CN102213077A - Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement - Google Patents

Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement Download PDF

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Publication number
CN102213077A
CN102213077A CN2011101364016A CN201110136401A CN102213077A CN 102213077 A CN102213077 A CN 102213077A CN 2011101364016 A CN2011101364016 A CN 2011101364016A CN 201110136401 A CN201110136401 A CN 201110136401A CN 102213077 A CN102213077 A CN 102213077A
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water jet
reaming
pressure
waterpower
boring
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Inventor
王魁军
王耀锋
李平
张士环
姜文忠
白国基
刘志忠
夏仕柏
李艳增
高中宁
闫斌移
谢正红
杜泽生
陈建
童碧
焦先军
杨冬生
李朝
张必广
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SHENYANG INSTITUTE OF CHINA COAL RESEARCH INSTITUTE
Huainan Mining Group Co Ltd
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SHENYANG INSTITUTE OF CHINA COAL RESEARCH INSTITUTE
Huainan Mining Group Co Ltd
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Priority to CN2011101364016A priority Critical patent/CN102213077A/en
Publication of CN102213077A publication Critical patent/CN102213077A/en
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Abstract

The invention relates to coalmine gas extraction and permeability enhancement equipment and technology, and discloses a coal seam reaming system using three-dimensional (3D) swirling water jet. The system is connected to a high-pressure rotary joint through a high-pressure hose provided with a stop valve by virtue of a high-pressure hydraulic pump station and is characterized by being connected to a high-pressure water jet drill stem through a drilling machine, wherein the front end of the high-pressure water jet drill stem is connected with a high-pressure water jet head with nozzle bases; and high-pressure swirling water jet nozzles are arranged on the nozzle bases. The invention further discloses a coal seam reaming and fracturing method for permeability enhancement using the 3D swirling water jet. In the coal seam reaming method using the 3D swirling water jet, coal is sheared so as to lower the hydraulic pressure loss, improve the cutting efficiency and increase the cracks and bore diameter of the coal; high-pressure water is injected so as to fracture the coal between a hydraulic reamed hole and control bored holes; and a coal seam is fully depressurized within a large range so as to shorten the pre-extraction time of the coal seam.

