CN106761406A - A kind of ground L-type mash gas pumping drilling - Google Patents

A kind of ground L-type mash gas pumping drilling Download PDF

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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
Authority
CN
China
Prior art keywords
section
facing upward
ground
straight hole
gas pumping
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
Application number
CN201611093411.5A
Other languages
Chinese (zh)
Inventor
倪建明
郑士田
韩东亚
侯晨
杨健
李抗抗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Research Institute Co Ltd of CCTEG
Huaibei Mining Group Co Ltd
Original Assignee
Xian Research Institute Co Ltd of CCTEG
Huaibei Mining Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Research Institute Co Ltd of CCTEG, Huaibei Mining Group Co Ltd filed Critical Xian Research Institute Co Ltd of CCTEG
Priority to CN201611093411.5A priority Critical patent/CN106761406A/en
Publication of CN106761406A publication Critical patent/CN106761406A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/06Deflecting the direction of boreholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F7/00Methods 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

A kind of ground L-type mash gas pumping drilling
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.
CN201611093411.5A 2016-12-02 2016-12-02 A kind of ground L-type mash gas pumping drilling Pending CN106761406A (en)

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

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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)

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CN (1) CN106761406A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102121364A (en) * 2011-02-14 2011-07-13 中国矿业大学 Well structure of pressure-releasing coal bed gas ground extraction well and arrangement method thereof
CN201924897U (en) * 2011-02-14 2011-08-10 中国矿业大学 Well bore structure of pressure-relief coal bed methane ground extraction well
CN102392678A (en) * 2011-10-21 2012-03-28 河南煤业化工集团研究院有限责任公司 Gas drainage method combining surface and underground fracturing and permeability improvement
CN102777180A (en) * 2012-07-26 2012-11-14 山东能源集团有限公司 Method for actively and regionally preventing and controlling rock burst in coal mines
CN104405283A (en) * 2014-10-22 2015-03-11 山西蓝焰煤层气集团有限责任公司 Technique for extracting gas from L-shaped ground drilling well in mining area
CN104594943A (en) * 2015-01-20 2015-05-06 大同煤矿集团有限责任公司 Ground composite L-shaped drilling well for gas control and gas control method
CN105927270A (en) * 2016-07-05 2016-09-07 重庆大学 Gas extraction method for parallel hole arrangement of L-shaped drilling and fracturing weakening top plate
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

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102121364A (en) * 2011-02-14 2011-07-13 中国矿业大学 Well structure of pressure-releasing coal bed gas ground extraction well and arrangement method thereof
CN201924897U (en) * 2011-02-14 2011-08-10 中国矿业大学 Well bore structure of pressure-relief coal bed methane ground extraction well
CN102392678A (en) * 2011-10-21 2012-03-28 河南煤业化工集团研究院有限责任公司 Gas drainage method combining surface and underground fracturing and permeability improvement
CN102777180A (en) * 2012-07-26 2012-11-14 山东能源集团有限公司 Method for actively and regionally preventing and controlling rock burst in coal mines
CN104405283A (en) * 2014-10-22 2015-03-11 山西蓝焰煤层气集团有限责任公司 Technique for extracting gas from L-shaped ground drilling well in mining area
CN104594943A (en) * 2015-01-20 2015-05-06 大同煤矿集团有限责任公司 Ground composite L-shaped drilling well for gas control and gas control method
CN105927270A (en) * 2016-07-05 2016-09-07 重庆大学 Gas extraction method for parallel hole arrangement of L-shaped drilling and fracturing weakening top plate
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

Cited By (4)

* Cited by examiner, † Cited by third party
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
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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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

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170531