CN111810084A - Coal bed mesh gas extraction drilling construction method of water jet drilling machine - Google Patents
Coal bed mesh gas extraction drilling construction method of water jet drilling machine Download PDFInfo
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- CN111810084A CN111810084A CN202010536573.1A CN202010536573A CN111810084A CN 111810084 A CN111810084 A CN 111810084A CN 202010536573 A CN202010536573 A CN 202010536573A CN 111810084 A CN111810084 A CN 111810084A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 193
- 238000005553 drilling Methods 0.000 title claims abstract description 160
- 238000010276 construction Methods 0.000 title claims abstract description 128
- 239000003245 coal Substances 0.000 title claims abstract description 46
- 238000000605 extraction Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- 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
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- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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Abstract
The invention relates to a coal seam mesh-shaped gas extraction drilling construction method of a water jet drilling machine, which comprises the following steps of drilling a plurality of water jet construction drill holes in a coal seam, and is characterized in that: the water jet drilling machine with the 360-degree azimuth marking disc is used for mainly rotating an outer drill rod to enable the direction marking position of a water jet nozzle to be aligned to the other position, adjacent to the water jet construction drilling hole, of the water jet construction drilling hole corresponding to the angle of the dial scale, and starting the water jet drilling machine to enable an inner drill rod to drill into the L-shaped drill rodDrillThe distance is meter, another water jet drilling hole from the water jet construction drilling hole to the direction adjacent to the water jet construction drilling hole is formed, all the water jet construction drilling holes are repeatedly completed until all the water jets in the direction adjacent to the water jet construction drilling holeAnd (6) drilling. The meshed through gas extraction drill holes can be directionally constructed according to needs, the gas extraction range of the extraction drill holes is expanded, the pressure relief area is increased, the method is particularly suitable for gas extraction of low-permeability hard coal seams, such as blind coal seams, and the gas extraction effect of the coal seams is effectively improved.
Description
Technical Field
The invention relates to a water jet drilling machine and a construction method of water jet drilling, in particular to a coal bed netted gas extraction drilling construction method of the water jet drilling machine.
Background
The improvement of the gas drainage effect of the low-permeability coal seam is an important direction and subject in the field of coal mine safety all the time, the traditional underground hydraulic punching, hydraulic hole making and hydraulic loosening are influenced by submerged jet flow and the like, the pressure relief influence range is not large, the effect cannot meet the requirement, and the hydraulic fracturing cannot form effective fracturing, so that the gas permeability of the coal seam is improved, and the effect is not ideal. The ultra-short radius radial rotation technology of the coal mine underground cross-layer drill hole can drill a gas circulation channel (drill hole) with the length of 20-50 meters in the range of the coal bed through which the drill hole penetrates, so that the control range and the pressure relief area of the drill hole are expanded, the permeability coefficient of the coal bed is improved, and the gas extraction effect of the coal bed is effectively improved.
The regional outburst prevention measure for gas extraction by cross-layer drilling is characterized in that due to the low gas permeability of a coal seam and other reasons, in order to meet the requirement of coal mine gas extraction indexes, the drilling intervals of some mining areas are reduced to 5 multiplied by 5 meters, and the drilling engineering quantity is large.
In order to effectively solve the problem, a water jet drilling method capable of turning drilling is adopted, cross-layer drilling is utilized, turning drilling is carried out at a coal-seeing point, water jet drilling is carried out in a coal seam between the cross-layer drilling holes, and a mesh-shaped interconnected drilling hole is formed in the coal seam, so that the air permeability coefficient of the coal seam is effectively increased, and the gas extraction effect is improved. However, at present, a correspondingly oriented water jet drilling machine is lacked, and the coal bed reticular gas extraction drilling construction method cannot be realized.
Disclosure of Invention
The invention aims to provide a coal seam mesh-shaped gas extraction drilling construction method of a water jet drilling machine, which overcomes the defects of the prior art, enlarges the gas extraction range of an extraction drilling hole and increases the pressure relief area.
