CN108223004B - Method for extracting gas by combining bidirectional three-dimensional staggered drilling with directional long drilling - Google Patents
Method for extracting gas by combining bidirectional three-dimensional staggered drilling with directional long drilling Download PDFInfo
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- CN108223004B CN108223004B CN201810011669.9A CN201810011669A CN108223004B CN 108223004 B CN108223004 B CN 108223004B CN 201810011669 A CN201810011669 A CN 201810011669A CN 108223004 B CN108223004 B CN 108223004B
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- 238000005553 drilling Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000002457 bidirectional effect Effects 0.000 title abstract 2
- 239000003245 coal Substances 0.000 claims abstract description 66
- 238000000605 extraction Methods 0.000 claims abstract description 36
- 238000010276 construction Methods 0.000 claims abstract description 27
- 230000005641 tunneling Effects 0.000 claims abstract description 8
- 239000003566 sealing material Substances 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims description 28
- 238000005065 mining Methods 0.000 claims description 12
- 239000013589 supplement Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
Classifications
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- 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
- E21B43/006—Production of coal-bed methane
-
- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a method for jointly extracting gas by using bidirectional three-dimensional staggered drilling and oriented long drilling, which comprises the steps of constructing long-distance oriented drilling along a stope face rail crossheading trend in the tunneling process of a stope face roadway under a coal mine, and pre-extracting coal bodies of a stope face transportation crossheading and a backup stope face rail crossheading. Along with the tunneling of the stope face track crossheading, the coal seam gas extraction drill hole is constructed along the trend of the stope face. And during the excavation of the stope face transportation crossheading, plugging the exposed long-distance directional drill hole by using hole sealing materials, and constructing the coal seam gas extraction drill hole along the inclined direction in the stope face transportation crossheading so as to form plane or vertical intersection with the coal seam gas extraction drill hole constructed in the working face track crossheading. The method improves the efficiency of coal mine gas disaster treatment, reduces the construction amount of coal mine underground gas treatment engineering, and has extremely high technology and economy.
Description
Technical field
The invention belongs to gas drainage technical fields, are related to a kind of two-way stereo staggered drilling collaboration directional long borehole joint
The method of mash gas extraction.
Background technique
With the rapid development of current Chinese national economy, the demand to the energy is also growing day by day.And China is one poor
The country of oil, few gas, rich coal, therefore coal is for a long time in occupation of the main status of China's one-time-consumption energy.But current China coal
The depth of mine exploitation is stepped up, and the degree of coal and gas dynamical disaster shows constantly soaring situation.Coal in China industry
Generally use the improvement of the method implementation mine gas disaster of exploitation protective layer or large area extraction.But part mine is due to coal seam
The reason of preservation, does not have the condition of exploitation protective layer.Therefore, pre- using construction coal mine down-hole drilling implementation large area region
Pumping is the technical way that such mine implements Achievements of Gas Control.With the continuous development of underground coal mine drilling technology, mesh
The coal mine gas extraction in preceding China has formd the progressive protected type extraction in region, the drilling of large area region grid, has intensively put down
The technical system of the compositions such as row drilling, level-crossing drilling, crossings on different level hole pumping and mining coal-bed gas technique, and practice at the scene
In achieve good application effect.But for middle thick-thick high methane or the gas control in coal and gas prominent coal seam, due to it
Coal seam thickness is larger, and often there is one or more layers dirt band in the middle part of coal seam, and the presence of dirt band layer hinders gas in coal seam
Migration between stratification.If the extraction borehole of construction does not penetrate dirt band layer, there certainly will be certain pumping blind zone, and then in influence
Thickness-high seam gas pumping effect.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of two-way stereo staggered drilling collaboration directional long borehole joints to take out
The method of mash gas, to provide the underground coal mine that a kind of project amount is small, stability is high, gas drainage amount is big, extraction concentration is high
The method of two-way stereo staggered drilling collaboration directional long borehole joint draining coal seam gas.
In order to achieve the above objectives, the invention provides the following technical scheme:
The method of two-way stereo staggered drilling collaboration directional long borehole joint mash gas extraction, this method comprise the following steps:
S1: in the track crossheading of stope, across strike direction construction long range directional drilling, along the top in coal seam
Plate, construction of bottom plates visit top, bottom out drilling, supplement the geological exploration data of Perfect the work face coal body, after construction, access back production
The extraction pipeline laid in working face track crossheading, starts to connect pumping；
S2: during the track crossheading of underground coal mine stope driving, using drilling machine, edge is inclined in slot on the way
It constructs the downlink mash gas pumping drilling in this coal seam to direction, after construction, is laid in access stope track crossheading
Extraction pipeline carries out connecing pumping；
S3: underground coal mine face haulage crossheading replaces driving using double lanes with standby mining face track crossheading,
In the tunneling process of underground coal mine face haulage crossheading, the uplink gas drainage in across strike direction, this coal seam of constructing is bored
Hole is allowed to form level-crossing or crossings on different level with the downlink mash gas pumping drilling constructed in track crossheading, after construction, connect
Enter the extraction pipeline laid in face haulage crossheading, carries out connecing pumping；
S4: it in the tunneling process of underground coal mine face haulage crossheading, will expose, using sealing material to track
The long range directional drilling for the across strike direction exposure constructed in crossheading is blocked；
S5: after underground coal mine stope track crossheading and haulage gate tunnel in place, penetrate through working face cuts eye,
Long range directional drilling in track crossheading, downlink mash gas pumping drilling, the uplink mash gas pumping drilling difference in haulage gate
With corresponding extraction pipeline is grid-connected connects pumping, form two-way stereo staggered drilling collaboration directional long borehole joint draining coal seam gas.
