CN106014475A - High-gas coal bed group dip orientation drilling cluster and gas extracting method - Google Patents
High-gas coal bed group dip orientation drilling cluster and gas extracting method Download PDFInfo
- Publication number
- CN106014475A CN106014475A CN201610528283.6A CN201610528283A CN106014475A CN 106014475 A CN106014475 A CN 106014475A CN 201610528283 A CN201610528283 A CN 201610528283A CN 106014475 A CN106014475 A CN 106014475A
- Authority
- CN
- China
- Prior art keywords
- gas
- boring
- dip orientation
- orientation
- flexible
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005553 drilling Methods 0.000 title abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 6
- 238000005065 mining Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
- E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a high-gas coal bed group dip orientation drilling cluster and a gas extracting method. The high-gas coal bed group dip orientation drilling cluster mainly consists of a conveying lane, an air returning lane, a dip orientation bendable drilling cluster and drilling fields. The gas extracting method is characterized by comprising the following steps: constructing a group of drilling fields on the conveying lane and the air returning lane on the work surface of a coal bed respectively; constructing a cluster of top plate dip orientation bendable drill holes and a cluster of bottom plate dip orientation bendable drill holes in each of the drilling fields respectively, wherein each cluster of drill holes consists of four dip orientation bendable drill holes; sealing the drill holes after construction; arranging gas extracting pipelines in all the drill holes; connecting the gas extracting pipelines to gas extracting system pipelines of the air returning lane and the conveying lane in order to extract gas released by the coal bed. The gas extracting method has the characteristics of short construction time, easiness in construction, low construction cost and large extracting range, the extraction efficiency of pressure relief gas in the high-gas coal bed can be increased, and particularly the extraction of gas in a gas enriched area in a fractured zone is facilitated.
Description
Technical field
The present invention relates to arrangement and the gas pumping method of a kind of high gas layer group's mash gas pumping drilling, be specially a kind of high
The boring bunch of gassy seam group's dip orientation and gas pumping method.
Background technology
China all composes in a lot of mining area has high gas layer group, and Gas Disaster is being most difficult to of facing in high gas layer group's recovery process
One of disaster administered.In recent years, Gas Disaster accident ratio shared by coal mining accident is the highest, preventing of Gas Disaster accident
Control be high gas layer group's mine safety work the most important thing.Along with coal mining intensity and the increasing of exploitation scale, high methane
During coal seam group mining, the release degree in coal seam is increased, and adds the burst size of high gas layer gas pressure relief, release
Gas can along the crack in rock stratum, gap migration diffusion, in upper corner, the gap region inner accumulated of release rock stratum of work surface,
Cause upper corner, face gas to transfinite, easily induce Gas Disaster, threaten the life security of coal mine working personnel, constrain
High gas layer group's safety and high efficiency.Therefore, when high gas layer group exploits, need the gap region inner product to release rock stratum
Poly-gas carries out efficient extraction, eliminates the threat of Gas Disaster.
Summary of the invention
It is an object of the invention to provide a kind of high gas layer group's dip orientation boring bunch and gas pumping method.
For achieving the above object, the technical scheme is that
(1) construct respectively one group of drill site in the transportation roadway of this working face of coal seam and return airway, construct respectively cluster top at each drill site
The flexible boring of plate dip orientation and the flexible boring of cluster base plate dip orientation, every bunch of boring is by 4 flexible brills of dip orientation
Hole form, drilling construction carries out sealing of hole after terminating, each boring install methane gas extraction pipeline, be then respectively incorporated into return airway and
The gas drainage system pipeline of transportation roadway carries out mash gas extraction.Owing to have employed the flexible boring of orientation, make boring in release drainage
High methane concentration district bend, add effective extraction length of boring, the gas pumping effect of boring can be improved.
(2) the flexible boring bunch of top board dip orientation constructed at each drill site and the flexible boring bunch of base plate dip orientation are by 4
Individual dip orientation flexible boring composition.
