CN106285605B - A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method - Google Patents
A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method Download PDFInfo
- Publication number
- CN106285605B CN106285605B CN201610941194.4A CN201610941194A CN106285605B CN 106285605 B CN106285605 B CN 106285605B CN 201610941194 A CN201610941194 A CN 201610941194A CN 106285605 B CN106285605 B CN 106285605B
- Authority
- CN
- China
- Prior art keywords
- drilling
- freeze thawing
- coal seam
- microwave
- liquid nitrogen
- 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.)
- Active
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000003245 coal Substances 0.000 title claims abstract description 46
- 238000010257 thawing Methods 0.000 title claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 title claims abstract description 32
- 238000001028 reflection method Methods 0.000 title claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000005086 pumping Methods 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 6
- 230000005855 radiation Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000003795 desorption Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 230000035699 permeability Effects 0.000 claims abstract description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method, to one freeze thawing drilling of coal seam construction, and in freeze thawing drilling two mash gas pumping drillings of two sides construction.Microwave antenna, coaxial waveguide, water injection pipe and liquid nitrogen pipe are sent into together in freeze thawing drilling；Firstly, opening water injecting pump, filled the water into freeze thawing drilling；Then, liquid nitrogen pump is opened, the fluid injection nitrogen into freeze thawing drilling freezes hole Nei Shui for ice, fracturing coal seam；Finally, open microwave generator, the microwave of generation is reached microwave antenna and is drilled from microwave antenna to freeze thawing and radiated by rectangular waveguide, waveguide switch, coaxial waveguide, the ice in hole is set quickly to melt and gasify, high-temperature high-pressure steam continues fracturing coal seam, and gas constantly desorbs at high temperature and pours into mash gas pumping drilling along crack in coal.The present invention combines microwave radiation with frozen-thawed, substantially increases coal seam porosity, permeability, promotes desorption of mash gas, so that gas pumping effect be greatly improved, has wide applicability.
Description
Technical field
The present invention relates to a kind of microwave liquid nitrogen to cooperate with freeze thawing coal seam anti-reflection method, belongs to the anti-reflection the relevant technologies neck of underground coal mine
Domain is particularly suitable for soft high gas layer.
Background technique
In coal gas be both one of underground coal mine danger source and a kind of clean energy resource, the underground extraction of gas can
It effectively eliminates gas accident to threaten and developed and used, however, China coal seam has the spy of high absorption, micropore, hyposmosis
Point, gas drainage is difficult, and gas accident takes place frequently.The anti-reflection measure in many coal seams is developed both at home and abroad, and such as: hydraulic fracturing, waterpower are cut
Seam, hydraulic flushing in hole, control explosion etc., in recent years, are gradually developed using the coal seam freeze thawing fracturing technology of waterpower phase transformation, however, freezing
Knot coal seam will certainly reduce coal seam temperature, seriously inhibit desorption of mash gas, meanwhile, ice room temperature in conventional freeze-thaw technology melt compared with
Slowly, the residual moisture in coal can also cause water-blocking effect, block gas migration channel, these are all unfavorable for gas drainage.Therefore,
It needs to study a kind of new technique, is able to solve the technical bottleneck of coal seam freeze thawing.
Summary of the invention
Technical problem: the purpose of the present invention is overcoming shortcoming present in prior art, provide a kind of method it is simple,
The microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method of gas drainage efficiency can be greatly improved.