For the implementation of the invention, referring to fig. 1, 5 and 6, firstly, a water jet drilling machine is introduced, which comprises a drilling machine body 1 mechanically connected with a drilling machine inner drill rod holder 2 and a drilling machine outer drill rod holder 3, and is characterized in that: the side of a drill rod holder 3 outside the drilling machine is provided with a 360-degree azimuth identification disc 5, the outer side of the end of each section of outer drill rod 4 is provided with a water jet nozzle direction identification 6, the front end of the outer drill rod 4 is fixed with a flexible drill rod gyrator 7, an inner drill rod 10 connected with an outer high-pressure rubber pipe 8 through a water braid 9 is connected with a flexible high-pressure rubber pipe 11, and the front end of the flexible high-pressure rubber pipe 11 is connected with a water jet nozzle 12 through the section 7 of the flexible drill rod.
Wherein: several collars 71 are provided in the kelly gyrator 7.
Wherein: the 360-degree azimuth marking disc 5 is fixed on the outer drill rod clamp holder 3 of the drilling machine through a fixing hole 407, the 360-degree azimuth marking disc 5 is composed of a dial 405 which is arranged on a base 401 and is provided with an angle adjusting handle 404, a half-side gland 402 is arranged at the upper part of the dial 405 to form an angle adjusting cavity 408, a drill rod passing hole 406 is arranged in the middle of the 360-degree azimuth marking disc 5, a fastening screw 403 is arranged from the outer side of the base 401, and the dial 405 of the 360-degree azimuth marking disc 5 is marked with 0-360-degree scales and is provided with a water drop level meter 409.
Wherein the 360-degree azimuth marking disc 5 can also be fixed on the drilling machine main body 1.
The technical scheme adopted by the invention for solving the technical problems is as follows: a kind ofThe construction method of the netted gas extraction drill hole of the coal seam of the water jet drilling machine comprises the steps of drilling a plurality of water jet construction drill holes in the coal seam, and is characterized in that: firstly, a water jet drilling machine is utilized, an outer drill rod with a flexible drill rod gyrator is inserted into the bottom of a water jet construction drilling hole of a coal seam, the outer drill rod is fixed on a drilling machine main body by a drilling machine outer drill rod clamp, an inner drill rod is fixed on the drilling machine main body by a drilling machine inner drill rod clamp, a water jet nozzle is enabled to be arranged in the flexible drill rod gyrator, a 360-degree azimuth marking disc fixed on the drilling machine outer drill rod clamp is used for pushing and pulling an angle adjusting handle, a water drop level gauge is enabled to be in a horizontal state, after a fastening screw rod is screwed down to fix a dial, the outer drill rod is rotated, the position of the water jet nozzle direction marking is enabled to be aligned with a position, close to the water jet construction drilling hole, of the water jet constructionDrillForming a water jet construction drilling hole to a water jet drilling hole adjacent to the water jet construction drilling direction, withdrawing the inner drill rod, enabling a water jet nozzle to be arranged in the flexible drill rod rotator, using a 360-degree azimuth marking disc fixed on a clamp holder of the outer drill rod of the drilling machine, pushing and pulling an angle adjusting handle to enable a water drop level gauge to be in a horizontal state, screwing a fastening screw to fix a dial, rotating the outer drill rod to enable the direction marking position of the water jet nozzle to be aligned to the position of the other water jet construction drilling hole adjacent to the water jet construction drilling hole corresponding to the angle of the dial, starting the water jet drilling machine, and enabling the inner drill rod to drill into the LDrillAnd (3) forming a distance of meters, drilling a water jet construction hole to another water jet drilling hole adjacent to the water jet construction drilling direction, withdrawing the inner drill rod, enabling the water jet nozzle to be arranged in the flexible drill rod rotator, repeating the third construction process, completing the water jet drilling construction from one water jet construction drilling hole to all the water jet drilling holes adjacent to the water jet construction drilling direction, withdrawing the inner drill rod, enabling the water jet nozzle to be arranged in the flexible drill rod rotator, withdrawing the inner drill rod and the outer drill rod by H meters, repeating the third construction process and the fourth construction process, and completing the water jet construction drilling to all the water jet drilling holes adjacent to the water jet construction drilling direction.