(3) transportation roadway of this working face of coal seam and the drill site spacing of return airway all take 50m, and every bunch of top board dip orientation is flexible
Boring and the flexible spacing of wells of base plate dip orientation all take 10m, whole this coal seam of pitch-row of the flexible boring of top board dip orientation
Hang down away from taking 8 times of mining heights, make the whole hole of the flexible boring of top board dip orientation be in overlying rock fissure zone, base plate dip orientation
Hanging down away from taking 20m of whole this coal seam of pitch-row of flexible boring, makes the whole hole of the flexible boring of base plate dip orientation be in underlying stratum
In Fractured zone, the basic aperture of the flexible boring of dip orientation takes 190mm, and reaming aperture takes 220mm.
The beneficial effects of the present invention is: provide a kind of high gas layer group's dip orientation boring bunch and gas pumping method, can
Realize the efficient extraction of the gas of a large amount of accumulations in release rock crack region when high gas layer group exploits, reduce this seam mining
During the gas density of return, eliminate the threat of Gas Disaster.
Accompanying drawing explanation
Fig. 1 is the plane graph of the structural representation of the present invention；
Fig. 2 is the profile of the present invention.
In figure, 1. transports are gone up a hill；2. ginney；3. return air is gone up a hill；4. transportation roadway；5. work surface；6. return airway；7. top
The flexible boring bunch of plate dip orientation；8. the flexible boring bunch of base plate dip orientation；9. drill site；The most upper coal seam；11.
Coal seam；12. the next coal seams；13. underlying stratum Fractured zone；14. overlying rock fissure zones.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, sees Fig. 1～2:
1) first, the transportation roadway (4) of the work surface (5) in this coal seam (11) and return airway (6) are constructed one group of brill respectively
(9), then, construct the flexible boring bunch of top board dip orientation (7) and base plate dip orientation respectively at each drill site (9)
Flexible boring bunch (8), drilling construction carries out sealing of hole after terminating, and installs methane gas extraction pipeline in each boring, afterwards the most also
The gas drainage system pipeline entering return airway (6) and transportation roadway (4) carries out mash gas extraction.
2) the flexible boring bunch of the top board dip orientation (7) constructed at each drill site (9) and the flexible boring of base plate dip orientation
Bunch (8) are by 4 dip orientation flexible boring compositions.
3) transportation roadway (4) of work surface (5) and drill site (9) spacing of return airway (6) all take 50m, and top board tendency is fixed
The spacing of wells to flexible boring bunch (7) and the flexible boring bunch of base plate dip orientation (8) all takes 10m, and top board tendency is fixed
Hanging down away from taking 8 times of mining heights to this coal seam of whole pitch-row (11) of flexible boring bunch (7), makes the flexible boring of top board dip orientation
Whole hole be in overlying rock fissure zone (14) in, this coal seam of whole pitch-row (11) of the flexible boring bunch of base plate dip orientation (8)
Hang down away from taking 20m, in making the whole hole of the flexible boring of base plate dip orientation be in underlying stratum Fractured zone (13), dip orientation
The basic aperture of flexible boring takes 190mm, and reaming aperture takes 220mm.
Claims (3)
1. the boring bunch of high gas layer group dip orientation and a gas pumping method, mainly fixed by transportation roadway, return airway, tendency
To flexible boring bunch, drill site composition, it is characterized in that: respectively construct one group of drill site in the transportation roadway of this working face of coal seam and return airway,
Constructing respectively the cluster flexible boring of top board dip orientation and the flexible boring of cluster base plate dip orientation at each drill site, boring is executed
Work carries out sealing of hole after terminating, and installs methane gas extraction pipeline in each boring, and the gas being then respectively incorporated into return airway and transportation roadway is taken out
Extraction system pipeline carries out mash gas extraction.
High gas layer group's dip orientation the most according to claim 1 boring bunch and gas pumping method, is characterized in that: top
The flexible boring bunch of plate dip orientation and the flexible boring bunch of base plate dip orientation are by 4 dip orientation flexible boring compositions.