Further, the spacing of across strike direction construction long range directional drilling is 50~80m in step S1.
Further, downlink mash gas pumping drilling hole is deep to face haulage crossheading inwardly along the position of 15m in step S2
It sets.
Further, the depth long range directional drilling for the across strike direction exposure constructed in track crossheading blocked
For 15m.
The beneficial effects of the present invention are: the method for the present invention can be to high methane or the coal seam with coal and gas prominent danger
Carry out gas drainage.The extraction amount having with ground well drainage coal-bed gas is big, extraction concentration is high, extracting result is good
Advantage, and have many advantages, such as that good stability, construction is simple and project amount are small.In particular, construction in stope track crossheading
Long range directional drilling, face haulage crossheading and standby mining face track crossheading coal body can not only be carried out advanced
Extraction, conscientiously ensure coal road safety driving, while long range directional drilling after main aperture is formed during moving back brill, can also apply
Work visits top, bottoms out drilling, and supplement improves geological exploration data, the dirt band layer in coal seam can be further penetrated, with working face track
The two-way stereo staggered drilling collaboration constructed in crossheading, haulage gate forms criss-cross " drilling network system ", increases
The effective range of mash gas pumping drilling.Meanwhile this coal bed gas extraction of the uplink drilling constructed in working face haulage gate,
It may also be advantageous for draining.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is schematic diagram of the present invention.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
The present invention provides a kind of method of two-way stereo staggered drilling collaboration directional long borehole joint mash gas extraction, such as Fig. 1
It is shown, wherein 1 indicates stope track crossheading, 2 indicate that the two-way stereo staggered drilling collaboration of underground coal mine orients over long distances
Drill joint mash gas extraction, and 3 indicate to stop adopting line, and 4 be face haulage slot, and 5 indicate standby mining face track crossheading, 6 tables
Show that long range directional drilling draws back mining face haulage gate and standby mining face track crossheading coal body, the method for the present invention in advance in advance
It comprises the following steps,
A. during underground coal mine support in gateway of coal mining face is tunneled, in the track crossheading 1 of stope, edge is inclined
To direction construction long range directional drilling, coal body belonging to the track crossheading 5 to face haulage crossheading 4 and standby mining face
It is taken out in advance, reduces coal seam gas-bearing capacity；The across strike direction construction long range directional drilling is every 50~80m, along coal seam
Top plate and bottom plate construction visit top, bottom out drilling, the geological exploration data of supplement Perfect the work face coal body, and visit top, bottom out brill
Hole can also penetrate the dirt band layer in coal seam；And to long range directional drilling construction after, immediately access stope track
The extraction pipeline laid in crossheading, starts to connect pumping.
B. during the track crossheading 1 of underground coal mine stope tunnels, using drilling machine, in track crossheading,
Across strike direction, construction this coal bed gas extraction of downlink drilling, drilling hole are deep to face haulage crossheading inwardly along 15m's
Position；After construction hole to be drilled, the extraction pipeline laid in stope track crossheading is accessed immediately, starts to connect pumping.
C. underground coal mine face haulage crossheading and standby mining face track crossheading replace driving using double lanes, and
In the tunneling process of underground coal mine face haulage crossheading, across strike direction, construction this coal bed gas extraction of uplink drilling,
It is allowed to drill to form plane or crossings on different level with downlink this coal bed gas extraction constructed in track crossheading, as shown in Figure 2；To
After drilling construction, the extraction pipeline laid in face haulage crossheading is accessed immediately, starts to connect pumping.
D. in the tunneling process of underground coal mine face haulage crossheading, the across strike direction of construction in track crossheading
Long range directional drilling will expose, exposed long range directional drilling is blocked using sealing material, prevents underground from adopting
Air in pick space enters in drilling, blocks length and depth is 15m.
E. after underground coal mine stope track crossheading and haulage gate tunnel in place, penetrate through working face cuts eye,
Long range directional drilling and downlink tendency in track crossheading drill, and the uplink in haulage gate is inclined to drilling, respectively and accordingly
Extraction pipeline it is grid-connected connect pumping, form the pattern of two-way stereo staggered drilling collaboration directional long borehole joint draining coal seam gas.
