CN116044361A - Coal seam horizontal long-drilling anti-reflection system based on hole bottom self-excitation - Google Patents
Coal seam horizontal long-drilling anti-reflection system based on hole bottom self-excitation Download PDFInfo
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- 238000005553 drilling Methods 0.000 title claims abstract description 102
- 239000003245 coal Substances 0.000 title claims abstract description 45
- 238000010248 power generation Methods 0.000 claims abstract description 24
- 230000005284 excitation Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 185
- 238000005086 pumping Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000002269 spontaneous effect Effects 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 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
- E21B43/25—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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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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
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0085—Adaptations of electric power generating means for use in boreholes
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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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- E21B44/005—Below-ground automatic control systems
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/024—Determining slope or direction of devices in the borehole
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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
- E21B7/046—Directional drilling horizontal drilling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention provides a coal seam horizontal long drilling hole anti-reflection system based on hole bottom self-power generation excitation, wherein the horizontal long drilling hole is drilled by a drilling system, the drilling system comprises a drilling motor, a drill rod connected with the drilling motor and a drill bit connected with the drill rod, the drill rod is arranged in a hollow mode, a self-power generation device and an anti-reflection device which advances along with the drill bit are installed in the drill rod, and the self-power generation device is electrically connected with the anti-reflection device and supplies power for the anti-reflection device. According to the invention, the drill rod is improved, the self-reflection device and the anti-reflection device are arranged in the drill rod, the self-reflection device and the self-reflection device are sent into the horizontal long drilling hole by the drill rod, the self-reflection device is internally provided with a cable through the drill rod, so that a complex process of using a large amount of cables in the horizontal long drilling hole is avoided, the self-reflection device supplies power for the anti-reflection device, anti-reflection operation can be performed while the horizontal long drilling hole is drilled, peripheral coal bodies are cracked along the horizontal long drilling hole, the coal seam air permeability is enhanced, and the yield of a coal seam gas well is improved.
Description
Technical Field
The invention belongs to the technical field of coal-bed gas anti-reflection, and particularly relates to a coal-bed horizontal long-drilling anti-reflection system based on hole bottom self-excitation.
Background
The conventional anti-reflection device is mainly used in a coal bed methane vertical well, particularly can be suspended in the vertical well (such as a high-energy sound wave vibrating rod and electric pulse equipment), can be used for anti-reflection of coal beds in the vertical well, can only be used for anti-reflection of coal bodies near the vertical well, cannot be used for modifying coal bodies in other areas, and has a limited overall anti-reflection effect. By using the anti-reflection device in the horizontal drilling hole, the coal body around the long drilling hole can be subjected to fracturing, the coal bed is modified in a large range, and the yield of a coal bed gas well is greatly improved. However, the existing technology for conveying the anti-reflection device and the structural arrangement of the anti-reflection device are not perfect, and the anti-reflection device is rarely used in horizontal long drilling holes.
CN202010290706.1 discloses a method for increasing permeability of coal seam in drilling holes in roof and floor of coal seam, which comprises drilling vertical well and horizontal hole with drilling equipment, and pushing permeability increasing device into horizontal hole by oil pipe pushing method. For the long horizontal drilling hole, the anti-reflection device is difficult to convey into the long horizontal drilling hole at a long distance, and the anti-reflection device needs to carry a cable line which is easy to break, so that the anti-reflection device is more inconvenient to convey in the long horizontal drilling hole.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and aims to provide a coal seam horizontal long drilling anti-reflection system based on hole bottom self-power generation excitation.
In order to achieve the above purpose, the invention adopts the following technical scheme: the horizontal long drilling hole is drilled by the drilling system, the drilling system comprises a drilling motor, a drill rod connected with the drilling motor and a drill bit connected with the drill rod, the drill rod is arranged in a hollow mode, a self-generating device and an anti-reflection device which advances along with the drill bit are installed in the drill rod, and the self-generating device is electrically connected with the anti-reflection device and supplies power for the anti-reflection device.
According to the technical scheme, the self-generating device and the anti-reflection device are arranged in the drill rod, the anti-reflection device and the self-generating device are sent into the horizontal long drilling hole by the drill rod, the self-generating device is arranged in the cable wire through the drill rod, a complex process of using the cable wire in the horizontal long drilling hole in a large quantity is avoided, the self-generating device in the drill rod supplies power for the anti-reflection device, anti-reflection operation can be performed while the horizontal long drilling hole is drilled, and efficiency is improved.