High gas layer group's dip orientation the most according to claim 1 boring bunch and gas pumping method, is characterized in that: this
The transportation roadway of working face of coal seam and the drill site spacing of return airway all take 50m, and every bunch of flexible boring of top board dip orientation and base plate incline
All taking 10m to orienting the flexible spacing of wells, hanging down of whole this coal seam of pitch-row of the flexible boring of top board dip orientation is adopted away from taking 8 times
Height, hanging down away from taking 20m of whole this coal seam of pitch-row of the flexible boring of base plate dip orientation, the basic hole of the flexible boring of dip orientation
Footpath takes 190mm, and reaming aperture takes 220mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528283.6A CN106014475A (en) | 2016-07-05 | 2016-07-05 | High-gas coal bed group dip orientation drilling cluster and gas extracting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528283.6A CN106014475A (en) | 2016-07-05 | 2016-07-05 | High-gas coal bed group dip orientation drilling cluster and gas extracting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106014475A true CN106014475A (en) | 2016-10-12 |
Family
ID=57107402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610528283.6A Pending CN106014475A (en) | 2016-07-05 | 2016-07-05 | High-gas coal bed group dip orientation drilling cluster and gas extracting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014475A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223004A (en) * | 2018-01-05 | 2018-06-29 | 中煤科工集团重庆研究院有限公司 | Method for extracting gas by combining bidirectional three-dimensional staggered drilling with directional long drilling |
| CN108301866A (en) * | 2018-04-16 | 2018-07-20 | 中煤科工集团西安研究院有限公司 | Mining of closed distance coal seam group adjacent layer gas pressure relief directional drilling stops pumping method |
| CN110173295A (en) * | 2019-07-13 | 2019-08-27 | 中国矿业大学(北京) | A method of utilizing concordant directional drilling mash gas extraction and fire extinguishing |
| CN112682090A (en) * | 2020-12-30 | 2021-04-20 | 中煤科工集团重庆研究院有限公司 | Coal seam drilling interconnection method and system based on impact process and gas extraction method |
| CN113605840A (en) * | 2021-09-03 | 2021-11-05 | 中国矿业大学 | Method for extracting pressure-relief gas by using hole instead of roadway based on ultrahigh-pressure water jet flow reaming |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7258163B2 (en) * | 2002-04-03 | 2007-08-21 | Target Drilling, Inc. | Method and system for production of gas and water from a coal seam using well bores with multiple branches during drilling and after drilling completion |
| CN103775127A (en) * | 2013-12-31 | 2014-05-07 | 中国矿业大学 | Method for comprehensively treating gas in low-air-permeability high-gas-content coal seam group |
| CN104088638A (en) * | 2014-06-25 | 2014-10-08 | 西安科技大学 | Steep coal seam long-wall large-mining height workface coal wall caving and roof caving control technique |
| CN104100292A (en) * | 2014-07-31 | 2014-10-15 | 山西潞安环保能源开发股份有限公司 | Regional forced gas extraction method for single low-permeability outburst thick coal seam |
| CN205036404U (en) * | 2015-09-17 | 2016-02-17 | 李鑫 | Problem of working face gas transfinites is solved special gas drainage under suction lane arrange device |
-
2016
- 2016-07-05 CN CN201610528283.6A patent/CN106014475A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7258163B2 (en) * | 2002-04-03 | 2007-08-21 | Target Drilling, Inc. | Method and system for production of gas and water from a coal seam using well bores with multiple branches during drilling and after drilling completion |
| CN103775127A (en) * | 2013-12-31 | 2014-05-07 | 中国矿业大学 | Method for comprehensively treating gas in low-air-permeability high-gas-content coal seam group |
| CN104088638A (en) * | 2014-06-25 | 2014-10-08 | 西安科技大学 | Steep coal seam long-wall large-mining height workface coal wall caving and roof caving control technique |
| CN104100292A (en) * | 2014-07-31 | 2014-10-15 | 山西潞安环保能源开发股份有限公司 | Regional forced gas extraction method for single low-permeability outburst thick coal seam |
| CN205036404U (en) * | 2015-09-17 | 2016-02-17 | 李鑫 | Problem of working face gas transfinites is solved special gas drainage under suction lane arrange device |