Finally, it is stated that preferred embodiment above is only to illustrate the technical solution of invention rather than limits, although passing through
Above preferred embodiment is described in detail the present invention, however, those skilled in the art should understand that, can be in shape
Various changes are made in formula and to it in details, without departing from claims of the present invention limited range.
Claims (4)
1. the method for two-way stereo staggered drilling collaboration directional long borehole joint mash gas extraction, it is characterised in that: this method includes
Following steps:
S1: in the track crossheading of stope, across strike direction construction long range directional drilling, along seam roof, bottom
Plate construction visits top, bottoms out drilling, supplements the geological exploration data of Perfect the work face coal body, after construction, accesses actual mining
The extraction pipeline laid in the track crossheading of face, starts to connect pumping；
S2: underground coal mine stope track crossheading driving during, using drilling machine in slot on the way across strike side
To the downlink mash gas pumping drilling in this coal seam of constructing, after construction, the extraction of laying in access stope track crossheading
Pipeline carries out connecing pumping；
S3: underground coal mine face haulage crossheading replaces driving using double lanes with standby mining face track crossheading, in coal mine
In the tunneling process of underground face haulage crossheading, across strike direction, the uplink mash gas pumping drilling in this coal seam of constructing makes
Form level-crossing with the downlink mash gas pumping drilling constructed in track crossheading or crossings on different level accesses back after construction
The extraction pipeline laid in mining face haulage gate, carries out connecing pumping；
S4: in the tunneling process of underground coal mine face haulage crossheading, the across strike direction of construction in track crossheading
Long range directional drilling will expose, and block using sealing material to exposed long range directional drilling；
S5: after underground coal mine stope track crossheading and haulage gate tunnel in place, the eye of cutting of working face, track are penetrated through
Long range directional drilling in crossheading, downlink mash gas pumping drilling, uplink mash gas pumping drilling in haulage gate respectively with phase
The extraction pipeline answered is grid-connected to connect pumping, forms two-way stereo staggered drilling collaboration directional long borehole joint draining coal seam gas.
2. the method for two-way stereo staggered drilling collaboration directional long borehole joint mash gas extraction according to claim 1,
Be characterized in that: the spacing of across strike direction construction long range directional drilling is 50~80m in step S1.
3. the method for two-way stereo staggered drilling collaboration directional long borehole joint mash gas extraction according to claim 1,
Be characterized in that: downlink mash gas pumping drilling hole is deep to face haulage crossheading inwardly along the position of 15m in step S2.
4. the method for two-way stereo staggered drilling collaboration directional long borehole joint mash gas extraction according to claim 1,
Be characterized in that: the depth blocked to the long range directional drilling for the across strike direction exposure constructed in track crossheading is 15m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810011669.9A CN108223004B (en) | 2018-01-05 | 2018-01-05 | Method for extracting gas by combining bidirectional three-dimensional staggered drilling with directional long drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810011669.9A CN108223004B (en) | 2018-01-05 | 2018-01-05 | Method for extracting gas by combining bidirectional three-dimensional staggered drilling with directional long drilling |
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| Publication Number | Publication Date |
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| CN108223004A CN108223004A (en) | 2018-06-29 |
| CN108223004B true CN108223004B (en) | 2019-04-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109578060B (en) * | 2019-02-01 | 2024-04-26 | 西安闪光能源科技有限公司 | Coal seam gas extraction method based on controllable shock wave technology |
| CN109915197A (en) * | 2019-04-11 | 2019-06-21 | 河南理工大学 | A kind of method that rock gangway km directional long borehole substitution middle part bottom pumping rock gangway is taken out at bottom |
| 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 |
| CN111101998B (en) * | 2020-01-19 | 2021-03-19 | 山西晋城无烟煤矿业集团有限责任公司 | Method for intercepting gas extracted from directional long drill hole |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102587959B (en) * | 2012-03-13 | 2014-08-20 | 华晋煤层气综合利用有限责任公司 | Method for draining coal seam gas |
| CN104018874B (en) * | 2014-06-13 | 2016-06-08 | 中煤科工集团重庆研究院有限公司 | Method for pre-pumping working face gas by bedding drilling |
| CN104832198B (en) * | 2015-03-13 | 2017-12-01 | 中煤科工集团重庆研究院有限公司 | Comprehensive treatment method for roadway surrounding rock deformation, impact mine pressure and coal and gas outburst |
| CN106014475A (en) * | 2016-07-05 | 2016-10-12 | 安徽理工大学 | High-gas coal bed group dip orientation drilling cluster and gas extracting method |
| CN106321140B (en) * | 2016-08-31 | 2019-02-01 | 辽宁工程技术大学 | A kind of method for arranging of super high seam gas pre-drainage drilling |
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