Description

Three-dimensional rotation water jet coal seam reaming system and reaming and the anti-reflection method of pressure break
Technical field
The present invention relates to the anti-reflection equipment of coal mine gas extraction, particularly three-dimensional rotation water jet coal seam reaming system relates to coal mine gas extraction technology simultaneously, and particularly waterpower reaming and pressure break comprehensively increase the gas permeability of coal seam method.
Background technology
Because the gas in the high gas, low air permeability coal seam is difficult to take out in advance, cause in high gas and coal and gas outburst mine digging operation process a large amount of gas to be gushed out, cause face gas to transfinite easily, even bring out coal and gas burst accident.Along with the continuous increase of coal production to high-efficiency intensifying development and mining depth, this problem more and more restricts Safety of Coal Mine Production.In the coal and gas outburst mine that does not possess the topping mining conditions, layer-through drilling is taken out projecting coal bed gas in advance becomes a kind of important regional outburst prevention measures.How to increase effective influence basin of boring, improve coal-bed gas and take out effect in advance, be subjected to the extensive concern of coal industry always.Worked out several different methods at present both at home and abroad and improved the gas pumping rate, cross borehole, intensive boring, large diameter borehole, hydraulic flushing in hole, hydraulic slotted liner technique, to add that the sand fracturing takes out etc. in advance be effective means wherein.But there are problems such as the drilling construction engineering quantity is big, effectively little and extraction time of influence basin is long in these method majorities.Though high-pressure hydraulic reaming and slot technology have increased the release scope and the extraction influence basin of coal body around the boring to a certain extent, but it is big not enough only to be confined to a boring increase extraction influence basin and increase degree, and this has influenced waterpower reaming and the application of slot technology aspect the layer-through drilling extraction.Expanding method commonly used at present is except passing through to increase the bit diameter, all the other majorities are that the circular jet that adopts automatic swivel nozzle to produce is realized coal body cutting, this jetting method has shortcomings such as hydraulic losses is big, cutting efficiency is low, deslagging is difficult, the reaming time spent is long, when plug-hole occurring, cause that easily hole internal pressure increase causes spray orifice, exists certain potential safety hazard.The hydraulic fracturing technology release in coal seam in the certain limit on every side that can realize holing, but in release, produce high stress concentrations, concentrated stress can reach 3~4 times of virgin stress, and this has caused new obstacle to the colliery safety in production.In addition, because projecting coal bed complex structure, ature of coal is soft, geostatic stress is big, often causes the pressure break direction wayward, fracturing fluid is difficult for getting rid of after immersing coal body, the very fast closure of the cracks in coal seam of formation, thus limited this broad application.
Summary of the invention
In order to overcome the deficiencies in the prior art, a kind of three-dimensional rotation water jet coal seam reaming system is provided, in coal seam reaming of three-dimensional rotation water jet and the anti-reflection method of pressure break, use, reduce hydraulic losses, improve cutting efficiency, realize smooth deslagging and shorten the reaming time spent; A kind of three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break are provided simultaneously, after the coal seam section waterpower reaming to layer-through drilling, formed bigger hole, big displacement and deformation failure take place and have increased the crack in the coal body in coal body on every side, injecting water under high pressure wears the coal body pressure between waterpower reaming boring and the keyhole, take a large amount of ickings out of from keyhole, big, the whole release of the release scope in coal seam is abundant, has effectively shortened the coal seam and has found time in advance.
The technical scheme of technical problem to be solved by this invention is: a kind of three-dimensional rotation water jet coal seam reaming system, it is connected to the swinging chicksan by the high-pressure hydraulic pumping plant by the high-pressure rubber pipe that is provided with stop valve, characteristics are to be connected to the high-pressure water jet drilling rod again through behind the rig, high-pressure water jet drilling rod front end connects the high-pressure water jet shower nozzle that has nozzle base, installs the high pressure rotary water jet nozzle on nozzle base.
Wherein: for having coal and gas outburst danger or the coal seam of boring blowing phenomenon being arranged, establish the sealing of hole steel pipe at waterpower reaming boring open section, between sealing of hole steel pipe and waterpower reaming boring, inject sealing material, and at waterpower reaming drilling orifice installation boring blowout hookup, the extraction termination mine gas extraction system pipeline of boring blowout hookup.
Wherein: several nozzle bases of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle axis make it in the distribution that is centrosymmetric perpendicular to the projection on the plane of high-pressure water jet shower nozzle axis.
Wherein: the high pressure rotary water jet nozzle of built-in guide vane wheel is installed on the nozzle base, and high pressure rotary water jet nozzle diameter is 1.7~2.5mm.
Wherein: the mode that is tightly connected of built-in crush seal and compound gasket is all adopted in the connection between being connected between being connected between high pressure rotary water jet shower nozzle and the high-pressure water jet drilling rod, swinging chicksan and the high-pressure water jet drilling rod, the high-pressure water jet drilling rod, the swinging chicksan comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