Technical solution: microwave liquid nitrogen of the invention cooperates with freeze thawing coal seam anti-reflection method, comprising the following steps:
A, it to one freeze thawing drilling of coal seam construction in tunnel, and is bored in freeze thawing drilling two gas drainages of two sides construction
The both ends of hole, freeze thawing drilling and mash gas pumping drilling are located in top plate and bottom plate；
B, it is sent into drainage tube into mash gas pumping drilling, be sent into water injection pipe, liquid nitrogen pipe into freeze thawing drilling and is connected with microwave
The coaxial waveguide of antenna is later sealed freeze thawing drilling and mash gas pumping drilling using hole packer；
C, the outer end of coaxial waveguide is connected on waveguide switch, waveguide switch occurs through rectangular waveguide and microwave
Device is connected；The outer end of water injection pipe is connected with water injecting pump, water injecting pump is connect through pipeline with water tank；By the outer end of liquid nitrogen pipe
Portion is connected with liquid nitrogen pump, and liquid nitrogen pump is connect through pipeline with liquid nitrogen container；
D, after the completion of piping connection, water injecting pump is opened, is filled the water into freeze thawing drilling, the pass when filling the water pump pressure and beginning to ramp up
Water injecting pump is closed, water filling is stopped；
E, liquid nitrogen pump is opened, the fluid injection nitrogen into freeze thawing drilling freezes water in injection hole for ice, fracturing coal seam；
F, microwave generator is opened, the microwave of generation reaches microwave day by rectangular waveguide, waveguide switch, coaxial waveguide
Line is simultaneously radiated from microwave antenna into freeze thawing drilling, so that the ice in hole is quickly melted and is gasified, generated high-temperature high pressure water steams
Gas continues fracturing coal seam, and gas constantly desorbs at high temperature and pours into mash gas pumping drilling along crack in coal；
G, step e~f is repeated, gas drainage pipe is connect with fire damp pipe network, carries out gas drainage.
The working frequency of the microwave generator is 2.45GHz, power 2kW.
The freeze thawing drilling is 3.5-4.5m at a distance from mash gas pumping drilling.
The utility model has the advantages that freeze thawing combines the present invention with coal seam by microwave radiation, after coal seam freezing fracturing, microwave spoke is utilized
Heating coal seam is penetrated, ice is made to melt and gasify rapidly, high-temperature high-pressure steam continues fracturing coal seam, and gas constantly solves at high temperature
It inhales, this invention removes water-blocking effects, substantially increase coal seam porosity, permeability, promote desorption of mash gas, thus significantly
Gas pumping effect is improved, there is wide applicability in the art.
Detailed description of the invention
Fig. 1 is microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method arrangement schematic diagram of the invention.
In figure: the coal seam 1-, 2- freeze thawing drilling, 3- mash gas pumping drilling, 4- top plate, 5- bottom plate, 6- drainage tube, 7- microwave day
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.
Specific embodiment
One embodiment of the present of invention is further described with reference to the accompanying drawing:
As shown in Figure 1, microwave liquid nitrogen of the invention cooperates with freeze thawing coal seam anti-reflection method, comprising the following steps:
Firstly, to one freeze thawing drilling 2 of the construction of coal seam 1 in tunnel, and construct at 2 two sides 3.5-4.5m of freeze thawing drilling
The both ends of two mash gas pumping drillings 3, freeze thawing drilling 2 and mash gas pumping drilling 3 are located in top plate 4 and bottom plate 5.By extraction
6 one end of pipe be sent into mash gas pumping drilling 3, microwave antenna 7 is connect with coaxial waveguide 8, and by microwave antenna 7, coaxial waveguide 8,
Water injection pipe 9 and liquid nitrogen pipe 10 be sent into together freeze thawing drilling 2 in, using hole packer 11 to freeze thawing drilling 2 and mash gas pumping drilling 3 into
Row sealing.Meanwhile the outer end of coaxial waveguide 8 is connected into waveguide switch 12, waveguide switch 12 is connect with rectangular waveguide 13,
Rectangular waveguide 13 is connect with microwave generator 14, wherein the working frequency of microwave generator 10 is 2.45GHz, power 2kW.
In addition, the outer end of water injection pipe 9 is connected water injecting pump 15, water injecting pump 15 is connect 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 connect with liquid nitrogen container 18.After the completion of piping connection, water injecting pump 15 is opened, to freeze thawing drilling 2
Water injecting pump 15 is closed in interior water filling when 15 pressure of water injecting pump is begun to ramp up, and stops water filling.At this point, liquid nitrogen pump 17 is opened, to freeze thawing
Fluid injection nitrogen in drilling 2 freezes hole Nei Shui for ice, fracturing coal seam 1, later, opens microwave generator 14,14 institute of microwave generator
The microwave of generation by rectangular waveguide 13, waveguide switch 12, coaxial waveguide 8 reaches microwave antenna 7 and from microwave antenna 7 to jelly
Melt 2 radiation of drilling, so that the ice in hole is quickly melted and is gasified, high-temperature high-pressure steam continues fracturing coal seam 1, and gas is at high temperature
It constantly desorbs and pours into mash gas pumping drilling 3 along crack in coal, gas drainage pipe 6 is connect with fire damp pipe network, carry out
Gas drainage.
