CN106285605A - A kind of microwave liquid nitrogen works in coordination with freeze thawing coal seam anti-reflection method - Google Patents

A kind of microwave liquid nitrogen works in coordination with freeze thawing coal seam anti-reflection method Download PDF

Info

Publication number
CN106285605A
CN106285605A CN201610941194.4A CN201610941194A CN106285605A CN 106285605 A CN106285605 A CN 106285605A CN 201610941194 A CN201610941194 A CN 201610941194A CN 106285605 A CN106285605 A CN 106285605A
Authority
CN
China
Prior art keywords
freeze thawing
liquid nitrogen
microwave
boring
coal seam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610941194.4A
Other languages
Chinese (zh)
Other versions
CN106285605B (en
Inventor
李贺
林柏泉
洪溢都
杨威
刘统
王瑞
黄展博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN201610941194.4A priority Critical patent/CN106285605B/en
Publication of CN106285605A publication Critical patent/CN106285605A/en
Application granted granted Critical
Publication of CN106285605B publication Critical patent/CN106285605B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
    • E21B43/168—Injecting a gaseous medium
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/20—Displacing by water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/2405—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection in association with fracturing or crevice forming processes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves

Abstract

A kind of microwave liquid nitrogen works in coordination with freeze thawing coal seam anti-reflection method, a freeze thawing boring of constructing to coal seam, and at freeze thawing boring two mash gas pumping drillings of both sides construction.Microwave antenna, coaxial waveguide, water injection pipe are sent into together with liquid nitrogen pipe in freeze thawing boring；First, open water injecting pump, water filling in freeze thawing is holed；Then, open liquid nitrogen pump, fluid injection nitrogen in freeze thawing is holed, freezes hole Nei Shui as ice, fracturing coal seam；Finally, open microwave generator, the microwave produced arrives microwave antenna and by microwave antenna to freeze thawing boring radiation by rectangular waveguide, waveguide switch, coaxial waveguide, the ice in hole is made quickly to melt and gasify, high-temperature high-pressure steam continues fracturing coal seam, and gas at high temperature continuous desorbing also pours into mash gas pumping drilling along crack in coal.Microwave radiation is combined by the present invention with frozen-thawed, substantially increases coal seam porosity, permeability, promotes desorption of mash gas, thus gas pumping effect is greatly improved, have wide applicability.

