CN106761406A - A kind of ground L-type mash gas pumping drilling - Google Patents
A kind of ground L-type mash gas pumping drilling Download PDFInfo
- Publication number
- CN106761406A CN106761406A CN201611093411.5A CN201611093411A CN106761406A CN 106761406 A CN106761406 A CN 106761406A CN 201611093411 A CN201611093411 A CN 201611093411A CN 106761406 A CN106761406 A CN 106761406A
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- China
- Prior art keywords
- section
- facing upward
- ground
- straight hole
- gas pumping
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- 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.)
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Classifications
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a kind of ground L-type mash gas pumping drilling, the drilling includes straight hole section, orients leads-slanting section and section of facing upward, and straight hole section is set straight down, and section of facing upward is arranged in this roof water flowing fractured zone, and orientation leads-slanting section connects straight hole section and section of facing upward.Straight hole section and orientation leads-slanting section enter petroleum casing pipe down, and screen casing is entered under section of facing upward as the effective extraction section of gas.L-type well group is provided with a main aperture, multiple branched holes and a Ge Tou lanes spilled water hole, stubble is closed with ground gas extraction pumping plant in aperture, realize that coal-face adopts the lasting extraction of release gas, have the advantages that boring positioning is accurate, speed of application is fast, can multiple-limb pore-creating.
Description
Technical field
The present invention relates to coal mining field, more particularly to a kind of ground L-type mash gas pumping drilling.
Background technology
Gas pumping during colliery high methane, the coal-face back production of coal and gas prominent coal seam, typically using ground
Gas pumping vertical, underground high position gas pumping hole or high-order gas pumping lane carry out the mode of extraction.Ground gas extraction is stood
Wellhole is away from general 100m or so, and cloth hole is more, and ground ore deposit harmonious relations are difficult；Underground high position gas pumping hole need to arrange high-order drill site,
And extracting result is poor during drill site alternating；Underground high position gas pumping lane excavation work amount is big, high cost.
This patent purpose is to substitute ground gas pumping vertical, underground high position gas pumping hole and high-order gas pumping lane,
Improve carrying out gas control on coal faces technology and technique.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of ground L-type mash gas pumping drilling, realize coal-face
The lasting extraction of release gas is adopted, has the advantages that boring positioning is accurate, speed of application is fast, can multiple-limb pore-creating.It is existing to solve
There is caused above-mentioned multinomial defect in technology.
To achieve the above object, the present invention provides following technical scheme：A kind of ground L-type mash gas pumping drilling, it is described
Drilling includes straight hole section, orients leads-slanting section and section of facing upward, and straight hole section extends to upper coal seam to underground, and section of facing upward is arranged on coal seam top
In plate water flowing fractured zone, orientation leads-slanting section connects straight hole section and section of facing upward；Straight hole section and orientation leads-slanting section enter petroleum casing pipe down,
Enter screen casing under section of facing upward as the effective extraction section of gas, section of facing upward includes a main aperture, the side wall of main aperture is provided with branched hole side
Point is bored, multiple branched holes are provided with by origin diverging of branched hole side tracking point, the lowest part of main aperture is provided with what is communicated with underworkings
Spilled water hole, aperture and the ground gas extraction pumping plant of straight hole section close stubble, carry out gas pumping.
Preferably, the section of facing upward is 22-28m away from roof spacing.
Preferably, the branched hole interplanar is every 28-33m.
Preferably, the straight hole section is spaced 48-53m with underworkings.
Preferably, the orientation leads-slanting section is arcuate structure on section.
Preferably, the lane spilled water hole is constructed in main aperture lowest part.
Beneficial effect using above technical scheme is：L-type mash gas pumping drilling in ground of the present invention, with boring positioning
Accurate, speed of application is fast, can multiple-limb pore-creating advantage, realize that coal-face adopts the lasting extraction for discharging gas, raising is taken out
Mash gas efficiency, complete performance is high.