Claims (1)
1. a kind of microwave liquid nitrogen cooperates with freeze thawing coal seam anti-reflection method, which is characterized in that by microwave radiation, with coal seam, freeze thawing is combined,
After coal seam freezing fracturing, coal seam is heated using microwave radiation, so that ice is melted and is gasified rapidly, high-temperature high-pressure steam continues to cause
Coal seam is split, gas constantly desorbs at high temperature, eliminates water-blocking effect, improves coal seam porosity, permeability, promotes gas
Desorption, to improve gas drainage rate, the specific steps are as follows:
A, it to one freeze thawing drilling (2) of coal seam (1) construction in tunnel, and constructs at freeze thawing drilling (2) two sides 3.5-4.5m
The both ends of two mash gas pumping drillings (3), freeze thawing drilling (2) and mash gas pumping drilling (3) are located at top plate (4) and bottom plate
(5) in；
B, drainage tube (6) are sent into mash gas pumping drilling (3), water injection pipe (9), liquid nitrogen pipe is sent into freeze thawing drilling (2)
(10) and it is connected with the coaxial waveguides (8) of microwave antenna (7), later using hole packer (11) to freeze thawing drilling (2) and gas drainage
Drilling (3) is sealed；
C, the outer end of coaxial waveguide (8) is connected on waveguide switch (12), 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 connect 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) connection；The working frequency of the microwave generator (14) is 2.45 GHz, and power is 2 kW;
D, it after the completion of piping connection, opens water injecting pump (15), the water filling into freeze thawing drilling (2), when water injecting pump (15), pressure starts
Water injecting pump (15) are closed when rising, stop water filling；
E, liquid nitrogen pump (17) are opened, to freeze thawing drilling (2) interior fluid injection nitrogen, water in injection hole is freezed as ice, fracturing coal seam (1)；
F, microwave generator (14) are opened, microwave caused by microwave generator (14) passes through rectangular waveguide (13), waveguide transitions
Device (12), coaxial waveguide (8) reach microwave antenna (7) and the radiation into freeze thawing drilling (2) from microwave antenna (7), make in hole
Ice quickly melts and gasifies, and generated high-temperature high-pressure steam continues fracturing coal seam (1), and gas constantly desorbs simultaneously at high temperature
Mash gas pumping drilling (3) are poured into along crack in coal；
G, step e ~ f is repeated, gas drainage pipe (6) is connect with fire damp pipe network, carries out gas drainage.
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 CN106285605A (en) | 2017-01-04 |
| CN106285605B true 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) |
Families Citing this family (28)
| 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 |
| CN106869991B (en) * | 2017-03-06 | 2019-02-19 | 中国矿业大学 | A kind of coal body anti-reflection method of microwave hot air coupling heat injection |
| 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 |
| CN106988719B (en) * | 2017-05-09 | 2023-04-25 | 河南理工大学 | Anti-reflection system and anti-reflection method for circularly injecting hot water and liquid nitrogen into coal seam |
| CN107762473B (en) * | 2017-09-28 | 2019-07-02 | 徐州工程学院 | Method for increasing coal permeability through freeze-thaw cycle of liquid nitrogen and high-temperature nitrogen |
| 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 |
| 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 |
| 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 |
| 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 |
| CN110617047B (en) * | 2019-10-21 | 2021-06-04 | 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 |
| 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 |
| 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 |
| CN111980651B (en) * | 2020-07-24 | 2022-03-29 | 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 |
| 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 |
| CN112855246B (en) * | 2021-03-12 | 2022-08-19 | 山东科技大学 | Automatic coal seam water injection equipment and method based on ultrasonic wave and microwave synergistic effect |
| CN112901118B (en) * | 2021-03-18 | 2023-01-13 | 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 |
| CN114856565B (en) * | 2022-06-09 | 2023-03-28 | 中国矿业大学 | Coal seam fracturing device and fracturing method |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362538B (en) * | 2013-07-15 | 2015-04-22 | 中国矿业大学 | Coal seam cutting, fracturing, pressure pumping and alternating gas extraction method |
