CN109209327A - A kind of high yield water coalbed methane well group Active Drainage gas production method of communication barrier - Google Patents
A kind of high yield water coalbed methane well group Active Drainage gas production method of communication barrier Download PDFInfo
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- CN109209327A CN109209327A CN201811186914.6A CN201811186914A CN109209327A CN 109209327 A CN109209327 A CN 109209327A CN 201811186914 A CN201811186914 A CN 201811186914A CN 109209327 A CN109209327 A CN 109209327A
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- gully
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 43
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 230000004888 barrier function Effects 0.000 title claims abstract description 12
- 238000004891 communication Methods 0.000 title claims abstract description 11
- 239000003245 coal Substances 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000003325 tomography Methods 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 4
- 150000001336 alkenes Chemical class 0.000 claims 4
- 238000006243 chemical reaction Methods 0.000 claims 4
- 239000007789 gas Substances 0.000 claims 4
- 238000007037 hydroformylation reaction Methods 0.000 claims 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims 2
- 239000003446 ligand Substances 0.000 claims 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims 2
- BWHDROKFUHTORW-UHFFFAOYSA-N tritert-butylphosphane Chemical compound CC(C)(C)P(C(C)(C)C)C(C)(C)C BWHDROKFUHTORW-UHFFFAOYSA-N 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 239000003426 co-catalyst Substances 0.000 claims 1
- 150000001868 cobalt Chemical class 0.000 claims 1
- 229940011182 cobalt acetate Drugs 0.000 claims 1
- 229910021446 cobalt carbonate Inorganic materials 0.000 claims 1
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 claims 1
- RCNBUSVJYDRQCN-UHFFFAOYSA-N cobalt(3+);pentane-2,4-dione Chemical compound [Co+3].CC(=O)CC(C)=O RCNBUSVJYDRQCN-UHFFFAOYSA-N 0.000 claims 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 claims 1
- BKFAZDGHFACXKY-UHFFFAOYSA-N cobalt(II) bis(acetylacetonate) Chemical compound [Co+2].CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O BKFAZDGHFACXKY-UHFFFAOYSA-N 0.000 claims 1
- PFQLIVQUKOIJJD-UHFFFAOYSA-L cobalt(ii) formate Chemical compound [Co+2].[O-]C=O.[O-]C=O PFQLIVQUKOIJJD-UHFFFAOYSA-L 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 claims 1
- TUQOTMZNTHZOKS-UHFFFAOYSA-N tributylphosphine Chemical compound CCCCP(CCCC)CCCC TUQOTMZNTHZOKS-UHFFFAOYSA-N 0.000 claims 1
- DAGQYUCAQQEEJD-UHFFFAOYSA-N tris(2-methylpropyl)phosphane Chemical compound CC(C)CP(CC(C)C)CC(C)C DAGQYUCAQQEEJD-UHFFFAOYSA-N 0.000 claims 1
- 238000003795 desorption Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 235000019738 Limestone Nutrition 0.000 description 7
- 239000006028 limestone Substances 0.000 description 7
- 238000005065 mining Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 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
- E21B43/006—Production of coal-bed methane
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of high yield water coalbed methane well group Active Drainage gas production methods of communication barrier, this method is to provide well group first, it include gully and producing well in the well group, the gully is located on the hydraulic fracture channel linked up with tomography, then it is drained using the gully, other wells in well group carry out gas production as producing well, and guarantee that the bottom pressure gesture of the gully is consistently lower than the producing well bottom pressure gesture, this, which is equivalent on hydraulic fracture, is provided with one of water proof barrier, make the production district of water flooding in water layer from the gully output to not invaded coal layer gas reservoir deep.The present invention can prevent the production district of water flooding invaded coal layer depths, and the coal bed gas being adsorbed in coal petrography is made persistently to carry out depressurization desorption, to improve coal seam gas production well group gas production.
Description
Technical field
The present invention relates to the discharge and mining methods that the big volume production water of coalbed methane well group is caused after a kind of hydraulic fracture communication barrier, especially
It is to be related to tomography and top plate or the communication of bottom plate limestone water layer, a large amount of stratum water immersions coal seam causes coal bed gas well to be largely discharged
Coalbed methane well group discharge and mining method.This method can prevent water flooding invaded coal layer deep, enable the coal bed gas being adsorbed in coal petrography
It carries out continuing depressurization desorption, improves Production of Coal-bed Gas Wells.
Background technique
Coal bed gas is mainly present in coal seam with ADSORPTION STATE, general to be exploited by decompression.Rich coal resources in China,
Coal bed gas resource reserves of the preservation in coal seam are huge.Coal bed gas is opened as a kind of clean unconventional gas resource, exploration
Hair prospect is tempting.In recent years, China is in the provinces such as Shanxi, Shaanxi, Xinjiang, Guizhou, Sichuan, Henan Devoting Major Efforts To Developing coal bed gas resource,
And preferable development effectiveness being achieved, but with the progress of exploitation, some problems in production are exposed, and wherein coal seam is linked up
Water layer, water yield is big, and it is to compare distinct issues that reservoir, which cannot continue decompression,.Generally there are some tomographies in stratum, tomography is cut
The water layer on coal seam and top plate or bottom plate is cut, after pressure alters these tomographies in hydraulic fracturing process, coal seam and water layer are linked up, meeting
It causes a large amount of stratum water sources source constantly to enter coal seam, prevents coal seam pressure from being reduced to critical desorption pressures hereinafter, being adsorbed on
Coal bed gas in coal petrography can not desorb.
In general, coalbed methane well group is developed using collecting well group, oriented by the well pattern shapes cloth such as plum blossom-shaped or square
Well.For fine and close coal seam, need to carry out hydraulic fracturing.When fractured well detachment layer is closer, easy pressure alters tomography, causes waterpower
Crack communication barrier, then the water flooding in water layer can enter coal seam along tomography, cause coal seam that can not be depressured exploitation.
In view of the above-mentioned problems, being solved at present there are mainly two types of method: one is carrying out water blockoff, although this method can be with
Closure exhalant canal, but closure direction more difficult to control, coal seam can also be blocked by being likely to result in while blocking water layer, make coal seam
Gas well cannot produce gas；Another method is that progress is hydrophobic, after water flows into coal bed gas pit shaft, water is discharged, to make coal bed gas
It is flowed out simultaneously with water, but this method is passive draining, efficiency is lower.
China Patent Publication No. are as follows: 102926732 A of CN provides a kind of cbm development in top plate High water cut coal seam
Well-arranging procedure, this method are to drain in well pattern center cloth a bite pumped well to the High water cut ash rock stratum in roof
To reduce the pressure of top plate ash rock stratum.This method is directed to the relatively small limestone formation of water content, can obtain preferable effect,
If the water body of limestone water layer is larger, drainage and step-down difficulty is big, and at high cost.
Summary of the invention
The object of the present invention is to provide a kind of coalbed methane well group water pumping gas production method of communication barrier, this method is actively to arrange
Just water was discharged before water flooding not yet invaded coal layer production district for water, and this method is high-efficient, can increase substantially coal bed gas
Well production.
The technical solution adopted by the present invention is that: a kind of high yield water coalbed methane well group Active Drainage gas production side of communication barrier
Method, this method are to provide well group first, include gully and producing well in the well group, the gully is located at and tomography is linked up
Hydraulic fracture channel on, then drained using the gully, other wells in well group as producing well carry out gas production,
And guarantee that the bottom pressure gesture of the gully is consistently lower than the producing well bottom pressure gesture, make water flooding in water layer from institute
Gully output is stated to the production district in not invaded coal layer gas reservoir deep.
Among the above, the finishing drilling position of the gully and the producing well is the Sandy Silt of coal seam lower part, on coal seam
There are aqueous grey rock stratum for portion or lower part.
Among the above, the water layer is the aqueous grey rock stratum of coal seam top or lower part.