Wherein: and repeating the first construction process, the second construction process and the third construction process to finish all water jet construction drilling to all water jet drilling holes adjacent to the water jet construction drilling direction.
Wherein: 3L/5 is more than or equal to LDrillL is more than or equal to L/2, L is more than or equal to 50 m and more than or equal to 30 m, H is integral multiple of the effective length of each section of outer drill rod, and H is more than or equal to 10 m and more than or equal to 4 m.
Wherein: and calculating and determining the direction and depth position of the water jet drilling hole of the water jet construction drilling hole according to the horizontal angle, inclination angle and depth of the formed water jet construction drilling hole, and constructing to form the required mesh-shaped through gas extraction drilling hole.
Wherein: the number of the water jet net-shaped water jet construction drill holes is determined according to requirements, and psi is an angle between adjacent water jet drill holes.
The corresponding method derived by the coal seam mesh-shaped gas extraction drilling construction method of the water jet drilling machine is also within the protection range.
The invention has the beneficial effects that: the invention realizes the construction of the netted gas extraction drill hole of the coal seam from the water jet construction drill hole by using the water jet drilling machine, can directionally construct the netted through gas extraction drill hole according to the requirement, enlarges the gas extraction range of the extraction drill hole, increases the pressure relief area, is particularly suitable for the gas extraction of the hard coal seam with low air permeability, such as the gas extraction of the blind coal seam, and effectively increases the gas extraction and drainage effect of the coal seam.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a water jet drilling machine;
FIG. 2 is a schematic diagram of arrangement of meshed gas extraction drill holes in a coal seam of a water jet drilling machine according to a first embodiment of the invention;
FIG. 3 is a schematic sectional view taken along line A-A in FIG. 2;
FIG. 4 is a schematic diagram of the arrangement of meshed gas extraction drill holes in a coal seam of a water jet drilling machine according to a second embodiment of the invention;
FIG. 5.360 shows a schematic view of the construction of the azimuth indicator panel;
FIG. 6 is a schematic view of the cross-sectional structure A-A of FIG. 5.
In the figure: 1. the water jet drilling machine comprises a drilling machine body, 2 parts of a drilling machine inner drill rod clamp, 3 parts of a drilling machine outer drill rod clamp, 4 parts of an outer drill rod, 5.360-degree azimuth mark plates, 6 parts of a water jet nozzle direction mark, 7 parts of a flexible drill rod gyrator, 8 parts of an outer high-pressure rubber pipe, 9 parts of a water swivel, 10 parts of an inner drill rod, 11 parts of a flexible high-pressure rubber pipe, 12 parts of a water jet nozzle, 21 parts of a water jet drilling hole, 22 parts of a water jet construction drilling hole, 71 parts of a collar, 100 parts of a coal bed, 401 parts of a base, 402 parts of a half-side gland, 403 parts of a fastening screw rod, 404 parts of an angle adjusting handle, 405 parts of a dial, 406 parts of an over-drilling rod hole. .