Description

A kind of microwave liquid nitrogen works in coordination with freeze thawing coal seam anti-reflection method
Technical field
The present invention relates to a kind of microwave liquid nitrogen and work in coordination with freeze thawing coal seam anti-reflection method, belong to underground coal mine anti-reflection correlation technique neck Territory, is particularly suited for soft high gas layer.
Background technology
In coal, gas is to be one of underground coal mine dangerous matter sources, is again a kind of clean energy resource, and the down-hole extraction of gas can Effectively eliminate gas accident threaten and developed, but, China coal seam has high absorption, micropore, the spy of hyposmosis Point, gas pumping difficulty, gas accident takes place frequently.Develop the anti-reflection measure in a lot of coal seam both at home and abroad, such as: fracturing, waterpower are cut Seam, hydraulic flushing in hole, controlled blasting etc., in recent years, utilize the coal seam freeze thawing fracturing technology of waterpower phase transformation gradually to develop, but, freeze Knot coal seam will certainly reduce coal seam temperature, seriously inhibits desorption of mash gas, and meanwhile, the ice room temperature in conventional freeze-thaw technology melts relatively Slowly, the residual moisture in coal also can cause water-blocking effect, blocks gas migration passage, and these are all unfavorable for gas pumping.Therefore, Need a kind of new technique of research badly, it is possible to solve the technical bottleneck of coal seam freeze thawing.
Summary of the invention
Technical problem: it is an object of the invention to overcome weak point present in prior art, it is provided that a kind of method is simple, The microwave liquid nitrogen that gas pumping efficiency can be greatly improved works in coordination with freeze thawing coal seam anti-reflection method.
Technical scheme: the microwave liquid nitrogen of the present invention works in coordination with freeze thawing coal seam anti-reflection method, comprises the following steps:
A, a freeze thawing boring of constructing to coal seam in tunnel, and two gas pumpings brills of constructing in freeze thawing boring both sides Hole, the two ends of freeze thawing boring and mash gas pumping drilling lay respectively in top board and base plate；
B, in mash gas pumping drilling, send into drainage tube, in freeze thawing is holed, send into water injection pipe, liquid nitrogen pipe and be connected with microwave The coaxial waveguide of antenna, utilizes hole packer to seal freeze thawing boring and mash gas pumping drilling afterwards；
C, being connected on waveguide switch the outer end of coaxial waveguide, waveguide switch occurs with microwave through rectangular waveguide Device is connected；Being connected with water injecting pump the outer end of water injection pipe, water injecting pump is connected with water tank through pipeline；By the outer end of liquid nitrogen pipe Portion is connected with liquid nitrogen pump, and liquid nitrogen pump is connected with liquid nitrogen container through pipeline；
After d, pipeline have connected, open water injecting pump, water filling in freeze thawing is holed, close when water injecting pump pressure begins to ramp up Close water injecting pump, stop water filling；
E, open liquid nitrogen pump, fluid injection nitrogen in freeze thawing is holed, freezes water in hand-hole as ice, fracturing coal seam；
F, opening microwave generator, the microwave of generation arrives microwave sky by rectangular waveguide, waveguide switch, coaxial waveguide Line is also radiated in freeze thawing is holed by microwave antenna, makes the ice in hole quickly melt and gasify, and produced high-temperature high pressure water steams Gas continues fracturing coal seam, and gas at high temperature continuous desorbing also pours into mash gas pumping drilling along crack in coal；
G, repetition step e～f, be connected gas pumping pipe with fire damp pipe network, carry out gas pumping.
The operating frequency of described microwave generator is 2.45GHz, and power is 2kW.
Described freeze thawing boring is 3.5-4.5m with the distance of mash gas pumping drilling.
Beneficial effect: microwave radiation is combined by the present invention with coal seam freeze thawing, after coal seam freezing fracturing, utilizes microwave spoke Penetrating heating coal seam, make ice melt rapidly and gasify, high-temperature high-pressure steam continues fracturing coal seam, and gas the most constantly solves Inhale, this invention removes water-blocking effect, substantially increase coal seam porosity, permeability, promote desorption of mash gas, thus significantly Improve gas pumping effect, there is wide applicability in the art.
Accompanying drawing explanation
Fig. 1 is that the microwave liquid nitrogen of the present invention works in coordination with freeze thawing coal seam anti-reflection method layout schematic diagram.
In figure: 1-coal seam, 2-freeze thawing is holed, 3-mash gas pumping drilling, 4-top board, 5-base plate, 6-drainage tube, 7-microwave sky Line, 8-coaxial waveguide, 9-water injection pipe, 10-liquid nitrogen pipe, 11-hole packer, 12-waveguide switch, 13-rectangular waveguide, 14-microwave Generator, 15-water injecting pump, 16-water tank, 17-liquid nitrogen pump, 18-liquid nitrogen container.
Detailed description of the invention
Below in conjunction with the accompanying drawings one embodiment of the present of invention is further described:
As it is shown in figure 1, the microwave liquid nitrogen of the present invention works in coordination with freeze thawing coal seam anti-reflection method, comprise the following steps:
First, a freeze thawing boring 2 of constructing to coal seam 1 in tunnel, and construct at 2 both sides 3.5-4.5m are holed in freeze thawing Two mash gas pumping drillings 3, the two ends of freeze thawing boring 2 and mash gas pumping drilling 3 lay respectively in top board 4 and base plate 5.By extraction Pipe 6 one end send into mash gas pumping drilling 3, microwave antenna 7 is connected with coaxial waveguide 8, and by microwave antenna 7, coaxial waveguide 8, Water injection pipe 9 is sent in freeze thawing boring 2 together with liquid nitrogen pipe 10, utilizes hole packer 11 to enter freeze thawing boring 2 and mash gas pumping drilling 3 Row seals.Meanwhile, the outer end of coaxial waveguide 8 being connected waveguide switch 12, waveguide switch 12 is connected with rectangular waveguide 13, Rectangular waveguide 13 is connected with microwave generator 14, and wherein, the operating frequency of microwave generator 10 is 2.45GHz, and power is 2kW. It addition, the outer end of water injection pipe 9 is connected water injecting pump 15, water injecting pump 15 is connected with water tank 16.Then, by the outer end of liquid nitrogen pipe 10 Portion connects liquid nitrogen pump 17, and liquid nitrogen pump 17 is connected with liquid nitrogen container 18.After pipeline has connected, open water injecting pump 15, to freeze thawing boring 2 Interior water filling, closes water injecting pump 15, stops water filling when water injecting pump 15 pressure begins to ramp up.Now, liquid nitrogen pump 17 is opened, to freeze thawing Fluid injection nitrogen in boring 2, freezes hole Nei Shui for ice, fracturing coal seam 1, afterwards, to open microwave generator 14, microwave generator 14 institute The microwave produced arrives microwave antenna 7 and by microwave antenna 7 to freezing by rectangular waveguide 13, waveguide switch 12, coaxial waveguide 8 Melting boring 2 radiation, make the ice in hole quickly melt and gasify, high-temperature high-pressure steam continues fracturing coal seam 1, and gas is at high temperature Continuous desorbing also pours into mash gas pumping drilling 3 along crack in coal, is connected with fire damp pipe network by gas pumping pipe 6, carries out Gas pumping.