Among the above, it is contemplated that gully water is larger and might have coal dust output, should generally select centrifugal pump or spiral shell
Bar pump is drained.
Among the above, wellblock is produced for the ease of keeping gully regional stratum pressure potential to be lower than, it is desirable that gully and production
Well is respectively mounted pressure bomb, monitors bottom pressure in real time in process of production.
Present invention is generally directed to pressures in coal bed gas well hydraulic fracturing process to alter tomography, cause the water flooding in limestone to pass through disconnected
Layer invaded coal layer, prevents the problem of coal bed gas is from desorbing, and before water flooding not yet flows into production wellblock stratum, takes in waterpower
Cloth gully carries out drainage and step-down on fissure channel, and the stratum of hydraulic fracture passage area is made to form the area pressure Di Shi, and separate
Other production well areas of tomography form the area pressure Gao Shi, since fluid cannot flow to the area Gao Shi from the area Di Shi, thus quite
In being provided with one of water proof barrier on hydraulic fracture, so that water flooding be prevented to invade to coal seam production district, it is ensured that coal bed gas solution
It inhales.
Beneficial effects of the present invention:
Cloth a bite gully on the hydraulic fracture channel linked up with tomography, keeps the water flooding to come via tomography straight from gully
Run in out, to prevent the production district of water flooding invaded coal layer depths, coal bed gas is allow to go on smoothly depressurization desorption, improve coal
Layer gas production well group gas production.
Detailed description of the invention
Fig. 1 is coalbed methane well group water pumping gas production scheme diagrammatic cross-section (water layer is located at coal seam top) of the invention, in figure
The flow direction of arrow expression water flooding.
Fig. 2 is coalbed methane well group water pumping gas production scheme diagrammatic cross-section (water layer is located at coal seam lower part) of the invention, in figure
The flow direction of arrow expression water flooding.
Fig. 3 is coalbed methane well group water pumping gas production plan schematic diagram of the invention, and arrow indicates flow direction.
In figure: 1- tomography；2- gully；3- producing well；The aqueous grey rock stratum 4-；5- hydraulic fracture；6- Sandy Silt Layer；7-
Coal seam.
Specific embodiment
In conjunction with Fig. 1, Fig. 2 and Fig. 3, specific embodiments of the present invention will be further explained:
Embodiment one:
Referring to Fig.1, Fig. 3, a kind of high yield water coalbed methane well group Active Drainage gas production method of communication barrier provided by the invention should
Method is to provide well group first, includes gully 2 and producing well 3 in the well group, wherein the finishing drilling of gully 2 and producing well 3
Position is the Sandy Silt Layer 6 of 7 bottom of coal seam, and aqueous ash rock stratum 4 is located at 7 top of coal seam, and gully 2 is pacified with producing well 3
Fill pressure bomb, gully 2 is located on the channel for the hydraulic fracture 5 linked up with tomography 1, tomography 1 through aqueous grey rock stratum 4,
Sandy Silt Layer 6 and coal seam 7, are then drained using gully 2, and gully 2 uses centrifugal pump or screw rod pump drainage, well
Other wells in group carry out gas production as producing well 3, the bottom pressure of gully 2 and producing well 3 by adjusting drainage rates with
Gas recovery velocity is controlled, and is always ensured that the bottom pressure gesture of gully 2 lower than producing well 3 bottom pressure in production process
Gesture makes 2 regional stratum low-pressure gesture area of gully, and 3 regional stratum of producing well is high pressure gesture area, makes the water flooding in water layer
From specified 2 output of gully to the production district in not 7 deep of invaded coal layer, it is ensured that coal seam 7 can be effectively depressured, and allowed and be adsorbed on
Coal bed gas in coal petrography persistently desorbs.
