
11-03-2015 дата публикации

Mobile type goaf gas quick blocking and extraction device and technology

Номер: CN104405431A
Автор: NI XIAOMING, JIA BING, SUN XIAOTING, CAO YUNXING, ZHANG XIAODONG
Принадлежит:

The invention discloses a mobile type goaf gas quick blocking and extraction device and a mobile type goaf gas quick blocking and extraction technology. The device and the technology are easy and convenient to operate; furthermore, gas in a goaf can be quickly blocked, and the blocked gas can be quickly extracted, so that the difficulty in treating the gas in the goaf can be effectively solved, the gas content of the goaf is fundamentally reduced, the goaf gas gathering amount and the gas gush amount to a stopping working surface are reduced, the influence of the gas in the goaf on the concentration of the gas on the stopping working surface is reduced to the maximum extent, and great significance in reducing the mine ventilating difficulty and realizing safe and high-efficiency production of a coal mine is realized. Multiple stages of fixing devices are convenient for flexible gas pocket forming, and overlarge deformation of a local area of a flexible gas pocket can be avoided; the operation ...

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Номер записи: 25
22-04-2015 дата публикации

Active water-nitrogen injection combination fracturing fast flow-back production increase method for coal-bed gas well

Номер: CN104533374A
Автор: CAO YUNXING, ZHOU DAN, TIAN LIN, CAO YONGHENG, JIA MENG, SHI FEN
Принадлежит:

The invention relates to the technical field of coal-bed gas exploration and development, in particular to an active water-nitrogen injection combination fracturing fast flow-back production increase method for a coal-bed gas well. The active water-nitrogen injection combination fracturing fast flow-back production increase method for the coal-bed gas well includes steps that using a liquid nitrogen pump truck to fill nitrogen when performing low-pressure low-permeability coal reservoir fracturing improvement, using a hydraulic fracturing truck to fill active water, and immediately opening flow to flow back after ending fracturing. The active water-nitrogen injection combination fracturing fast flow-back production increase method for the coal-bed gas well solves the problems of low even zero flow-back rate of flow opening, large pollution to the coal reservoir and low permeability after the active water fracturing improvement for the low-permeability coal reservoir of the coal-bed gas ...

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Номер записи: 26
25-07-2012 дата публикации

On-site sealed sampling device for coal bed gas

Номер: CN0102103041B
Автор: YUGUI ZHANG, ZHIQI GUO, YIMIN ZHANG, ZIMIN ZHANG, YUNXING CAO, LIANGXIAN LI, ZHANG YUGUI, GUO ZHIQI, ZHANG YIMIN, ZHANG ZIMIN, CAO YUNXING, LI LIANGXIAN
Принадлежит:

The invention discloses an on-site sealed sampling device for coal bed gas. The device comprises a hollow long rod piece, wherein the outer circumference of the long rod piece is provided with a spiral convex edge; a coal storage cabin, a closed cabin, a transmission cabin and a power and control cabin are arranged in the long rod piece from front to back respectively; the closed cabin is provided with a coal inlet; a reciprocating push and pull mechanism is arranged in the transmission cabin; a micro power speed reducing motor for providing power for the reciprocating push and pull mechanismis arranged in the power and control cabin; the front end of the reciprocating push and pull mechanism is in transmission connection with a piston sliding sleeve device for opening and closing the coal inlet; and the front end of the coal storage cabin is provided with a gas resolution hole. The device is mainly used for a sampling link before the process of measuring the content of the gas in a laboratory ...