Claims (3)

1. a microwave liquid nitrogen works in coordination with freeze thawing coal seam anti-reflection method, it is characterised in that comprise the following steps:
A, construct freeze thawing boring (2) to coal seam (1) in tunnel, and take out at freeze thawing boring two gas of (2) both sides construction Borehole (3), the two ends of freeze thawing boring (2) and mash gas pumping drilling (3) lay respectively in top board (4) and base plate (5)；
B, in mash gas pumping drilling (3) send into drainage tube (6), to freeze thawing boring (2) in feeding water injection pipe (9), liquid nitrogen pipe (10) hole packer (11) and be connected with the coaxial waveguide (8) of microwave antenna (7), is utilized freeze thawing to be holed (2) and gas pumping afterwards Boring (3) seals；
C, being connected on waveguide switch (12) outer end of coaxial waveguide (8), waveguide switch (12) is through rectangular waveguide (13) it is connected with microwave generator (14)；The outer end of water injection pipe (9) is connected with water injecting pump (15), water injecting pump (15) warp Pipeline is connected with water tank (16)；The outer end of liquid nitrogen pipe (10) is connected with liquid nitrogen pump (17), liquid nitrogen pump (17) through pipeline with Liquid nitrogen container (18) connects；
After d, pipeline have connected, opening water injecting pump (15), water filling in freeze thawing boring (2), when water injecting pump (15) pressure starts Close water injecting pump (15) during rising, stop water filling；
E, open liquid nitrogen pump (17), fluid injection nitrogen in freeze thawing boring (2), freezes water in hand-hole as ice, fracturing coal seam (1)；
F, opening microwave generator (14), the microwave of generation passes through rectangular waveguide (13), waveguide switch (12), coaxial waveguide (8) arrive microwave antenna (7) and radiated in freeze thawing boring (2) by microwave antenna (7), making the ice in hole quickly melt and gas Changing, produced high-temperature high-pressure steam continues fracturing coal seam (1), and gas at high temperature continuous desorbing is also gushed along crack in coal To mash gas pumping drilling (3)；
G, repetition step e ~ f, be connected gas pumping pipe (6) with fire damp pipe network, carry out gas pumping.
A kind of microwave liquid nitrogen the most according to claim 1 works in coordination with freeze thawing coal seam anti-reflection method, it is characterised in that: described The operating frequency of microwave generator (10) is 2.45 GHz, and power is 2 kW.
A kind of microwave liquid nitrogen the most according to claim 1 works in coordination with freeze thawing coal seam anti-reflection method, it is characterised in that: described freezes The distance melting boring (2) and mash gas pumping drilling (3) is 3.5-4.5m.
CN201610941194.4A 2016-11-01 2016-11-01 A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method Active CN106285605B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610941194.4A CN106285605B (en) 2016-11-01 2016-11-01 A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610941194.4A CN106285605B (en) 2016-11-01 2016-11-01 A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method

Publications (2)

Publication Number Publication Date
CN106285605A true CN106285605A (en) 2017-01-04
CN106285605B CN106285605B (en) 2019-06-04

Family

ID=57719880

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610941194.4A Active CN106285605B (en) 2016-11-01 2016-11-01 A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method

Country Status (1)