| CN104533514B (en) * | 2015-01-12 | 2017-07-07 | 中国矿业大学 | Hot displacement type enhanced gas extraction method in one kind drilling |
| CN104963674B (en) * | 2015-07-17 | 2018-03-02 | 煤炭科学技术研究院有限公司 | Hypotonic coal seam frozen-thawed cracking anti-reflection method |
| CN105134284B (en) * | 2015-08-03 | 2017-05-31 | 中国矿业大学 | One kind is based on horizontal orientation drilling liquid nitrogen circulating freezing resistance anti-reflection mash gas extraction method |
| CN105507812B (en) * | 2015-12-29 | 2017-08-11 | 中国矿业大学 | Waterpower hole-punching method is vaporized in a kind of microwave radiation hole |
| CN105507872B (en) * | 2015-12-31 | 2017-11-17 | 河南理工大学 | Hydraulic flushing in hole combines anti-reflection extraction system with presplit blasting in layer-through drilling |
-
2016
- 2016-11-01 CN CN201610941194.4A patent/CN106285605B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106285605A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106285605B (en) | A kind of microwave liquid nitrogen collaboration freeze thawing coal seam anti-reflection method | |
| CN108361061B (en) | Low permeability coal seam electric detonation and microwave-assisted liquid nitrogen freeze thawing anti-reflection device and method | |
| CN104632270B (en) | A kind of oscillating impulse formula high enegry gas fracturing and heat injection alternation mash gas extraction method | |
| CN106285604B (en) | Microwave-assisted supercritical carbon dioxide cyclic fracturing system and method | |
| CN108397182B (en) | Device and method for enhancing permeability of coal seam through electric pulse and liquid nitrogen freeze thawing | |
| CN104265354B (en) | A kind of low air permeability coal seam waterpower phase transformation fracturing strengthening gas pumping method | |
| CN109915199B (en) | Progressive permeability-increasing coal seam reinforced gas extraction device and use method thereof | |
| CN107762473B (en) | Method for increasing coal permeability through freeze-thaw cycle of liquid nitrogen and high-temperature nitrogen | |
| CN106988719B (en) | Anti-reflection system and anti-reflection method for circularly injecting hot water and liquid nitrogen into coal seam | |
| CN104213932B (en) | A kind of projecting coal bed waterpower phase transformation fracturing coal uncovering method | |
| CN212003131U (en) | Enhanced gas extraction system applying hot steam and microwave radiation in cooperation with permeability-increasing coal seam | |
| CN105134284A (en) | Gas extraction method based on horizontal orientation boring liquid nitrogen cycle freeze-thaw anti-reflection | |
| CN109854210A (en) | Using the gas pumping method and extraction system of liquid nitrogen and steam fracturing coal seam | |
| CN105507871A (en) | Horizontal well liquid nitrogen ice crystal temperature plugging staged fracturing method for coalbed methane | |
| CN110173246A (en) | A kind of water-liquid nitrogen method that alternately heating rate is adopted in tired pressure break hot dry rock raising | |
| CN208168927U (en) | Hypotonic coal seam electric detonation shake and microwave-assisted frozen-thawed permeability improvement device | |
| CN209855850U (en) | Enhanced gas extraction device for step-by-step permeability-increasing coal seam | |
| CN107476794A (en) | Method for increasing coal gas permeability by injecting high-temperature nitrogen after liquid nitrogen gasification circulation | |
| CN112412415B (en) | Hydraulic punching, freezing fracturing and heat injection stimulation synergistic permeability-increasing pumping-promoting method | |
| CN105525901A (en) | Coal seam hydrofracture strengthening permeability increasing method based on microwave irradiation | |
| CN106869991B (en) | A kind of coal body anti-reflection method of microwave hot air coupling heat injection | |
| CN110056355A (en) | Rush that Frozen-thawed cycled is anti-reflection takes out safe and efficient coal uncovering method | |
| CN104847322A (en) | Method for improving recovery efficiency for deep common thickened oil water drive-converting into-steam flooding | |
| CN207813598U (en) | It is a kind of to be motivated by ultrasound and hydraulic slotted liner technique integrated apparatus, complex intensifying gas drainage system | |
| CN103590835A (en) | PVC freezing pipe for shield tunneling freeze-consolidation |
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 |
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 |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |