CN106677746A - Method for coal bed gas exploitation of full working face through down-hole system - Google Patents
Method for coal bed gas exploitation of full working face through down-hole system Download PDFInfo
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- CN106677746A CN106677746A CN201710007571.1A CN201710007571A CN106677746A CN 106677746 A CN106677746 A CN 106677746A CN 201710007571 A CN201710007571 A CN 201710007571A CN 106677746 A CN106677746 A CN 106677746A
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- well
- horizontal well
- water horizontal
- vertical
- coal bed
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Classifications
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- 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
- E21B43/006—Production of coal-bed methane
Abstract
The invention provides a method for coal bed gas exploitation of a full working face through a down-hole system. The method comprises the following steps that a plurality of vertical wells are dug in the positions, a preset distance away from a main roadway along the full working face, on the ground, and all the vertical wells penetrate through a coal mine layer; horizontal wells are dug, the horizontal well sections of the horizontal wells are located in the coal mine layer, and the left-right deviation distances, relative to the vertical wells, of the horizontal well sections are between 0.3 m and 0.6 m; after the ground horizontal wells and the vertical wells are all completed, a down-hole horizontal well is dug in the main roadway along the coal mine layer, and the left-right deviation distance, relative to the vertical well nearest the main roadway, of the down-hole horizontal well is between 0.3 m and 0.6 m; a control pipe line is mounted on a well mouth of the down-hole horizontal well; cavity expansion is conducted on coal mine layer sections allowing the vertical wells to penetrate through reamer bits, and all the ground horizontal wells and the down-hole horizontal well communicate with all the vertical wells; and coal gas exploitation of the down-hole full working face is conducted through the control pipe line mounted on the well mouth of the down-hole horizontal well. According to the method for coal bed gas exploitation of the full working face through the down-hole system, the problem that pumping and drainage of the full working face cannot be achieved in the exploitation process of coal bed gas is solved.
Description
Technical field
The present invention relates to the technical field of coal-bed gas exploitation, in particular to a kind of full face downhole system is utilized
The method of exploiting coal bed methane.
Background technology
At present, the method one that mineral diagram pump drainage is adopted is that down-hole is dug a well in down-hole pump drainage, and one is in ground drilling
Implement ground pump drainage, both approaches cannot realize the pump drainage of full face.
The content of the invention
Present invention is primarily targeted at a kind of method of full face using downhole system exploiting coal bed methane is provided, to solve
Coal bed gas certainly of the prior art cannot realize the problem of the pump drainage of full face in recovery process.
To achieve these goals, the invention provides a kind of full face utilizes the side of downhole system exploiting coal bed methane
Method, including：Step S10：Multiple Vertical Wells are beaten along full face preset distance in the big lane of ground distance, and carries out completion, it is each perpendicular
Straight well passes through colliery layer；Step S20：Beat surface water horizontal well, the net horizontal section of surface water horizontal well in colliery layer, surface water horizontal well
The left-right deviation distance of net horizontal section and each Vertical Well is between 0.3 meter to 0.6 meter；Step S30：Surface water horizontal well and Vertical Well
After being fully completed, a mine water horizontal well is made a call to along colliery layer in Zai Cong great lanes, mine water horizontal well is left with away from the nearest Vertical Well in big lane
Right offset distance is between 0.3 meter to 0.6 meter；Step S40：Control pipeline is installed in the well head of the mine water horizontal well in big lane；Step
Rapid S50：The colliery interval passed through in each Vertical Well by reaming bit expands chamber, by surface water horizontal well and mine water horizontal well and each perpendicular
Straight well is connected；Step S60：The control pipeline installed by the well head of the mine water horizontal well in big lane carries out down-hole full face coal
Gas is exploited.
Further, in step slo, preset distance is more than 800 meters.
Further, screen casing is entered under being included in surface water horizontal well in step S20.
Further, surface water horizontal well is arranged on 1/3 depth from top to bottom of colliery layer.
Further, screen casing is entered under being included in step s 30 in mine water horizontal well.
Further, in step s 30, after surface water horizontal well and each Vertical Well are fully completed, along colliery in Zai Cong great lanes
Layer makes a call to a mine water horizontal well, mine water horizontal well and away from the nearest Vertical Well left-right deviation distance in big lane 0.3 meter to 0.6 meter it
Between.
Further, in step s 40, the mine water horizontal well well head in big lane installs control pipeline, sets on control pipeline
It is equipped with valve mechanism.
Further, in step s 50, in each Vertical Well under enter reaming bit, and each Vertical Well is carried out expanding chamber with
Each Vertical Well is set to connect with surface water horizontal well and mine water horizontal well.
Further, in step s 50, the diameter of reaming bit is between 0.5 meter to 0.8 meter.
Further, in step S60, valve mechanism is opened, is installed by the well head of the mine water horizontal well in big lane
Control pipeline carries out the coal gas exploitation of down-hole full face.
Using technical scheme, first, beat multiple vertical along full face preset distance in the big lane of ground distance
Well, and completion is carried out, each Vertical Well passes through colliery layer；Then, fetch water horizontal well, the net horizontal section of horizontal well is in colliery layer, level
The left-right deviation distance of the net horizontal section of well and each Vertical Well is between 0.3 meter to 0.6 meter；Surface water horizontal well and Vertical Well whole
After the completion of, a mine water horizontal well is made a call to along colliery layer in Zai Cong great lanes, mine water horizontal well is inclined with away from nearest Vertical Well in big lane or so
Gap is between 0.3 meter to 0.6 meter；Control pipeline is installed in the well head of the mine water horizontal well in big lane；Pass through reaming bit again
Expand chamber in each Vertical Well, horizontal well and mine water horizontal well are connected with each Vertical Well；Finally can just utilize the mine water in big lane
The control pipeline that the well head of horizontal well is installed carries out coal gas and exploits.The full face underground mining of coal bed gas can be so realized,
So expanding the limit of mining of colliery layer, and then solve coal bed gas of the prior art cannot realize entirely in recovery process
The problem of the pump drainage of work surface.Technical scheme efficiently solves coal bed gas of the prior art in recovery process
The problem of the pump drainage of full face cannot be realized.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the mining structure schematic diagram of the embodiment of the method for exploiting coal bed methane of the invention.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling：
10th, great Xiang；20th, Vertical Well；30th, surface water horizontal well；40th, mine water horizontal well；50th, pipeline is controlled.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
For the ease of description, space relative terms can be used here, such as " ... on ", " ... top ",
" in ... upper surface ", " above " etc., for describing such as a device or feature shown in the figure and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
To be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Now, it is more fully described with reference to the accompanying drawings according to an illustrative embodiment of the invention.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be appreciated that thesing embodiments are provided so that disclosure of the invention is thoroughly and complete, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, expands layer
With the thickness in region, and make to be presented with like reference characters identical device, thus description of them will be omitted.
As shown in figure 1, the method for the exploiting coal bed methane of the present embodiment includes：Step S10：In the big lane of ground distance along full work
Make face preset distance and beat multiple Vertical Wells, and carry out completion, each Vertical Well passes through colliery layer；Step S20：Surface water horizontal well is beaten,
In the layer of colliery, the net horizontal section of surface water horizontal well exists the net horizontal section of surface water horizontal well with the left-right deviation distance of each Vertical Well
Between 0.3 meter to 0.6 meter；Step S30：After surface water horizontal well and Vertical Well are fully completed, one is made a call to along colliery layer in Zai Cong great lanes
Mine water horizontal well, mine water horizontal well and away from the nearest Vertical Well left-right deviation distance in big lane between 0.3 meter to 0.6 meter；Step
S40：Control pipeline is installed in the well head of the mine water horizontal well in big lane；Step S50：Passed through in each Vertical Well by reaming bit
Colliery interval expands chamber, and all of surface water horizontal well and mine water horizontal well are connected with each Vertical Well；Step S50：By in big lane
The control pipeline installed of well head of mine water horizontal well carry out the exploitation of down-hole full face coal gas.
Using the technical scheme of the present embodiment, first, beat multiple perpendicular along full face preset distance in the big lane of ground distance
Straight well, and completion is carried out, each Vertical Well passes through colliery layer；Then, surface water horizontal well is beaten, the net horizontal section of surface water horizontal well is in coal
The left-right deviation distance of ore bed, the net horizontal section of surface water horizontal well and each Vertical Well is between 0.3 meter to 0.6 meter；Ground level
After well and Vertical Well are fully completed, a mine water horizontal well is made a call to along colliery layer in Zai Cong great lanes, mine water horizontal well is nearest with away from big lane
Vertical Well left-right deviation distance between 0.3 meter to 0.6 meter；Mine water horizontal well well head in big lane installs control pipeline；Again
Chamber is expanded in each Vertical Well by reaming bit, surface water horizontal well and mine water horizontal well are connected with each Vertical Well；It is last just to utilize
Can the control pipeline installed of mine water horizontal well well head in lane greatly carry out coal gas and exploit.The full work of coal bed gas can so be realized
Make face underground mining, so expand the limit of mining of colliery layer, and then solve coal bed gas of the prior art and exploiting
The problem of the pump drainage of full face cannot be realized in journey.The technical scheme of the present embodiment efficiently solves coal of the prior art
Layer gas cannot realize the problem of the pump drainage of full face in recovery process.
As shown in figure 1, in the technical scheme of the present embodiment, the well head of the mine water horizontal well 40 in big lane 10 installs control pipe
Line 50, on control pipeline 50 valve mechanism is provided with.The control pipe installed by the well head of the mine water horizontal well 40 in big lane 10
When line 50 carries out the coal gas exploitation of down-hole full face, valve mechanism is first opened.
As shown in figure 1, in the technical scheme of the present embodiment, in step slo, preset distance is more than 800 meters.Above-mentioned knot
Structure can mining level well section coal bed gas to greatest extent, again can be in the case of using existing control technology and equipment, smoothly
Mine water horizontal well in the follow-up big lane of construction.
As shown in figure 1, in the technical scheme of the present embodiment, the He of surface water horizontal well 30 is included in step S20 and S30
Enter screen casing under in mine water horizontal well 40.Screen casing is arranged in surface water horizontal well 30 and mine water horizontal well 40 and ensure that surface water horizontal well
30 and the safety of mine water horizontal well 40, such as screen casing is arranged in surface water horizontal well 30 and mine water horizontal well 40, surface water horizontal well
30 and mine water horizontal well 40 be not in situations such as caving in, in addition, be provided with multiple meshes on screen casing, such gas or liquid
Can be discharged in surface water horizontal well 30 and mine water horizontal well 40 by sieve aperture.
As shown in figure 1, in the technical scheme of the present embodiment, in step S20, surface water horizontal well 30 is multiple, and together
Surface water horizontal well 30 in one colliery layer expands chamber and is all interconnected eventually through Vertical Well 20.Said structure causes multiple surface water
Horizontal well 30 can be cascaded, even if the distance of multiple surface water horizontal wells 30 is distant can also to realize multiple surface water horizontal wells
Ganging up between 30.For example, when surface water horizontal well 30 is beaten, according to existing equipment and instrument ability, ground level is determined
Well 30 and the distance of nearest Vertical Well 20, using directional control technology, control surface water horizontal well 30 and nearest Vertical Well 20
Left-right deviation, surface water horizontal well 30 is further continued for horizontal drilling to second Vertical Well 20, control surface water horizontal well 30 and second
The left-right deviation of individual Vertical Well 20.Expand chamber finally by Vertical Well 20, surface water horizontal well 30 and Vertical Well 20 are all interconnected.
As shown in figure 1, in the technical scheme of the present embodiment, surface water horizontal well 30 be arranged on colliery layer from top to bottom
1/3 depth.Said structure enables coal bed gas all to discharge, while impact of the colliery layer to ground horizontal well 30 is compared
Little, such as colliery layer is to pressure of ground horizontal well 30 etc..
As shown in figure 1, in the technical scheme of the present embodiment, in step s 30, surface water horizontal well 30 and each Vertical Well 20
After being fully completed, a mine water horizontal well 40 is made a call to along colliery layer in Zai Cong great lanes, control mine water horizontal well 40 with it is nearest away from big lane
The left-right deviation distance of Vertical Well 20.Surface water horizontal well 30 can not be connected directly with big lane 10, otherwise, the mud in well can be made direct
Jing Ru great lanes, cause the accident.A mine water horizontal well 40 is made a call to again using in big lane 10, is got to and nearest Vertical Well 20, control
Good left-right deviation, under enter screen casing, then install control pipeline 50 in the well head of mine water horizontal well 40.Such as closing control pipeline 50,
Vertical Well 20 is completed again and expands chamber connection, just without this accident.
As shown in figure 1, in the technical scheme of the present embodiment, in step s 40, the control that the well head of mine water horizontal well 40 is installed
Tubulation line 50 has control valve.
As shown in figure 1, in the technical scheme of the present embodiment, in step s 50, in the case where each Vertical Well 20 is interior reamer is entered
Head, and carry out expanding chamber to each Vertical Well 20 so that each Vertical Well 20 is connected with surface water horizontal well 30 and mine water horizontal well 40.So
Connecting for surface water horizontal well 30 and mine water horizontal well 40 and Vertical Well 20 is achieved that, the full face well of colliery layer can be realized
Under pump drainage.Enter under reaming bit and facilitate what is connected between each Vertical Well 20 and surface water horizontal well 30 and mine water horizontal well 40
Operation.Specifically, the diameter of reaming bit is between 0.5 meter to 0.8 meter.Preferably 0.6 meter in the technical scheme of the present embodiment.
As shown in figure 1, in the technical scheme of the present embodiment, in step slo, beating each Vertical Well 20 and each surface water
Before horizontal well 30, also Vertical Well 20 and the well of surface water horizontal well 30 are determined on ground according to existing directional control device and technology
Position.Concrete routinely Technology of Directional Drilling determines well location.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It should be noted that description and claims of this specification and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. the object for distinguishing similar, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so that embodiments of the present invention described herein for example can be with except here
Order beyond those of diagram or description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that
Be cover it is non-exclusive include, for example, contain process, method, system, product or the equipment of series of steps or unit not
Be necessarily limited to those steps or the unit clearly listed, but may include clearly not list or for these processes, side
Other intrinsic steps of method, product or equipment or unit.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of method that full face utilizes downhole system exploiting coal bed methane, it is characterised in that include：
Step S10：Multiple Vertical Wells (20) are beaten along full face preset distance in the big lane of ground distance (10), and carry out completion,
Each Vertical Well (20) is through colliery layer；
Step S20：Beat surface water horizontal well (30), the net horizontal section of the surface water horizontal well (30) in the colliery layer, describedly
The left-right deviation distance of the net horizontal section of face horizontal well (30) and each Vertical Well (20) is between 0.3 meter to 0.6 meter；
Step S30：After the surface water horizontal well (30) and the Vertical Well (20) are fully completed, then from the interior edge of the big lane (10)
Colliery layer makes a call to a mine water horizontal well (40), and the mine water horizontal well (40) is left with away from the nearest Vertical Well (20) of the big lane (10)
Right offset distance is between 0.3 meter to 0.6 meter；
Step S40：Control pipeline (50) is installed in the well head of the mine water horizontal well (40) of the big lane (10)；
Step S50：Chamber is expanded in the colliery interval that each Vertical Well (20) passes through by reaming bit, by the surface water horizontal well
And the mine water horizontal well (40) is connected with each Vertical Well (20) (30)；
Step S60：The control pipeline installed by the well head of the mine water horizontal well (40) in the big lane (10)
(50) the coal gas exploitation of down-hole full face is carried out.
2. the method for exploiting coal bed methane according to claim 1, it is characterised in that in step S10, it is described predetermined
Distance is more than 800 meters.
3. the method for exploiting coal bed methane according to claim 1, it is characterised in that institute is included in step S20
Enter screen casing under stating in surface water horizontal well (30).
4. the method for exploiting coal bed methane according to claim 1, it is characterised in that the surface water horizontal well (30) is arranged on
1/3 depth from top to bottom of the colliery layer.
5. the method for exploiting coal bed methane according to claim 1, it is characterised in that institute is included in step S30
Enter screen casing under stating in mine water horizontal well (40).
6. the method for exploiting coal bed methane according to claim 1, it is characterised in that in step S30, the ground
After horizontal well (30) and each Vertical Well (20) are fully completed, down-hole horizontal described in is made a call to along colliery layer in Zai Cong great lanes (10)
Well (40), the mine water horizontal well (40) exists with the Vertical Well (20) the left-right deviation distance nearest away from the big lane (10)
Between 0.3 meter to 0.6 meter.
7. the method for exploiting coal bed methane according to claim 1, it is characterised in that in step S40, described big
The well head of the mine water horizontal well (40) in lane (10) installs control pipeline (50), and on control pipeline (50) valve is provided with
Structure.
8. the method for exploiting coal bed methane according to claim 1, it is characterised in that in step S50, each described
Enter reaming bit under in Vertical Well (20), and carry out expanding chamber to each Vertical Well (20) so that each Vertical Well (20) and institute
State surface water horizontal well (30) and the mine water horizontal well (40) connection.
9. the method for exploiting coal bed methane according to claim 8, it is characterised in that in step S50, the reaming
The diameter of drill bit is between 0.5 meter to 0.8 meter.
10. the method for exploiting coal bed methane according to claim 7, it is characterised in that in step S60, opens the valve
Door, the control pipeline (50) installed by the well head of the mine water horizontal well (40) in the big lane (10) is carried out
The coal gas exploitation of down-hole full face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710007571.1A CN106677746A (en) | 2017-01-05 | 2017-01-05 | Method for coal bed gas exploitation of full working face through down-hole system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710007571.1A CN106677746A (en) | 2017-01-05 | 2017-01-05 | Method for coal bed gas exploitation of full working face through down-hole system |
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| CN201710007571.1A Pending CN106677746A (en) | 2017-01-05 | 2017-01-05 | Method for coal bed gas exploitation of full working face through down-hole system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083947A (en) * | 2017-05-23 | 2017-08-22 | 中国神华能源股份有限公司 | The gang of wells and its process for constructing of synchronous extraction coal bed gas up and down |
| CN107288546A (en) * | 2017-08-16 | 2017-10-24 | 北京奥瑞安能源技术开发有限公司 | The completion method and horizontal well of a kind of horizontal well |
| CN109162678A (en) * | 2018-11-08 | 2019-01-08 | 中国神华能源股份有限公司 | Coal bed gas pumping method |
| CN109441404A (en) * | 2018-10-31 | 2019-03-08 | 中国神华能源股份有限公司 | Implement the method for the coal bed gas of underground mining multilayer coal in two main entrys |
| CN109441525A (en) * | 2018-11-12 | 2019-03-08 | 中国神华能源股份有限公司 | The method of pump drainage coal bed gas |
| CN110242209A (en) * | 2018-03-09 | 2019-09-17 | 中国石油天然气股份有限公司 | The boring method of producing well |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1316673B1 (en) * | 1998-11-20 | 2006-07-26 | CDX Gas, LLC | Method and system for accessing subterranean deposits from the surface |
| CN101915083A (en) * | 2010-08-13 | 2010-12-15 | 山西晋城无烟煤矿业集团有限责任公司 | Method for extracting coalbed gases from coal mines by upper and lower combination |
| CN102116167A (en) * | 2011-01-25 | 2011-07-06 | 煤炭科学研究总院西安研究院 | Ground and underground three-dimensional extraction system of coal seam gas |
| CN102817603A (en) * | 2012-08-15 | 2012-12-12 | 姚亚明 | Method communicating ground with underground mining coal bed gas |
| CN103603674A (en) * | 2013-11-29 | 2014-02-26 | 中国神华能源股份有限公司 | Method for communicating mine laneway with ground |
| CN204024473U (en) * | 2014-08-29 | 2014-12-17 | 富地柳林燃气有限公司 | Cbm development well |
| CN104989330A (en) * | 2015-08-03 | 2015-10-21 | 中国神华能源股份有限公司 | Coalbed gas recovery method |
-
2017
- 2017-01-05 CN CN201710007571.1A patent/CN106677746A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1316673B1 (en) * | 1998-11-20 | 2006-07-26 | CDX Gas, LLC | Method and system for accessing subterranean deposits from the surface |
| CN101915083A (en) * | 2010-08-13 | 2010-12-15 | 山西晋城无烟煤矿业集团有限责任公司 | Method for extracting coalbed gases from coal mines by upper and lower combination |
| CN102116167A (en) * | 2011-01-25 | 2011-07-06 | 煤炭科学研究总院西安研究院 | Ground and underground three-dimensional extraction system of coal seam gas |
| CN102817603A (en) * | 2012-08-15 | 2012-12-12 | 姚亚明 | Method communicating ground with underground mining coal bed gas |
| CN103603674A (en) * | 2013-11-29 | 2014-02-26 | 中国神华能源股份有限公司 | Method for communicating mine laneway with ground |
| CN204024473U (en) * | 2014-08-29 | 2014-12-17 | 富地柳林燃气有限公司 | Cbm development well |
| CN104989330A (en) * | 2015-08-03 | 2015-10-21 | 中国神华能源股份有限公司 | Coalbed gas recovery method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083947A (en) * | 2017-05-23 | 2017-08-22 | 中国神华能源股份有限公司 | The gang of wells and its process for constructing of synchronous extraction coal bed gas up and down |
| CN107083947B (en) * | 2017-05-23 | 2020-05-01 | 中国神华能源股份有限公司 | Well group for extracting coal bed gas synchronously from top and bottom and construction method thereof |
| CN107288546A (en) * | 2017-08-16 | 2017-10-24 | 北京奥瑞安能源技术开发有限公司 | The completion method and horizontal well of a kind of horizontal well |
| CN107288546B (en) * | 2017-08-16 | 2019-05-03 | 北京奥瑞安能源技术开发有限公司 | A kind of completion method and horizontal well of horizontal well |
| CN110242209A (en) * | 2018-03-09 | 2019-09-17 | 中国石油天然气股份有限公司 | The boring method of producing well |
| CN109441404A (en) * | 2018-10-31 | 2019-03-08 | 中国神华能源股份有限公司 | Implement the method for the coal bed gas of underground mining multilayer coal in two main entrys |
| CN109162678A (en) * | 2018-11-08 | 2019-01-08 | 中国神华能源股份有限公司 | Coal bed gas pumping method |
| CN109441525A (en) * | 2018-11-12 | 2019-03-08 | 中国神华能源股份有限公司 | The method of pump drainage coal bed gas |
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Application publication date: 20170517 |