In a preferred embodiment of the invention, the self-generating device comprises a hydroelectric generator, the self-generating device is connected with a high-pressure water delivery device, the high-pressure water delivery device comprises a water supply pump, a high-pressure water pipe connected with a water outlet of the water supply pump, and a while-drilling connector for connecting the high-pressure water pipe and a drill rod, the drill rod is rotationally connected with the while-drilling connector, the water supply pump and the while-drilling connector are positioned outside a horizontal long drill hole, a water outlet of the high-pressure water pipe can be connected with a high-pressure water inlet of the self-generating device, and an impeller of the hydroelectric generator rotates to generate electricity under the action of high-pressure water flow.
Above-mentioned technical scheme adopts hydroelectric generation from power generation facility, and the working shaft carries high-pressure water to the power generation facility from among the drilling rod through high-pressure water pipe, the while-drilling connector, and the impeller of power generation facility is rotatory to be generated under the high-pressure rivers effect, for the consumer power supply, but also can avoid the high-pressure water pipe to bore the problem of wire winding along with the drilling rod through setting up the while-drilling connector.
In a preferred embodiment of the invention, the drill bit is a water conservancy driving drill bit with a water inlet and a water outlet, the drill bit can rotate relative to the drill rod, the water outlet of the self-generating device is connected with the water inlet of the drill bit through a pipeline, the pressure water discharged from the self-generating device drives the drill bit to rotate, and water in the drill bit is discharged into a drill hole through the water outlet of the drill bit.
According to the technical scheme, after the high-pressure water comes out of the self-generating device, the high-pressure water enters the drill bit and drives the drill bit to rotate, so that the power drilling of the drill bit at the bottom of the hole is realized, and then the water is discharged into a drilled hole from the drill bit; because the drill bit also uses high-pressure water as power, the drilling motor only needs to enable the drill rod to push the drill bit to advance, the drill rod does not need to transmit torsion, and the drill rod does not rotate when the drill bit drills.
In a preferred embodiment of the invention, the anti-reflection system further comprises a water pump for pumping out water in the borehole, a water outlet of the water pump being connected to a water inlet of the water storage station, a water outlet of the water storage station being connected to a water inlet of the water supply pump.
According to the technical scheme, the water in the drill hole is conveyed to the water storage station through the water suction pump and the water storage station, then is treated by water quality, and is conveyed to the self-generating device in the drill rod through the water supply pump again, so that the self-generating device can be recycled.
In a preferred embodiment of the invention, the drill rod comprises an outer drill rod and an inner drill rod positioned in the outer drill rod, the self-generating device and the anti-reflection device are arranged in the accommodating space of the outer drill rod and the inner drill rod, a high-pressure water pipeline is arranged in the inner drill rod, a water inlet of the high-pressure water pipeline is connected with a water outlet of the high-pressure water pipe through a while-drilling connector, and a water outlet of the high-pressure water pipeline is connected with a high-pressure water inlet of the self-generating device.
According to the technical scheme, the inner drill rod is used as a high-pressure water pipeline for connecting the high-pressure water pipe with the self-generating device, and the high-pressure water is conveyed in the drill rod by the inner drill rod, so that the high-pressure water pipe does not need to be arranged in the drill rod.
In another preferred embodiment of the invention, the inner drill rod comprises an outer pipe and an inner pipe positioned in the outer pipe, a channel between the outer pipe and the inner pipe is a high-pressure water pipeline, the inner pipe is a cable pipe, and a cable connected with the self-generating device and the anti-reflection device is positioned in the inner pipe.
According to the technical scheme, the inner drill rod is of a double-layer sleeve structure, a channel between the outer pipe and the inner pipe is a high-pressure water pipeline, the inner pipe is a cable pipe, and therefore the inner drill rod can be used as the high-pressure water pipeline for conveying high-pressure water and also can be used as the cable pipe for laying cables.
In another preferred embodiment of the invention, the cable wire is a two-core cable with an insulating layer.
According to the technical scheme, the insulating layer is arranged outside the cable line and used for isolating high-pressure water and copper wires inside the cable line.
In another preferred embodiment of the invention, an azimuth sensor for detecting the azimuth of the drill bit and an inclination sensor for detecting the inclination of the drill bit are also arranged in the drill rod, the power is supplied to the azimuth sensor and the inclination sensor by the self-generating device, signal output ends of the azimuth sensor and the inclination sensor are connected with an input end of a controller, and the controller is connected with a remote terminal.