Brief description of the drawings
Fig. 1 is structural plan schematic diagram of the invention；
Fig. 2 is the sectional view of structure of the present invention；
Fig. 3 is the structural representation of structure orientation leads-slanting section end of the present invention.
Wherein, 1-- straight holes section, 2-- orientations leads-slanting section, 3-- face upward the upper coal seam of section, 4--, this coal seam of 5--, 6-- undergrounds lane
Road, 7-- spilled water holes, 8-- spilled water holes side tracking point, 9-- branched holes side tracking point, 10-- main apertures, 11-- branched holes.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Fig. 1 shows specific embodiment of the invention：A kind of ground L-type mash gas pumping drilling, the drilling includes straight hole
Section 1, orientation leads-slanting section 2 and section 3 of facing upward, straight hole section 1 extend to upper coal seam 4 to underground, and section of facing upward 3 is arranged on roof water guide
In fissure zone, orientation leads-slanting section 2 connects straight hole section 1 and section 3 of facing upward；Straight hole section 1 and orientation leads-slanting section 2 enter petroleum casing pipe down,
Enter screen casing under section of facing upward 3 as gas effective extraction section, section of facing upward 3 includes a main aperture 10, the side wall of main aperture 10 is provided with point
Branch hole side tracking point 9, is that origin diverging is provided with multiple branched holes 11 with branched hole side tracking point 9, and the lowest part of main aperture 10 is provided with and well
The spilled water hole 7 that lower tunnel 6 communicates, aperture and the ground gas extraction pumping plant of straight hole section 1 close stubble, carry out gas pumping.
Section of facing upward is 25m away from roof spacing, and the lowest part for orienting leads-slanting section 2 is provided with and letting out that underworkings 6 is communicated
Water hole 7, the end interval 30m of section of facing upward 3, straight hole section 1 is spaced 50m with underworkings 6, and orientation leads-slanting section 2 is on vertical plane
Arcuate structure.
L-type mash gas pumping drilling in ground of the present invention, with boring positioning it is accurate, speed of application is fast, can multiple-limb pore-creating it is excellent
Point, realizes that coal-face adopts the lasting extraction of release gas, improves mash gas extraction efficiency, and complete performance is high.
As shown in Figures 2 and 3, one straight hole section 1 is opened, to horizon d 180m, isolation the 4th is topsoil；Two open orientation leads tiltedly
Section 2, vertical depth 537m, horizontal displacement 320m, 93.58 ° of hole deviation, three open section 3 of facing upward, and about 93-94 ° of hole deviation extends 380-400m, on
Facing upward section 3 has 3, and the end both sides of section of facing upward 3 are provided with branched hole side tracking point 9.
The spilled water hole 7 of underworkings 6 is led in the lowest segment construction for orienting leads-slanting section 2, and spilled water hole is formed in orientation leads-slanting section 2
Side tracking point 8, the lowest segment of the position in the vertical direction spacing orientation leads-slanting section 2 that spilled water hole 7 is communicated with underworkings 6 is 15m,
The position that spilled water hole 7 is communicated with underworkings 6 in the horizontal direction spacing face upward section 3 branched hole distance be 135m.Sluice
Hole side tracking point 8 is at least 20m with the spacing of branched hole side tracking point 9.
Ground L-type gas pumping well construction lasts 4 months, adds up probing drilling depth 2200m, adds up effective extraction section about
1000m.Extraction experiment lasts 187 days, adds up mash gas extraction 411005m3, average daily extraction 2257m3, maximum 8430m3/d；Extraction
Gas density average 35.3%, maximum 74.10%, achieve good effect.This achievement is coal face gas
Extraction provides a kind of new technical method, can progressively substitute existing ground gas extraction vertical, underground high position gas pumping
Hole and high-order gas pumping lane, to reach integrated, efficient target, with good economic and social benefit.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (5)
1. a kind of ground L-type mash gas pumping drilling, it is characterised in that the drilling includes straight hole section, orientation leads-slanting section and faces upward
Section, straight hole section extends to upper coal seam to underground, and section of facing upward is arranged in roof water flowing fractured zone, and orientation leads-slanting section connection is straight
Hole section and section of facing upward；Straight hole section and orientation leads-slanting section enter petroleum casing pipe down, and screen casing is entered under section of facing upward as the effective extraction of gas
Section, section of facing upward includes a main aperture, the side wall of main aperture is provided with branched hole side tracking point, is set by origin diverging of branched hole side tracking point
There are multiple branched holes, the lowest part of main aperture is provided with the spilled water hole communicated with underworkings, and the aperture of straight hole section is taken out with ground gas
Adopt pumping plant and close stubble, carry out gas pumping.