Country Link
CN (1) CN106285605B (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837285A (en) * 2017-01-19 2017-06-13 中国矿业大学(北京) A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device
CN106869891A (en) * 2017-03-09 2017-06-20 杨世梁 A kind of coal bed methane exploring method and device of ice-cleat pressure regulation
CN106988719A (en) * 2017-05-09 2017-07-28 河南理工大学 The anti-reflection system and anti-reflection method of injection hot water and liquid nitrogen are circulated to coal seam
CN107762473A (en) * 2017-09-28 2018-03-06 徐州工程学院 A kind of liquid nitrogen and the method for high temperature nitrogen Frozen-thawed cycled increase coal body gas permeability
CN108361061A (en) * 2018-04-27 2018-08-03 河南理工大学 Hypotonic coal seam electric detonation shake and microwave radiation technology frozen-thawed permeability improvement device and method
CN108397182A (en) * 2018-04-27 2018-08-14 河南理工大学 Electric pulse cooperates with the device and method in the anti-reflection coal seam of frozen-thawed
WO2018161469A1 (en) * 2017-03-06 2018-09-13 中国矿业大学 Coal bulk permeability enhancing method using heat injection performed by combining microwaves and hot air
CN108915648A (en) * 2018-06-29 2018-11-30 徐州工程学院 A kind of encapsulating method suitable for high temperature nitrogen injection coal bed drilling
CN109578059A (en) * 2019-01-18 2019-04-05 中国矿业大学 A kind of down-hole coal bed gas pumping method and its liquid nitrogen flow bursting by freezing device used
CN109723488A (en) * 2019-03-05 2019-05-07 重庆大学 Utilize the gas pumping method and extraction system of phase-change material auxiliary liquid nitrogen fracturing
CN109854210A (en) * 2019-03-05 2019-06-07 重庆大学 Using the gas pumping method and extraction system of liquid nitrogen and steam fracturing coal seam
CN110056355A (en) * 2019-04-24 2019-07-26 河南理工大学 Rush that Frozen-thawed cycled is anti-reflection takes out safe and efficient coal uncovering method
CN110067549A (en) * 2019-03-26 2019-07-30 湖南科技大学 Ultra-thin coal seam group based on microwave radiation is gasified recovery method in situ
CN110617047A (en) * 2019-10-21 2019-12-27 中煤科工集团重庆研究院有限公司 Coal seam gas extraction method based on directional drilling and liquid nitrogen quick freezing thermal cracking
CN110985110A (en) * 2019-12-18 2020-04-10 中南大学 High-gas tight coal seam pumping and injecting integrated system and method
CN111075420A (en) * 2019-12-20 2020-04-28 中国矿业大学 Method for efficiently increasing permeability of coal body by utilizing liquid nitrogen-hot gas cold and hot circulating impact
CN111173513A (en) * 2020-03-16 2020-05-19 中国矿业大学 Low-temperature fracturing roof caving method for hard roof of coal mine goaf
CN111287702A (en) * 2020-02-20 2020-06-16 中国矿业大学 Coal bed permeability increasing method with ice particle abrasive jet flow slotting and microwave heat injection in cooperation
CN111980651A (en) * 2020-07-24 2020-11-24 中国矿业大学 Horizontal well low-temperature fluid graded fracturing method
CN112096363A (en) * 2020-09-28 2020-12-18 中国地质大学（北京） Liquid nitrogen injection freeze-drying coal bed gas production increasing system and working method thereof
CN112412417A (en) * 2020-11-05 2021-02-26 河南理工大学 The coal seam hydraulic power cave-making combined drilling heat injection permeability-increasing pumping-promoting method
CN112855246A (en) * 2021-03-12 2021-05-28 山东科技大学 Ultrasonic microwave synergistic automatic coal seam water injection equipment and method
CN112901118A (en) * 2021-03-18 2021-06-04 山东科技大学 Method for hydraulic seam cutting, liquid nitrogen frost heaving and blasting combined permeability-increasing coal seam
CN114165208A (en) * 2021-12-17 2022-03-11 贵州大学 Microwave degradation and pressure disturbance coal bed gas shale gas yield increasing equipment and using method
CN114370256A (en) * 2022-01-17 2022-04-19 西安科技大学 System and method for increasing permeability and gas displacement of carbon dioxide hot steam freeze-thaw coal seam
CN114508336A (en) * 2022-01-30 2022-05-17 中国矿业大学 Drilling, unfreezing and fracturing integrated device and method for soft coal seam
CN114575814A (en) * 2022-03-07 2022-06-03 徐州工程学院 Liquid nitrogen combined microwave fracturing coal seam permeability increasing method based on nano barium titanate
CN114856565A (en) * 2022-06-09 2022-08-05 中国矿业大学 Coal seam fracturing device and fracturing method
CN117759152A (en) * 2024-02-21 2024-03-26 太原理工大学 microwave-liquid nitrogen in-situ coupling temperature impact drilling device and construction method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362538A (en) * 2013-07-15 2013-10-23 中国矿业大学 Pressure alternate gas exhausting method by slotting and fracturing coal seams
CN104963674A (en) * 2015-07-17 2015-10-07 煤炭科学技术研究院有限公司 Low permeability coal bed liquid nitrogen freeze thawing cracking permeability increasing method
CN105134284A (en) * 2015-08-03 2015-12-09 中国矿业大学 Gas extraction method based on horizontal orientation boring liquid nitrogen cycle freeze-thaw anti-reflection
CN105507872A (en) * 2015-12-31 2016-04-20 河南理工大学 Hydraulic flushing and presplit blasting combined permeability-increasing extraction system in crossing holes
CN105507812A (en) * 2015-12-29 2016-04-20 中国矿业大学 Microwave-radiation in-hole vaporized hydraulic flushing method
WO2016112759A1 (en) * 2015-01-12 2016-07-21 中国矿业大学 Method for thermal-displacement-type strengthened extraction in drill hole