According to the technical scheme, the azimuth sensor and the inclination sensor are arranged to detect azimuth and inclination data of the drill bit in real time, the azimuth and inclination data are transmitted to the remote terminal, and are used for constructors to refer to and make decisions, so that drilling trails of drilling holes can be known in real time, and drilling directions of the drilling holes can be corrected and controlled.
In another preferred embodiment of the invention, the controller is located outside the horizontal long borehole or inside the drill pipe; when the controller is positioned outside the horizontal long drilling hole, the controller is electrically connected with cables of the azimuth sensor and the inclination sensor through the while-drilling connector; when the controller is positioned in the drill rod, a cable connected with the controller is electrically connected with the while-drilling connector, and the while-drilling connector transmits data acquired by the controller to the remote terminal.
According to the technical scheme, the cable in the drill rod is connected through the while-drilling connector, so that the electric connection of all electric devices is ensured.
In another preferred embodiment of the invention, the anti-reflection means comprises an acoustic vibrating rod and/or an electrical impulse device mounted in the drill rod.
According to the technical scheme, the high-energy sound field vibration wave generated by the sound wave vibration rod has a good effect of modifying the small-scale pores of the coal bed, and is beneficial to improving the desorption and diffusion quantity of the coal bed gas; the electric pulse generated by the electric pulse device has good effect on the fracture cracking of the coal body, and is beneficial to the improvement of the seepage speed of the coal bed gas; the acoustic vibration rod is combined with the electric pulse device, so that the anti-reflection modification of the full-scale pore structure of the coal body can be realized, all coal bed gas migration channels are opened, the modified anti-reflection effect is remarkably improved, and the yield of the coal bed gas well is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a coal seam horizontal long-drilled hole anti-reflection system based on hole bottom self-excitation according to an embodiment of the application.
Reference numerals in the drawings of the specification include: coal seam 10, vertical well 21, horizontal long borehole 22, drilling motor 30, drill pipe 40, outer drill pipe 41, inner drill pipe 42, outer pipe 421, inner pipe 422, drill bit 50, self-generating device 60, water supply pump 61, high pressure water pipe 62, while-drilling connector 63, high pressure water pipe 64, water pump 65, water storage station 66, water pump 67, anti-reflection device 70, sonic vibration rod 71, electric pulse device 72, controller 81, azimuth sensor 82, and inclination sensor 83.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
The invention provides a coal seam horizontal long drilling hole anti-reflection system based on hole bottom self-power generation excitation, as shown in fig. 1, in the invention, a horizontal long drilling hole 22 is drilled by a drilling system, and the drilling system comprises a drilling motor 30, a drill rod 40 connected with the drilling motor 30, and a drill bit 50 connected with the drill rod 40. The drill rod 40 is arranged in a hollow manner, the drill rod 40 is internally provided with a self-generating device 60 and an anti-reflection device 70 which advances along with the drill bit 50, the self-generating device 60 is electrically connected with the anti-reflection device 70 and supplies power to the anti-reflection device 70, and the anti-reflection device 70 comprises an acoustic wave vibration rod 71 and/or an electric pulse device 72 which are arranged in the drill rod 40, and the acoustic wave vibration rod 71 and the electric pulse device 72 are preferably arranged at the same time.
The present invention installs the drilling motor 30 on the surface, and the worker first operates the drilling system to drill the vertical well 21 and then the horizontal long borehole 22 in communication with the vertical well 21, and the manner in which the vertical well 21 and the horizontal long borehole 22 are drilled is known in the art and will not be described in detail herein. The invention improves the drill rod 40, installs the self-generating device 60 and the anti-reflection device 70 in the drill rod 40, utilizes the drill rod 40 to send the anti-reflection device 70 and the self-generating device 60 into the horizontal long drilling hole 22, and the self-generating device 60 supplies power for the acoustic vibration rod 71 and the electric pulse device 72 through the built-in cable of the drill rod 40, so as to excite high-energy vibration waves and electric pulse shock waves, crack peripheral coal bodies along the horizontal long drilling hole 22 and enhance the air permeability of the coal seam 10.