Detailed Description
First embodiment
Referring to fig. 1, 2, 3, 5 and 6, a method for constructing a meshed gas extraction borehole of a coal seam by using a water jet drilling machine comprises drilling a plurality of water jet construction boreholes 22 (the diameter of which is more than 150 mm) in a coal seam 100, and is characterized in that: firstly, utilizing a water jet drilling machine, inserting an outer drill rod 4 with a flexible drill rod gyrator 7 into the hole bottom of a water jet construction drill hole 22 of a coal seam 100, fixing the outer drill rod 4 on a drilling machine main body 1 by using a drilling machine outer drill rod clamp 3, fixing an inner drill rod 10 on the drilling machine main body 1 by using a drilling machine inner drill rod clamp 2, enabling a water jet nozzle 12 to be in the flexible drill rod gyrator 7, pushing and pulling an angle adjusting handle 404 by using a 360-degree azimuth mark disc 5 fixed on the drilling machine outer drill rod clamp 3, enabling a water drop level meter 409 to be in a horizontal state, screwing a fastening screw 403 to fix a dial, then rotating the outer drill rod 4, enabling the position of the water jet nozzle direction mark 6 to be aligned with the position, adjacent to the water jet construction drill hole 21, of the water jet construction drill hole 20 corresponding to the angle of the dial 405, anddrillForming a water jet construction drill hole 22 to one water jet construction drill hole 21 adjacent to the water jet construction drill hole direction at a distance of 21 m and L being 40 m, withdrawing the inner drill rod 10, enabling the water jet nozzle 12 to be arranged in the flexible drill rod gyrator 7, using a 360-degree azimuth marking disc 5 fixed on an outer drill rod clamp 3 of the drilling machine to push and pull an angle adjusting handle 404, enabling a water drop level meter 409 to be in a horizontal state, screwing a fastening screw 403 to fix a dial, rotating the outer drill rod 4, and enabling the position of the water jet nozzle direction marking 6 to be aligned with the other water jet construction drill hole 20 adjacent to the water jet construction drill hole 20 corresponding to the angle of the dial 405At the position of the drill hole 21, a water jet drilling machine is started to make the inner drill rod 10 drill into LDrillForming a water jet construction drill hole 22 to another water jet construction drill hole 21 adjacent to the water jet construction drill hole direction, withdrawing the inner drill rod 10, leading the water jet nozzle 12 to be in the flexible drill rod rotator 7, repeating the construction process, finishing the construction from one water jet construction drill hole 22 to all water jet construction drill holes 21 adjacent to the water jet construction drill hole direction, withdrawing the inner drill rod 10, leading the water jet nozzle 12 to be in the flexible drill rod rotator 7, withdrawing the inner drill rod 10 and the outer drill rod 4 by H-4 (generally H-4-10 m) meter distance, repeating the construction process of water jet and water jet, and finishing one water jet construction drill hole 22 to all drill holes 21 adjacent to the water jet construction drill hole direction.
Wherein: and repeating the first construction process, the second construction process and the third construction process to finish all water jet construction drilling holes 22 to all water jet drilling holes 21 adjacent to the water jet construction drilling direction.
Wherein: 3L/5 is more than or equal to LDrillL is more than or equal to L/2, L is more than or equal to 50 m and more than or equal to 30 m, H is integral multiple of the effective length of each section of outer drill rod 4, and H is more than or equal to 10 m and more than or equal to 4 m.
Wherein: the number of the water jet net-shaped water jet construction drill holes 22 is determined according to requirements, psi is an angle between adjacent water jet drill holes, and psi is 60 degrees.
Wherein: and the direction and the depth position of the water jet drilling hole 21 of the water jet construction drilling hole 22 are determined by calculation according to the horizontal angle, the inclination angle and the depth of the formed water jet construction drilling hole 22, and the required mesh-shaped through gas extraction drilling hole is formed by construction.