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362538A (en) * 2013-07-15 2013-10-23 中国矿业大学 Pressure alternate gas exhausting method by slotting and fracturing coal seams
WO2016112759A1 (en) * 2015-01-12 2016-07-21 中国矿业大学 Method for thermal-displacement-type strengthened extraction in drill hole
CN104963674A (en) * 2015-07-17 2015-10-07 煤炭科学技术研究院有限公司 Low permeability coal bed liquid nitrogen freeze thawing cracking permeability increasing method
CN105134284A (en) * 2015-08-03 2015-12-09 中国矿业大学 Gas extraction method based on horizontal orientation boring liquid nitrogen cycle freeze-thaw anti-reflection
CN105507812A (en) * 2015-12-29 2016-04-20 中国矿业大学 Microwave-radiation in-hole vaporized hydraulic flushing method
CN105507872A (en) * 2015-12-31 2016-04-20 河南理工大学 Hydraulic flushing and presplit blasting combined permeability-increasing extraction system in crossing holes

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837285A (en) * 2017-01-19 2017-06-13 中国矿业大学(北京) A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device
WO2018161469A1 (en) * 2017-03-06 2018-09-13 中国矿业大学 Coal bulk permeability enhancing method using heat injection performed by combining microwaves and hot air
CN106869891A (en) * 2017-03-09 2017-06-20 杨世梁 A kind of coal bed methane exploring method and device of ice-cleat pressure regulation
CN106869891B (en) * 2017-03-09 2019-03-15 杨世梁 A kind of coal bed methane exploring method and device of ice-cleat pressure regulation
CN106988719A (en) * 2017-05-09 2017-07-28 河南理工大学 The anti-reflection system and anti-reflection method of injection hot water and liquid nitrogen are circulated to coal seam
CN107762473A (en) * 2017-09-28 2018-03-06 徐州工程学院 A kind of liquid nitrogen and the method for high temperature nitrogen Frozen-thawed cycled increase coal body gas permeability
CN107762473B (en) * 2017-09-28 2019-07-02 徐州工程学院 A kind of method of liquid nitrogen and high temperature nitrogen Frozen-thawed cycled increase coal body gas permeability
CN108397182A (en) * 2018-04-27 2018-08-14 河南理工大学 Electric pulse cooperates with the device and method in the anti-reflection coal seam of frozen-thawed
CN108361061A (en) * 2018-04-27 2018-08-03 河南理工大学 Hypotonic coal seam electric detonation shake and microwave radiation technology frozen-thawed permeability improvement device and method
CN108397182B (en) * 2018-04-27 2024-03-01 河南理工大学 Device and method for enhancing permeability of coal seam through electric pulse and liquid nitrogen freeze thawing
CN108361061B (en) * 2018-04-27 2024-03-01 河南理工大学 Low permeability coal seam electric detonation and microwave-assisted liquid nitrogen freeze thawing anti-reflection device and method
CN108915648A (en) * 2018-06-29 2018-11-30 徐州工程学院 A kind of encapsulating method suitable for high temperature nitrogen injection coal bed drilling
CN108915648B (en) * 2018-06-29 2020-10-13 徐州工程学院 Sealing method suitable for high-temperature nitrogen injection coal seam drilling
CN109578059A (en) * 2019-01-18 2019-04-05 中国矿业大学 A kind of down-hole coal bed gas pumping method and its liquid nitrogen flow bursting by freezing device used
CN109578059B (en) * 2019-01-18 2020-10-09 中国矿业大学 Underground coal bed gas extraction method and liquid nitrogen flowing frost cracking device used by same
CN109854210A (en) * 2019-03-05 2019-06-07 重庆大学 Using the gas pumping method and extraction system of liquid nitrogen and steam fracturing coal seam
CN109723488A (en) * 2019-03-05 2019-05-07 重庆大学 Utilize the gas pumping method and extraction system of phase-change material auxiliary liquid nitrogen fracturing
CN110067549A (en) * 2019-03-26 2019-07-30 湖南科技大学 Ultra-thin coal seam group based on microwave radiation is gasified recovery method in situ
CN110067549B (en) * 2019-03-26 2021-08-20 湖南科技大学 In-situ gasification mining method for ultra-thin coal seam group based on microwave radiation