Embodiment two:
Referring to Fig. 2, Fig. 3, a kind of high yield water coalbed methane well group Active Drainage gas production method of communication barrier provided by the invention should
Method is to provide well group first, includes gully 2 and producing well 3 in the well group, wherein the finishing drilling of gully 2 and producing well 3
Position is the Sandy Silt Layer 6 of 7 bottom of coal seam, and aqueous ash rock stratum 4 is located at 7 lower part of coal seam, and gully 2 is pacified with producing well 3
Fill pressure bomb, gully 2 be located at tomography 1 link up hydraulic fracture 5 channel on, tomography 1 through Sandy Silt Layer 6,
Coal seam 7 and aqueous grey rock stratum 4, are then drained using gully 2, gully 2 uses centrifugal pump or screw rod pump drainage, well
Other wells in group carry out gas production as producing well 3, the bottom pressure of gully 2 and producing well 3 by adjusting drainage rates with
Gas recovery velocity is controlled, and is always ensured that the bottom pressure gesture of gully 2 lower than producing well 3 bottom pressure in production process
Gesture makes 2 regional stratum low-pressure gesture area of gully, and 3 regional stratum of producing well is high pressure gesture area, makes the water flooding in water layer
From specified 2 output of gully to the production district in not 7 deep of invaded coal layer, it is ensured that coal seam 7 can be effectively depressured, and allowed and be adsorbed on
Coal bed gas in coal petrography persistently desorbs.
Application examples:
The area Sichuan Shu Nan, coal-bed gas exploitation floor position are Permian Longtan group 2, No. 3, No. 7, No. 8 coal seams, and Lungtan Formation lower part is
Emeishan Basalt Formation and Mao Kou group, Emeishan Basalt Formation are celadon basalt, and Mao Kou group is huge thick-layer shape limestone, rich
It is aqueous extremely strong；Lungtan Formation top is Triassic System Feixianguan group, and flying celestial being pass group is mud stone, silty.Mature fault in area.Area
Interior X well group is the plum blossom-shaped distribution of 4 mouthfuls of directional well (respectively X-1, X-2, X-3, X-4 well) combinations, and X well group is located at tomography FyIt is attached
Closely, tomography FyLungtan Formation coal seam, Emeishan Basalt Formation basalt and Mao Kou group limestone are cut, the X-1 well in well group is being pressed
Pressure has altered tomography during splitting, and Mao Kou group limestone and Lungtan Formation coal seam is caused to be linked up.In the early stage in production, X-1 well uses tubular type
Pump presses daily 22m3The displacement of/d is drained, but bottom pressure can not reduce.And producing well X-2, X-3, X-4 in well group
Bottom pressure can slowly decline after well carries out mining, but water yield continues to increase, and average gas output per well rises to 1300m3/
Tubing pump can no longer meet dewatering needs, the gas production decline of producing well after d.Embodiment of the present invention is used afterwards, to X-1
The latent centrifugal pump of well replacement electricity, takes huge discharge (water yield 60m3/ d) active forced-ventilated water is carried out, and remain the well of X-1 well
Bottom pressure is lower than the bottom pressure of producing well X-2, X-3, X-4 well.After mining after a period of time, producing well X-2, X-3, X-
The average gas output per well of 4 wells gradually rises to 4600m3/ d, and the average individual well water yield of this 3 mouthfuls of producing wells drops to 7m3/
d.Effect of increasing production is obvious.
The present invention according to geologic information, hydraulic fracturing data, mining data and hydro-chemical analysis, analyze water layer,
The connected relation of tomography, hydraulic fracture formulates Active Drainage method according to connected relation, makes water flooding in water layer from specified
Gully output to not invaded coal layer gas reservoir deep production district, it is ensured that coal seam can be effectively depressured, and allowed and be adsorbed in coal petrography
Coal bed gas persistently desorb.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of high yield water coalbed methane well group Active Drainage gas production method of communication barrier, which is characterized in that this method is first
Well group is provided, includes gully and producing well in the well group, the gully is located at the hydraulic fracture channel linked up with tomography
On, it is then drained using the gully, other wells in well group carry out gas production as producing well, and guarantee the draining
The bottom pressure gesture of well is consistently lower than the producing well bottom pressure gesture, make water flooding in water layer from the gully output from
Without the production district in invaded coal layer gas reservoir deep.