The high-energy sound field vibration wave generated by the sound wave vibration rod 71 has good effect on the transformation of the small-scale pores of the coal bed 10, and is beneficial to improving the desorption and diffusion quantity of the coal bed 10 gas; the electric pulse generated by the electric pulse device 72 has good effect on the fracture cracking of the coal body, and is beneficial to the improvement of the seepage speed of the coal bed gas. The invention combines the acoustic wave vibration rod 71 and the electric pulse device 72, can realize the anti-reflection modification of the full-scale pore structure of the coal body, opens all coal bed gas migration channels, obviously improves the anti-reflection effect of the modification and improves the yield of the coal bed gas well.
In the present invention, it is preferable that the self-generating device 60 employs hydroelectric power generation, the self-generating device 60 includes a hydroelectric power generator, the self-generating device 60 is connected with a high-pressure water delivery device, the high-pressure water delivery device includes a water supply pump 61, a high-pressure water pipe 62 connected with a water outlet of the water supply pump 61, and a drill for connecting the high-pressure water pipe 62 and the drill
The while-drilling connector 63 of the rod 40, the water supply pump 61 and the while-drilling connector 63 are located outside the horizontal long borehole 22, 5 the water supply pump 61 and the while-drilling connector 63 are positioned on the ground outside the vertical well 21, and the water outlet of the high-pressure water pipe 62
Can be connected with a high-pressure water inlet of the self-generating device 60, and the impeller of the hydroelectric generator rotates to generate electricity under the action of high-pressure water flow.
Wherein the drill pipe 40 is rotatably connected to the while-drilling connector 63, and the while-drilling connector 63 does not rotate with the drill pipe 40 when drilling the horizontally long borehole 22, thereby leaving the high pressure water pipe 62 unspooling.
0 In another preferred embodiment of the present invention, the drill bit 50 is a hydraulic driving drill bit having a water inlet and a water outlet, the drill bit 50 is rotatable relative to the drill rod 40, the water outlet of the self-generating device 60 is connected to the water inlet of the drill bit 50 through a pipeline, the pressurized water discharged from the self-generating device 60 drives the drill bit 50 to rotate, and the water in the drill bit 50 is discharged into the horizontal long borehole 22 through the water outlet thereof. Preferably, the anti-reflection system further comprises a controller for
A water pump 65 for pumping water from the horizontal long drilling hole 22, the water pump 65 being arranged on the ground, the water pump 5 The water inlet is connected with a water pumping pipe 67, the water pumping pipe 67 extends into the hole bottom of the horizontal long drilling hole 22 through the vertical well 21,
the water outlet of the water pump 65 is connected with the water inlet of a water storage station 66 arranged on the ground, and the water outlet of the water storage station 66 is connected with the water inlet of the water supply pump 61. With the above-mentioned scheme, after the high-pressure water is discharged from the self-generating device 60, the high-pressure water enters the drill bit 50 and drives the drill bit 50 to rotate, so that the power drilling of the hole bottom drill bit 50 is realized, and then,
water is discharged from the drill bit 50 into the horizontal long bore 22, and the water pump 65 pumps the horizontal long bore through the water suction pipe 67 0 22 are pumped to a water storage station 66, treated by water quality, and then sent to the drill rod 40 again by a water supply pump 61
The internal self-generating device 60 is recycled.
In the present embodiment, since the drill bit 50 is powered by high-pressure water, the drilling motor 30 only needs to push the drill rod 40 forward, the drill rod 40 does not need to transmit torque, the drill rod 40 does not rotate when the drill bit 50 drills, the high-pressure water pipe 62 and the cable do not have a winding problem, and the while-drilling connector 63 is used as a connecting joint.
In another preferred embodiment of the present invention, the drill rod 40 comprises an outer drill rod 41 and an inner drill rod 42 located in the outer drill rod 41, the inner drill rod 42 is connected with the outer drill rod 41 by adopting a supporting structure, the self-generating device 60 and the anti-reflection device 70 are installed in the accommodating space of the outer drill rod 41 and the inner drill rod 42, a high-pressure water pipeline 64 is arranged inside the inner drill rod 42, a water inlet of the high-pressure water pipeline 64 is connected with a water outlet of the high-pressure water pipe 62 through a while-drilling connector 63, high-pressure water conveyed by the high-pressure water pipe 62 is conveyed by the high-pressure water pipeline 64 in the drill rod 40, and a water outlet of the high-pressure water pipeline 64 is connected with a high-pressure water inlet of the self-generating device 60. The water from the power generation device 60 is also delivered to the drill bit 50 via a high pressure water line 64.