Non-Patent Citations (1)
| Title |
|---|
| 郝世俊等: "抽放瓦斯弯曲钻孔施工技术", 《煤炭科学技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223004A (en) * | 2018-01-05 | 2018-06-29 | 中煤科工集团重庆研究院有限公司 | Method for extracting gas by combining bidirectional three-dimensional staggered drilling with directional long drilling |
| CN108301866A (en) * | 2018-04-16 | 2018-07-20 | 中煤科工集团西安研究院有限公司 | Mining of closed distance coal seam group adjacent layer gas pressure relief directional drilling stops pumping method |
| CN108301866B (en) * | 2018-04-16 | 2019-05-07 | 中煤科工集团西安研究院有限公司 | Mining of closed distance coal seam group adjacent layer gas pressure relief directional drilling stops pumping method |
| CN110173295A (en) * | 2019-07-13 | 2019-08-27 | 中国矿业大学(北京) | A method of utilizing concordant directional drilling mash gas extraction and fire extinguishing |
| CN112682090A (en) * | 2020-12-30 | 2021-04-20 | 中煤科工集团重庆研究院有限公司 | Coal seam drilling interconnection method and system based on impact process and gas extraction method |
| CN113605840A (en) * | 2021-09-03 | 2021-11-05 | 中国矿业大学 | Method for extracting pressure-relief gas by using hole instead of roadway based on ultrahigh-pressure water jet flow reaming |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102080526B (en) | Method for extracting gas from bedding level fractured well of ground coal seam roof | |
| CN100462523C (en) | Gob-side entry retaining Y-shaped ventilation goaf roof pressure relief gas extraction method | |
| CN103758559B (en) | Gob-side entry retaining Y-type ventilation high position return airway hole pumping and mining gas method | |
| CN104131831B (en) | A kind of coal bed gas well three-dimensional associating pumping method up and down | |
| CN101251028A (en) | Method for taking out and picking high gassy seam group dislodging gob-side entry retaining Y type ventilated decompression firedamp | |
| CN106014475A (en) | High-gas coal bed group dip orientation drilling cluster and gas extracting method | |
| CN102644476B (en) | Method for pumping gas of protected layer by layer penetration and hole drilling on high-position drilling fields of protecting layer machinery tunnel | |
| CN101240715A (en) | One well three-purpose mash gas harnessing method for ground well drilling and ground well drilling | |
| CN102392678A (en) | Gas drainage method combining surface and underground fracturing and permeability improvement | |
| CN103670496A (en) | Gob-side entry retaining and sectional coal seam gas pre-extracting method for single low-permeability outburst coal seam | |
| CN103161492A (en) | Gas extraction well location method based on overlying rock fracture shell | |
| CN102799955B (en) | Water bursting coefficient is less than 0.06MPa/m district Water Inrush and evaluates three figure methods | |
| CN104712358A (en) | Coal seam group with high gas content pressure relief and co-mining method based on gob-side entry retaining of working face of first mining total rock pressure relief | |
| CN102352769A (en) | Integrated mining method for commonly mining coal and gas of high mine | |
| CN108301866B (en) | Mining of closed distance coal seam group adjacent layer gas pressure relief directional drilling stops pumping method | |
| CN104564072A (en) | Complete non-coal-pillar continuous depressurized mining method for close-distance coal seam groups | |
| CN102828768A (en) | Method and system for gas pumping of high-gas coal mines | |
| CN103758560A (en) | Method for gas treatment in multiple progressive protection seam grouping regions | |
| CN102162367A (en) | Arrangement method for gas drainage drill sites of highly-gassy fully-mechanized top-coal caving surface | |
| CN103306714A (en) | Gas control method for drilling hole and hole three-purpose in close-range coal seam group bottom drainage roadway | |
| CN109519211A (en) | Method for extracting gas in mining area by using pre-extraction coal bed gas ground well | |
| CN111022108A (en) | Method for extracting gas in goaf | |
| CN102226412B (en) | Underground dark mining drilling well gas extraction method | |
| CN102182426A (en) | Method for pumping coal bed gas from long-distance pressure-relieved coal bed | |
| CN103410557B (en) | Single, low air permeability coal seam mash gas harnessing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
|
| RJ01 | Rejection of invention patent application after publication |