Second embodiment
Referring to fig. 1, 4, 5 and 6, a method for constructing a meshed gas extraction borehole in a coal seam by using a water jet drilling machine comprises drilling a plurality of water jet construction boreholes 22 (with the diameter larger than 150 mm) in a coal seam 100, and is characterized in that: firstly, an outer drill rod 4 with a flexible drill rod gyrator 7 is inserted into the water jet construction drilled hole 22 of a coal seam 100 by using a water jet drilling machine, the outer drill rod 4 is fixed on a drilling machine main body 1 by using a drilling machine outer drill rod clamp 3, an inner drill rod 10 is fixed on the drilling machine main body 1 by using a drilling machine inner drill rod clamp 2, and a water jet nozzle 12 is enabled to reach the flexible drill rodIn the gyrator 7, the angle adjusting handle 404 is pushed and pulled by using the 360-degree azimuth marking disc 5 fixed on the outer drill rod clamp holder 3 of the drilling machine to enable the water drop level meter 409 to be in a horizontal state, after the fastening screw 403 is screwed to fix the dial, the outer drill rod 4 is rotated to enable the position of the water jet nozzle direction mark 6 to be aligned to the position, corresponding to the angle of the dial 405, of the water jet construction drill hole 20, which is adjacent to the water jet construction drill hole 21, a water jet drilling machine is started, and the inner drill rod 10 is made to drill into the L shapeDrill21 m, L240 m, L1Forming a water jet construction drill hole 22 to a water jet drill hole 21 adjacent to the water jet construction drill hole direction at a distance of 30 meters, withdrawing the inner drill rod 10, enabling a water jet nozzle 12 to be arranged in the flexible drill rod gyrator 7, using a 360-degree azimuth marking disc 5 fixed on an outer drill rod clamp 3 of the drilling machine to push and pull an angle adjusting handle 404, enabling a water drop level meter 409 to be in a horizontal state, screwing a fastening screw 403 to fix a dial scale, rotating the outer drill rod 4, enabling the position of a water jet nozzle direction mark 6 to be aligned to the position of the other water jet construction drill hole 20 adjacent to the water jet construction drill hole 21 corresponding to the angle of the dial scale 405, starting the water jet drilling machine, and enabling the inner drill rod 10 toDrill21 m, L240 m, L1Forming a water jet construction drill hole 22 to another water jet drill hole 21 adjacent to the water jet construction drill hole direction at a distance of 30 m, withdrawing the inner drill rod 10, enabling the water jet nozzle 12 to be arranged in the flexible drill rod rotator 7, repeating the construction process to finish the construction from one water jet construction drill hole 22 to all the water jet drill holes 21 adjacent to the water jet construction drill hole direction, withdrawing the inner drill rod 10, enabling the water jet nozzle 12 to be arranged in the flexible drill rod rotator 7, withdrawing the inner drill rod 10 and the outer drill rod 4 at a distance of H4 (generally H4-10 m) m, repeating the construction process to finish the construction from one water jet construction drill hole 22 to all the water jet drill holes 21 adjacent to the water jet construction drill hole direction.
Wherein: and repeating the first construction process, the second construction process and the third construction process to finish all water jet construction drilling holes 22 to all water jet drilling holes 21 adjacent to the water jet construction drilling direction.
Wherein: 3L2/5≥LDrill≥L 22, 50 m is more than or equal to L2Not less than 30 m, 3L1/5≥LDrill≥L 12, 50 m is more than or equal to L1More than or equal to 30 meters, H is integral multiple of the effective length of each section of the outer drill rod 4, and H is more than or equal to 10 meters and more than or equal to 4 meters.
Wherein: the number of the water jet netted water jet construction drill holes 22 is determined according to requirements, psi is an angle between adjacent water jet drill holes, and psi is 45 degrees.