In another preferred embodiment of the present invention, the inner drill rod 42 includes an outer tube 421 and an inner tube 422 located in the outer tube 421, the inner tube 422 and the outer tube 421 are also connected by adopting a supporting structure, a channel between the outer tube 421 and the inner tube 422 is a high-pressure water pipeline 64, the inner tube 422 is a cable tube, a cable wire connected with the self-generating device 60 and the anti-reflection device 70 is located in the inner tube 422, the cable wire is a double-core cable with an insulating layer, and an annular channel between the insulating layer of the inner tube 422 and the inner wall of the outer tube 421 is the high-pressure water pipeline 64. The cable joint of the cable is a quick connector, and the cable is connected with the electric device through the quick connector.
The high pressure water line 64 between the outer tube 421 and the inner tube 422 of the inner drill rod 42 is used not only to connect the while-drilling connector 63 and the self-generating device 60, but also to connect the self-generating device 60 with the drill bit 50. The inner drill rod 42 is close to the water inlet of the self-generating device 60, the water outlet of the self-generating device 60 and the water inlet of the drill bit 50, and is sequentially provided with a first water flow connector, a second water flow connector and a third water flow connector, the three water flow connectors are all connected with the outer pipe 421 and are communicated with the inner part of the outer pipe, the outer pipe 421 is not arranged between the first water flow connector and the second water flow connector, or the section of the outer pipe 421 is blocked, so that high-pressure water only enters the self-generating device 60 through the first water flow connector, and flows from the self-generating device 60 to the third water flow connector through the second water flow connector.
In another preferred embodiment of the present invention, an azimuth sensor 82 for detecting the azimuth of the drill bit 50 and an inclination sensor 83 for detecting the inclination of the drill bit 50 are further provided in the drill rod 40, the azimuth sensor 82 and the inclination sensor 83 are powered by the self-generating device 60, signal output ends of the azimuth sensor 82 and the inclination sensor 83 are connected with an input end of a controller 81, and the controller 81 is connected with a remote terminal. Wherein the azimuth is
The sensor 82 and the inclination sensor 83 are also arranged in the accommodating space of the outer drill rod 41 and the inner drill rod 42, and the azimuth is 5 The cables of the sensor 82 and the tilt sensor 83 are located in the inner tube 422, the controller 81 is located outside the horizontal long borehole 22, and the controller 81 is electrically connected with the cables of the orientation sensor 82 and the tilt sensor 83 through the while-drilling connector 63.
The azimuth sensor 82 and the inclination sensor 83 detect azimuth and inclination data of the drill bit 50 in real time, and the detected data are transmitted to the controller 81 in real time through the cable in the drill rod 40 through the water while drilling device to control 0 After receiving the detection data, the controller 81 transmits the detection data to a remote terminal for reference and decision-making by constructors
And the drilling track of the drilling hole is known in real time, so that the drilling direction of the drilling hole is corrected and controlled.
It should be noted that, the controller 81 may also be disposed in the drill rod 40, and the self-generating device 60 also supplies power to the controller 81 at this time, and the controller 81 is also disposed in the accommodation spaces of the outer drill rod 41 and the inner drill rod 42, connected to
The cable connected with the controller 81 is electrically connected with the while-drilling connector 63, and the while-drilling connector 63 connects the controller 5 81 to the remote terminal.
In the invention, the self-generating device 60 and the drill bit 50 are driven by water conservancy, and water is discharged from the drill bit 50 into the horizontal long drilling hole 22, so that the self-generating device 60, the anti-reflection device 70, the controller 81, the azimuth sensor 82 and the inclination sensor 83 are all in a highly sealed waterproof structure, and cables and joints connected with all electric devices are waterproof, so that the normal operation of all the electric devices is ensured.
0 In the description of the present specification, reference is made to the terms "preferred embodiment", "an example", an embodiment,
The description of "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The coal seam horizontal long drilling hole anti-reflection system based on hole bottom self-power generation excitation, the horizontal long drilling hole is drilled by a drilling system, the drilling system comprises a drilling motor, a drill rod connected with the drilling motor and a drill bit connected with the drill rod, and the anti-reflection system is characterized in that the drill rod is hollow, a self-power generation device and an anti-reflection device advancing along with the drill bit are installed in the drill rod, and the self-power generation device is electrically connected with the anti-reflection device and supplies power for the anti-reflection device.