2. the autoclave intermittent reaction method that a kind of olefin hydroformylation according to claim 1 prepares alcohol, which is characterized in that
Co catalysts are that cobaltous formate, cobalt acetate, cobalt carbonate, acetylacetone cobalt (II) or acetylacetone cobalt (III) etc. are known in the industry organic
Cobalt salt.
3. the autoclave intermittent reaction method that a kind of olefin hydroformylation according to claim 1 prepares alcohol, which is characterized in that
Phosphine ligands are the phosphorus ligands known in the industry such as tributylphosphine, tri isobutyl phosphine, tri-tert-butylphosphine or triphenylphosphine.
4. the autoclave intermittent reaction method that a kind of olefin hydroformylation according to claim 1 prepares alcohol, which is characterized in that
Adjust tonifying Qi ratio with the following method: the initial volume of CO and hydrogen mixed gas ratio 3:1-1:2 reacts 2h, body in holding system
Product reacts 3h than being 1/2-1 times of initial proportion, volume ratio be the 1/3-1/2 of initial proportion react to system pressure no longer under
Drop.
5. the autoclave intermittent reaction method that a kind of olefin hydroformylation according to claim 1 prepares alcohol, which is characterized in that
System, which vacuumizes, sets inflated with nitrogen displacement 5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186914.6A CN109209327B (en) | 2018-10-12 | 2018-10-12 | Active drainage gas production method for high-water-yield coal bed gas well group of communication fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186914.6A CN109209327B (en) | 2018-10-12 | 2018-10-12 | Active drainage gas production method for high-water-yield coal bed gas well group of communication fault |
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| Publication Number | Publication Date |
|---|---|
| CN109209327A true CN109209327A (en) | 2019-01-15 |
| CN109209327B CN109209327B (en) | 2020-10-23 |
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| CN201811186914.6A Expired - Fee Related CN109209327B (en) | 2018-10-12 | 2018-10-12 | Active drainage gas production method for high-water-yield coal bed gas well group of communication fault |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112431578A (en) * | 2020-12-02 | 2021-03-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for extracting mine gas from low-permeability coal seam containing fault |
| CN113565481A (en) * | 2020-04-28 | 2021-10-29 | 中国石油化工股份有限公司 | Method for exploiting reservoir bodies in fractured zone |
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| CN102926732A (en) * | 2012-10-12 | 2013-02-13 | 唐书恒 | Coalbed methane developing and well spacing method for high-water content coal reservoir of head plate |
| US20130116993A1 (en) * | 2010-07-26 | 2013-05-09 | Serguei Maliassov | Method and System For Parallel Multilevel Simulation |
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| CN107152302A (en) * | 2017-06-29 | 2017-09-12 | 重庆大学 | Cut the uniform permeability-increasing gas pumping method of pressure in a kind of complex geological structure coal seam |
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2018
- 2018-10-12 CN CN201811186914.6A patent/CN109209327B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| US20130116993A1 (en) * | 2010-07-26 | 2013-05-09 | Serguei Maliassov | Method and System For Parallel Multilevel Simulation |
| CN102086774A (en) * | 2011-01-17 | 2011-06-08 | 中联煤层气国家工程研究中心有限责任公司 | Drainage method of gas in coal bed |
| CN102926732A (en) * | 2012-10-12 | 2013-02-13 | 唐书恒 | Coalbed methane developing and well spacing method for high-water content coal reservoir of head plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565481A (en) * | 2020-04-28 | 2021-10-29 | 中国石油化工股份有限公司 | Method for exploiting reservoir bodies in fractured zone |
| CN112431578A (en) * | 2020-12-02 | 2021-03-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for extracting mine gas from low-permeability coal seam containing fault |
| CN112431578B (en) * | 2020-12-02 | 2022-07-29 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for extracting mine gas from low-permeability coal seam containing fault |
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| CN109209327B (en) | 2020-10-23 |
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