Claims (5)
1. A coal bed netted gas extraction drilling construction method of a water jet drilling machine comprises the steps of drilling a plurality of water jet construction drill holes in a coal bed, and is characterized in that: firstly, a water jet drilling machine is utilized, an outer drill rod with a flexible drill rod gyrator is inserted into the bottom of a water jet construction drilling hole of a coal seam, the outer drill rod is fixed on a drilling machine main body by a drilling machine outer drill rod clamp, an inner drill rod is fixed on the drilling machine main body by a drilling machine inner drill rod clamp, a water jet nozzle is enabled to be arranged in the flexible drill rod gyrator, a 360-degree azimuth marking disc fixed on the drilling machine outer drill rod clamp is used for pushing and pulling an angle adjusting handle, a water drop level gauge is enabled to be in a horizontal state, after a fastening screw rod is screwed down to fix a dial, the outer drill rod is rotated, the position of the water jet nozzle direction marking is enabled to be aligned with a position, close to the water jet construction drilling hole, of the water jet constructionDrillForming a water jet construction drilling hole to a water jet drilling hole adjacent to the water jet construction drilling direction, withdrawing the inner drill rod, enabling a water jet nozzle to be arranged in the flexible drill rod rotator, using a 360-degree azimuth marking disc fixed on a clamp holder of the outer drill rod of the drilling machine, pushing and pulling an angle adjusting handle to enable a water drop level gauge to be in a horizontal state, screwing a fastening screw to fix a dial, rotating the outer drill rod to enable the direction marking position of the water jet nozzle to be aligned to the position of the other water jet construction drilling hole adjacent to the water jet construction drilling hole corresponding to the angle of the dial, starting the water jet drilling machine, and enabling the inner drill rod to drill into the LDrillThe distance is meter, a water jet construction drill hole is formed to another water jet construction drill hole adjacent to the water jet construction drill hole direction, the inner drill rod is withdrawn, the water jet nozzle is enabled to be arranged in the flexible drill rod rotator, the construction process is repeated, and one water jet construction drill hole is completed to all the adjacent water jet construction drill holesAnd (4) performing water jet drilling construction in the drilling direction, withdrawing the inner drill rod, enabling the water jet nozzle to enter the flexible drill rod rotator, drawing the inner drill rod and the outer drill rod out of the H meter distance, and repeating the second step and the third step to complete one water jet construction drilling to all water jet drilling in all water jet drilling directions adjacent to the water jet construction drilling direction.
2. The coal seam mesh-shaped gas extraction drilling construction method of the water jet drilling machine according to claim 1, characterized in that: and repeating the first construction process, the second construction process and the third construction process to finish all water jet construction drilling to all water jet drilling holes adjacent to the water jet construction drilling direction.
3. The coal seam mesh-shaped gas extraction drilling construction method of the water jet drilling machine according to claim 1, characterized in that: 3L/5 is more than or equal to LDrillL is more than or equal to L/2, L is more than or equal to 50 m and more than or equal to 30 m, H is integral multiple of the effective length of each section of outer drill rod, and H is more than or equal to 10 m and more than or equal to 4 m.
4. The coal seam mesh-shaped gas extraction drilling construction method of the water jet drilling machine according to claim 2, characterized in that: 3L/5 is more than or equal to LDrillL is more than or equal to L/2, L is more than or equal to 50 m and more than or equal to 30 m, H is integral multiple of the effective length of each section of outer drill rod, and H is more than or equal to 10 m and more than or equal to 4 m.