2. The coal seam horizontal long drilling permeability-increasing system based on hole bottom self-power generation excitation according to claim 1, wherein the self-power generation device comprises a water power generation generator, the self-power generation device is connected with a high-pressure water delivery device, the high-pressure water delivery device comprises a water supply pump, a high-pressure water pipe connected with a water outlet of the water supply pump, and a while-drilling connector for connecting the high-pressure water pipe with a drill rod, the drill rod is rotationally connected with the while-drilling connector, the water supply pump and the while-drilling connector are positioned outside the horizontal long drilling hole, a water outlet of the high-pressure water pipe can be connected with a high-pressure water inlet of the self-power generation device, and an impeller of the water power generation generator rotates under the action of high-pressure water flow.
3. The coal seam horizontal long-drilling anti-reflection system based on hole bottom self-power excitation as claimed in claim 2, wherein the drill bit is a water conservancy driving drill bit with a water inlet and a water outlet, the drill bit can rotate relative to the drill rod, the water outlet of the self-power generation device is connected with the water inlet of the drill bit through a pipeline, pressurized water discharged from the self-power generation device drives the drill bit to rotate, and water in the drill bit is discharged into a drilled hole through the water outlet of the drill bit.
4. A coal seam horizontal elongate borehole anti-reflection system based on downhole spontaneous excitation as claimed in claim 3, further comprising a water pump for pumping water from the borehole, a water outlet of the water pump being connected to a water inlet of a water storage station, a water outlet of the water storage station being connected to a water inlet of a water supply pump.
5. The coal seam horizontal long drilling anti-reflection system based on hole bottom self-power excitation as claimed in claim 2, wherein the drill rod comprises an outer drill rod and an inner drill rod positioned in the outer drill rod, the self-power generation device and the anti-reflection device are arranged in the accommodating space of the outer drill rod and the inner drill rod, a high-pressure water pipeline is arranged in the inner drill rod, a water inlet of the high-pressure water pipeline is connected with a water outlet of the high-pressure water pipe through a while-drilling connector, and a water outlet of the high-pressure water pipeline is connected with a high-pressure water inlet of the self-power generation device.
6. A coal seam horizontal long borehole anti-reflection system based on hole bottom self-power excitation as claimed in claim 5, wherein said inner drill pipe comprises an outer pipe and an inner pipe positioned in the outer pipe, a passage between said outer pipe and said inner pipe is said high pressure water pipeline, said inner pipe is a cable pipe, and a cable connected to a self-power generation device and an anti-reflection device is positioned in said inner pipe.
7. A coal seam horizontal elongate borehole anti-reflection system based on downhole spontaneous excitation as recited in claim 6, wherein said cable is a twin-core cable with an insulating layer.
8. A coal seam horizontal long borehole anti-reflection system based on hole bottom self-excitation as claimed in any one of claims 1 to 7, wherein an azimuth sensor for detecting the azimuth of the drill bit and an inclination sensor for detecting the inclination of the drill bit are further arranged in the drill rod, the self-generating device supplies power for the azimuth sensor and the inclination sensor, signal output ends of the azimuth sensor and the inclination sensor are connected with an input end of a controller, and the controller is connected with a remote terminal.
9. A coal seam horizontal long borehole anti-reflection system based on downhole spontaneous excitation as recited in claim 8, wherein said controller is located outside of the horizontal long borehole or within the drill pipe;
when the controller is positioned outside the horizontal long drilling hole, the controller is electrically connected with the cables of the azimuth sensor and the inclination sensor through the while-drilling connector;
when the controller is positioned in the drill rod, a cable connected with the controller is electrically connected with the while-drilling connector, and the while-drilling connector transmits data acquired by the controller to the remote terminal.
10. A coal seam horizontal long borehole anti-reflection system based on downhole spontaneous excitation as claimed in any of claims 1 to 7, wherein the anti-reflection means comprises an acoustic vibrating rod and/or an electrical pulsing means mounted in the drill pipe.
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| CN202211673724.3A CN116044361A (en) | 2022-12-26 | 2022-12-26 | Coal seam horizontal long-drilling anti-reflection system based on hole bottom self-excitation |
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| CN202211673724.3A CN116044361A (en) | 2022-12-26 | 2022-12-26 | Coal seam horizontal long-drilling anti-reflection system based on hole bottom self-excitation |
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