2. L-type mash gas pumping drilling in ground according to claim 1, it is characterised in that the section of facing upward is away from roof
Spacing is 23-28m.
3. L-type mash gas pumping drilling in ground according to claim 1, it is characterised in that the branched hole interplanar is every 28-
33m。
4. L-type mash gas pumping drilling in ground according to claim 1, it is characterised in that the main aperture is put down with airway
Face is spaced 48-53m.
5. L-type mash gas pumping drilling in ground according to claim 1, it is characterised in that the orientation leads-slanting section is in section
Upper is arcuate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093411.5A CN106761406A (en) | 2016-12-02 | 2016-12-02 | A kind of ground L-type mash gas pumping drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093411.5A CN106761406A (en) | 2016-12-02 | 2016-12-02 | A kind of ground L-type mash gas pumping drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106761406A true CN106761406A (en) | 2017-05-31 |
Family
ID=58913871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611093411.5A Pending CN106761406A (en) | 2016-12-02 | 2016-12-02 | A kind of ground L-type mash gas pumping drilling |
Country Status (1)
| Country | Link |
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| CN (1) | CN106761406A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080728A (en) * | 2019-04-10 | 2019-08-02 | 淮北矿业股份有限公司 | A method of protection coal mine gas extraction borehole improves drilling gas extracting result |
| CN110259503A (en) * | 2019-06-14 | 2019-09-20 | 华北理工大学 | A kind of expansion rock stratum high position horizontal bore gas pumping method |
| CN110306934A (en) * | 2019-07-02 | 2019-10-08 | 中煤科工集团西安研究院有限公司 | The construction method and supporting drilling tool of double branch's top plate major diameter high position directional long boreholes |
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| CN105971662A (en) * | 2016-07-05 | 2016-09-28 | 重庆大学 | Method for gas extraction by coal seam roof weakening through L-shaped drilling staged fracturing |
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Patent Citations (10)
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| CN102080518A (en) * | 2011-01-17 | 2011-06-01 | 河南理工大学 | Method for extracting gas from coal seam roof complex branched well |
| 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 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110080728A (en) * | 2019-04-10 | 2019-08-02 | 淮北矿业股份有限公司 | A method of protection coal mine gas extraction borehole improves drilling gas extracting result |
| CN110259503A (en) * | 2019-06-14 | 2019-09-20 | 华北理工大学 | A kind of expansion rock stratum high position horizontal bore gas pumping method |
| CN110306934A (en) * | 2019-07-02 | 2019-10-08 | 中煤科工集团西安研究院有限公司 | The construction method and supporting drilling tool of double branch's top plate major diameter high position directional long boreholes |
| CN110306934B (en) * | 2019-07-02 | 2021-03-19 | 中煤科工集团西安研究院有限公司 | Construction method for large-diameter high-position directional long drill hole of double-branch top plate |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ni Jianming Inventor after: Zheng Shitian Inventor after: Han Dongya Inventor after: Hou Chen Inventor after: Yang Jian Inventor after: Li Kangkang Inventor after: Xuan Xiao Inventor after: Li Jingpei Inventor before: Ni Jianming Inventor before: Zheng Shitian Inventor before: Han Dongya Inventor before: Hou Chen Inventor before: Yang Jian Inventor before: Li Kangkang |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170531 |