CN110056355B (en) * 2019-04-24 2020-09-18 河南理工大学 Safe and efficient cross-cut coal uncovering method for increasing permeability and promoting pumping through freeze-thaw cycle
CN110056355A (en) * 2019-04-24 2019-07-26 河南理工大学 Rush that Frozen-thawed cycled is anti-reflection takes out safe and efficient coal uncovering method
CN110617047A (en) * 2019-10-21 2019-12-27 中煤科工集团重庆研究院有限公司 Coal seam gas extraction method based on directional drilling and liquid nitrogen quick freezing thermal cracking
CN110985110B (en) * 2019-12-18 2021-06-25 中南大学 High-gas tight coal seam pumping and injecting integrated system and method
CN110985110A (en) * 2019-12-18 2020-04-10 中南大学 High-gas tight coal seam pumping and injecting integrated system and method
CN111075420A (en) * 2019-12-20 2020-04-28 中国矿业大学 Method for efficiently increasing permeability of coal body by utilizing liquid nitrogen-hot gas cold and hot circulating impact
CN111075420B (en) * 2019-12-20 2021-09-07 中国矿业大学 Method for efficiently increasing permeability of coal body by utilizing liquid nitrogen-hot gas cold and hot circulating impact
CN111287702A (en) * 2020-02-20 2020-06-16 中国矿业大学 Coal bed permeability increasing method with ice particle abrasive jet flow slotting and microwave heat injection in cooperation
CN111173513A (en) * 2020-03-16 2020-05-19 中国矿业大学 Low-temperature fracturing roof caving method for hard roof of coal mine goaf
CN111173513B (en) * 2020-03-16 2020-11-27 中国矿业大学 Low-temperature fracturing roof caving method for hard roof of coal mine goaf
CN111980651A (en) * 2020-07-24 2020-11-24 中国矿业大学 Horizontal well low-temperature fluid graded fracturing method
CN112096363B (en) * 2020-09-28 2021-06-22 中国地质大学（北京） Liquid nitrogen injection freeze-drying coal bed gas production increasing system and working method thereof
CN112096363A (en) * 2020-09-28 2020-12-18 中国地质大学（北京） Liquid nitrogen injection freeze-drying coal bed gas production increasing system and working method thereof
CN112412417B (en) * 2020-11-05 2022-11-18 河南理工大学 Method for promoting pumping of coal seam by combining hydraulic cave building with drilling, heat injection, permeability increase
CN112412417A (en) * 2020-11-05 2021-02-26 河南理工大学 The coal seam hydraulic power cave-making combined drilling heat injection permeability-increasing pumping-promoting method
CN112855246A (en) * 2021-03-12 2021-05-28 山东科技大学 Ultrasonic microwave synergistic automatic coal seam water injection equipment and method
CN112901118A (en) * 2021-03-18 2021-06-04 山东科技大学 Method for hydraulic seam cutting, liquid nitrogen frost heaving and blasting combined permeability-increasing coal seam
CN114165208A (en) * 2021-12-17 2022-03-11 贵州大学 Microwave degradation and pressure disturbance coal bed gas shale gas yield increasing equipment and using method
CN114370256A (en) * 2022-01-17 2022-04-19 西安科技大学 System and method for increasing permeability and gas displacement of carbon dioxide hot steam freeze-thaw coal seam
CN114508336B (en) * 2022-01-30 2022-09-30 中国矿业大学 Drilling, unfreezing and fracturing integrated device and method for soft coal seam
CN114508336A (en) * 2022-01-30 2022-05-17 中国矿业大学 Drilling, unfreezing and fracturing integrated device and method for soft coal seam
CN114575814A (en) * 2022-03-07 2022-06-03 徐州工程学院 Liquid nitrogen combined microwave fracturing coal seam permeability increasing method based on nano barium titanate
CN114856565A (en) * 2022-06-09 2022-08-05 中国矿业大学 Coal seam fracturing device and fracturing method
CN117759152A (en) * 2024-02-21 2024-03-26 太原理工大学 microwave-liquid nitrogen in-situ coupling temperature impact drilling device and construction method thereof
CN117759152B (en) * 2024-02-21 2024-04-26 太原理工大学 Microwave-liquid nitrogen in-situ coupling temperature impact drilling device and construction method thereof