5. The meshed gas extraction drilling construction method for the coal seam of the water jet drilling machine according to any one of claims 1 to 4, characterized by comprising the following steps: and calculating and determining the direction and depth position of the water jet drilling hole of the water jet construction drilling hole according to the horizontal angle, inclination angle and depth of the formed water jet construction drilling hole, and constructing to form the required mesh-shaped through gas extraction drilling hole.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761616A (en) * | 2021-02-04 | 2021-05-07 | 重庆平山机电设备有限公司 | Branch hole drilling angle monitoring device and drilling construction method |
| CN112761617A (en) * | 2021-02-04 | 2021-05-07 | 重庆平山机电设备有限公司 | Drilling angle monitoring device and drilling construction method |
| CN115059443A (en) * | 2022-07-26 | 2022-09-16 | 徐州博安科技发展有限责任公司 | Jet type coal seam slot forming device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280000B1 (en) * | 1998-11-20 | 2001-08-28 | Joseph A. Zupanick | Method for production of gas from a coal seam using intersecting well bores |
| US20050284664A1 (en) * | 2003-11-13 | 2005-12-29 | Bill Riel | Dual wall drill string assembly |
| CN101429848A (en) * | 2007-11-06 | 2009-05-13 | 中国石油大学(北京) | Method apparatus and for hydraulic jet side drilling radial branching borehole |
| CN102966372A (en) * | 2012-12-17 | 2013-03-13 | 中国矿业大学 | Slotting induced-flow pressure-relief anti-reflection method for complicated seam |
| CN104912588A (en) * | 2015-05-18 | 2015-09-16 | 太原理工大学 | Spalling permeability increasing method for rapid excavation of underground seam gateway |
| CN105089499A (en) * | 2015-09-11 | 2015-11-25 | 平顶山天安煤业股份有限公司 | Coal mine downhole hydraulic jet tree-shaped drill hole guide device and method |
| CN105156085A (en) * | 2015-09-11 | 2015-12-16 | 重庆大学 | Composite fracturing and uniform permeability-improving method for tree-like boreholes in coal seams of underground coal mine |
| CN105525900A (en) * | 2015-09-11 | 2016-04-27 | 重庆大学 | Composite fracturing and uniform permeability increasing equipment for treelike drilling in coal seam of underground coal mine |
| CN108952795A (en) * | 2018-07-25 | 2018-12-07 | 河南理工大学 | A kind of high pressure oriented perforating anti-reflection method and equipment |
-
2020
- 2020-06-12 CN CN202010536573.1A patent/CN111810084A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280000B1 (en) * | 1998-11-20 | 2001-08-28 | Joseph A. Zupanick | Method for production of gas from a coal seam using intersecting well bores |
| US20050284664A1 (en) * | 2003-11-13 | 2005-12-29 | Bill Riel | Dual wall drill string assembly |
| CN101429848A (en) * | 2007-11-06 | 2009-05-13 | 中国石油大学(北京) | Method apparatus and for hydraulic jet side drilling radial branching borehole |
| CN102966372A (en) * | 2012-12-17 | 2013-03-13 | 中国矿业大学 | Slotting induced-flow pressure-relief anti-reflection method for complicated seam |
| CN104912588A (en) * | 2015-05-18 | 2015-09-16 | 太原理工大学 | Spalling permeability increasing method for rapid excavation of underground seam gateway |
| CN105089499A (en) * | 2015-09-11 | 2015-11-25 | 平顶山天安煤业股份有限公司 | Coal mine downhole hydraulic jet tree-shaped drill hole guide device and method |
| CN105156085A (en) * | 2015-09-11 | 2015-12-16 | 重庆大学 | Composite fracturing and uniform permeability-improving method for tree-like boreholes in coal seams of underground coal mine |
| CN105525900A (en) * | 2015-09-11 | 2016-04-27 | 重庆大学 | Composite fracturing and uniform permeability increasing equipment for treelike drilling in coal seam of underground coal mine |
| CN108952795A (en) * | 2018-07-25 | 2018-12-07 | 河南理工大学 | A kind of high pressure oriented perforating anti-reflection method and equipment |
Non-Patent Citations (2)
| Title |
|---|
| 张延顺等: "《惯性传感器实验教程》", 31 January 2019, 北京航空航天大学出版社 * |
| 萧其林: "《露天矿用牙轮钻机》", 28 February 2017 * |
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| CN112761617A (en) * | 2021-02-04 | 2021-05-07 | 重庆平山机电设备有限公司 | Drilling angle monitoring device and drilling construction method |
| CN112761616B (en) * | 2021-02-04 | 2023-11-28 | 重庆平山机电设备有限公司 | Branch hole drilling angle monitoring device and drilling construction method |
| CN112761617B (en) * | 2021-02-04 | 2023-12-26 | 重庆平山机电设备有限公司 | Drilling angle monitoring device and drilling construction method |
| CN115059443A (en) * | 2022-07-26 | 2022-09-16 | 徐州博安科技发展有限责任公司 | Jet type coal seam slot forming device |
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