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Номер записи: 27
25-03-2015 дата публикации

Active pressure maintaining and hole sealing material for gas extraction drill hole and hole sealing process thereof

Номер: CN104449609A
Автор: CAO YUNXING, MA BING, ZHANG JUNSHENG, GUO DETAO, LIU YANJIE, LIU YANWEI, CUI HONGWEI, SUN BINGZHOU, DU DONGDONG, WANG JIANTAO
Принадлежит:

The invention discloses an active pressure maintaining and hole sealing material for a gas extraction drill hole and a hole sealing process thereof. The hole sealing material is prepared by the following steps: reasonably proportioning ordinary Portland cement and sulfoaluminum cement, and adding a proper amount of foaming agent and concrete admixture. According to repeated scientific experiments, induction, verification and summarization, a novel hole sealing material is researched, and the material has the characteristics of rapid hardening, early strength, high strength and high expansion rate and is a composite non-chemical grouting material. According to the hole sealing process disclosed by the invention, an active pressure maintaining mode is adopted, namely the novel hole sealing slurry is injected into a hole-sealing grouting chamber by virtue of a grouting pump, so that a certain organic hole-sealing pressure is maintained. Moreover, according to the expansibility of the novel ...

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Номер записи: 28
01-08-2023 дата публикации

Phase state detection method in liquid CO2 phase change fracturing process

Номер: CN116519735A
Автор: CAO YUNXING, MENG BINGBING, ZHANG JUNSHENG, ZHANG XINSHENG, GUO SHUAIFANG, XU FENGYI, YANG BAIGE, CAO KEHE
Принадлежит:

The invention relates to the field of CO2 fracturing, in particular to a phase state determination method for a liquid CO2 phase change fracturing process, which comprises the following steps: firstly, measuring the pressure and temperature curve of CO2 in a CO2 fracturing device in a filling process by adopting a static temperature and pressure sensor, and determining the phase state of CO2 before a heater is not excited; a dynamic sensor is adopted to measure a time-history curve of all pressure released to the air after the heater is excited and CO2 breaks through the shear blade; determining a linear relation between the temperature and the pressure of the CO2 in a supercritical state by adopting a water bath heating method; fitting the Spanamp according to the linear relation; the method comprises the following steps of: obtaining temperature and pressure linear relational expressions of different types of CO2 fracturing devices under corresponding densities according to the existing ...

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Номер записи: 29
01-04-2015 дата публикации

Coal-bed gas well nitrogen foam fracturing fluid system

Номер: CN104481490A
Автор: CAO YUNXING, ZHOU DAN, TIAN LIN, CAO YONGHENG, JIA MENG, SHI FEN
Принадлежит:

The invention discloses a coal-bed gas well nitrogen foam fracturing fluid system. Nitrogen foam fracturing fluid comprises, in weight percent, 1.0% of potassium chloride, 0.2% of GCW-3K (gelatin powder), 0.1% of SUPER100 (foaming agents), 0.05% of SAS100 (breaking agents) and 98.8% of water, wherein the SUPER100 (foaming agents) and the SAS100 (breaking agents) account for the volume ratio of the prepared glue liquor. The coal-bed gas well nitrogen foam fracturing fluid system has the advantages of gel breaking rapidness, less reservoir pollution, high sand carrying capability, small filter loss, fine backflow effect, wide fracturing fracture and the like, partial pressure of methane can be reduced by nitrogen, gas in a coal-bed gas well can be rapidly desorbed, and gas yield can be improved.

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Номер записи: 30
31-03-2020 дата публикации

一种土地规划设计用平板电脑

Номер: CN210222623U
Автор: Junjie Cai, Yunxing Cao, 曹运星, 蔡俊杰
Принадлежит: Hunan Hongkang Planning Survey Consulting Co ltd

本实用新型涉及一种土地规划设计用平板电脑，包括支架和平板电脑，所述支架包括设于平板电脑一侧的转动件和一端与转动件相连的支撑杆，所述转动件包括一组相对设置的定位块、两端分别插接于定位块的转杆和设于定位块上且与转杆相连的限位件，支撑杆与转杆固定且支撑杆的轴线与转杆的轴线垂直，转杆转动过程中支撑杆与平板电脑的一侧抵接。本实用新型具有便于携带的效果。

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Номер записи: 31