Also Published As

Publication number Publication date
CN106285605B (en) 2019-06-04

Similar Documents

Publication Publication Date Title
CN106285605A (en) A kind of microwave liquid nitrogen works in coordination with freeze thawing coal seam anti-reflection method
CN104632270B (en) A kind of oscillating impulse formula high enegry gas fracturing and heat injection alternation mash gas extraction method
CN108361061B (en) Low permeability coal seam electric detonation and microwave-assisted liquid nitrogen freeze thawing anti-reflection device and method
CN105484720B (en) The coal seam anti-reflection method that a kind of On Microwave-assisted Extraction is mutually cooperateed with hydraulic fracturing
CN104265354B (en) A kind of low air permeability coal seam waterpower phase transformation fracturing strengthening gas pumping method
CN104213932B (en) A kind of projecting coal bed waterpower phase transformation fracturing coal uncovering method
CN106988719B (en) Anti-reflection system and anti-reflection method for circularly injecting hot water and liquid nitrogen into coal seam
CN105507812B (en) Waterpower hole-punching method is vaporized in a kind of microwave radiation hole
CN106285604A (en) A kind of microwave-assisted supercritical carbon dioxide circulation frac system and method
CN108397182B (en) Device and method for enhancing permeability of coal seam through electric pulse and liquid nitrogen freeze thawing
CN212003131U (en) Enhanced gas extraction system applying hot steam and microwave radiation in cooperation with permeability-increasing coal seam
CN109915199B (en) Progressive permeability-increasing coal seam reinforced gas extraction device and use method thereof
CN105525901B (en) A kind of coal seam hydraulic fracture reinforcing anti-reflection method based on microwave irradiation
CN104213921B (en) Based on the freezing type coal uncovering method of hydraulic slotted liner technique
CN105134284A (en) Gas extraction method based on horizontal orientation boring liquid nitrogen cycle freeze-thaw anti-reflection
CN203891922U (en) Effective extraction system for gas in coal seam
CN103114871A (en) Extraction device and method utilizing microwave coal heating layer
CN106869991B (en) A kind of coal body anti-reflection method of microwave hot air coupling heat injection
CN209855850U (en) Enhanced gas extraction device for step-by-step permeability-increasing coal seam
CN106223910B (en) Air-injection displacement method is heated to oil reservoir air injection, oxygen-enriched oil-breaking power-up magnetic wave
CN109854210A (en) Using the gas pumping method and extraction system of liquid nitrogen and steam fracturing coal seam
CN105114116A (en) Method for strengthening regional gas extraction through hydro-thermal coupling fracturing
CN104612640A (en) Underground coal mine drilling, heat injection and hole sealing integration method
CN203531877U (en) Underground coal mine fracturing connecting device
CN106321142A (en) Rock cross-cut coal uncovering method combining microwave-assisted extraction with grouting reinforcement

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Lin Baiquan

Inventor after: Li He

Inventor after: Hong Yidu

Inventor after: Yang Wei

Inventor after: Liu Tong

Inventor after: Wang Rui

Inventor after: Huang Zhanbo

Inventor before: Li He

Inventor before: Lin Baiquan

Inventor before: Hong Yidu

Inventor before: Yang Wei

Inventor before: Liu Tong

Inventor before: Wang Rui

Inventor before: Huang Zhanbo

GR01 Patent grant
GR01 Patent grant