A kind of three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break, for there not being the do not hole coal seam of blowing phenomenon of coal and gas outburst danger, play waterpower reaming boring with rig from the tunnel to the coal seam, around waterpower reaming boring, beat some keyholes, characteristics are to drive the high-pressure water jet drilling rod that connects the high-pressure water jet shower nozzle with rig, after treating that the high-pressure water jet shower nozzle is delivered to the precalculated position, coal seam, start the high-pressure hydraulic pumping plant, open rig, drive the rotation of high-pressure water jet drilling rod, the high-pressure water jet drilling rod is slowly moved back and forth in waterpower reaming boring, utilization is installed in the coal seam section of the rotating jet blanking waterpower reaming boring of the high pressure rotary water jet nozzle generation on the high-pressure water jet shower nozzle and carries out reaming, after the waterpower reaming, withdraw from the high-pressure water jet drilling rod, in waterpower reaming boring, preset steel pipe and default outer wall of steel pipe and waterpower reaming boring inwall are combined closely with sealing material, by the water under high pressure of default steel pipe toward the interior injection of waterpower reaming boring certain pressure, when certain keyhole has the water outflow of carrying ickings in a large number to no longer include the ickings discharge in current, stop the fracturing operation, carry out coal-bed gas and take out in advance.
Wherein: reciprocating motion refers to utilize rig drive high-pressure water jet drilling rod to advance or retreats, and controls the scope of waterpower reaming boring reaming section by the length that changes waterpower reaming boring inner high voltage water jet drilling rod.
Wherein: default steel pipe interior diameter is 20mm.
Wherein: the hydraulic pressure during the waterpower reaming is 25~47MPa, and flow is 120~200L/min, and high pressure rotary water jet nozzle diameter is 1.7~2.5mm, and the certain pressure of fracturing is more than 16MPa.
Wherein: waterpower reaming boring and keyhole are connected to mine gas extraction system by the extraction system pipeline respectively carry out coal-bed gas and take out in advance.
A kind of three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break, for the coal seam that has coal and gas outburst danger or have boring blowing phenomenon, play waterpower reaming boring with rig from the tunnel to the coal seam, around waterpower reaming boring, beat some keyholes, establish the sealing of hole steel pipe and the boring blowout hookup is installed in the aperture at waterpower reaming boring open section, the extraction termination mine gas extraction system pipeline of boring blowout hookup, characteristics are to drive the high-pressure water jet drilling rod that connects the high-pressure water jet shower nozzle with rig, after treating that the high-pressure water jet shower nozzle is delivered to the precalculated position, start the high-pressure hydraulic pumping plant, open rig, drive the rotation of high-pressure water jet drilling rod, the high-pressure water jet drilling rod is slowly moved back and forth in waterpower reaming boring, utilization is installed in the coal seam section of the rotating jet blanking waterpower reaming boring of the high pressure rotary water jet nozzle generation on the high-pressure water jet shower nozzle and carries out reaming, after the waterpower reaming, withdraw from the high-pressure water jet drilling rod, in waterpower reaming boring, preset steel pipe and default outer wall of steel pipe and boring inwall are combined closely with sealing material, by the water under high pressure of default steel pipe toward the interior injection of waterpower reaming boring certain pressure, when certain keyhole has the water outflow of carrying ickings in a large number to no longer include the ickings discharge in current, stop the fracturing operation, carry out coal-bed gas and take out in advance.
Wherein: reciprocating motion refers to utilize rig drive high-pressure water jet drilling rod to advance or retreats, and controls the scope of waterpower reaming boring reaming section by the length that changes waterpower reaming boring inner high voltage water jet drilling rod.
Wherein: default steel pipe interior diameter is 20mm.
Wherein: the hydraulic pressure during the waterpower reaming is 25~47MPa, and flow is 120~200L/min, and high pressure rotary water jet nozzle diameter is 1.7~2.5mm, and the certain pressure of fracturing is more than 16MPa.
Wherein: waterpower reaming boring and keyhole are connected to mine gas extraction system by the extraction system pipeline respectively carry out coal-bed gas and take out in advance.
The invention has the beneficial effects as follows: realize the coal seam reaming of three-dimensional rotation water jet, especially rotating fluid mainly relies on shear action that coal body is cut, can reduce hydraulic losses, improve cutting efficiency, realize smooth deslagging and shorten the reaming time spent, after the waterpower reaming of coal seam, formed bigger hole, bigger displacement and deformation failure take place and have increased the crack in the coal body in coal body on every side, the water under high pressure that reinjects is pressed the coal body between waterpower reaming boring and the keyhole and is worn, take a large amount of ickings out of from keyhole, the release scope in coal seam is big, whole release is abundant, has shortened the coal seam effectively and has found time in advance.
Description of drawings
The present invention will be further described below in conjunction with the drawings and specific embodiments.Protection scope of the present invention not only is confined to the statement of following content.
Fig. 1. structure principle chart of the present invention;
Fig. 2. high-pressure water jet nozzle structure schematic diagram of the present invention;
Fig. 3. high pressure rotary water jet nozzle of the present invention and guide vane wheel structural representation;
Fig. 4. high-pressure water jet jackrod structure schematic diagram of the present invention;
Fig. 5. fracturing schematic diagram of the present invention.
The specific embodiment:
Accompanying drawing number
1. high-pressure hydraulic pumping plants among the figure, 2. stop valve, 3. swinging chicksan, 4. high-pressure rubber pipe, 5. rig, 6. high-pressure water jet drilling rod, 7. boring blowout hookup, 8. extraction system pipeline, 9. sealing material, 10. coal seam, 11. high-pressure water jet shower nozzles, 12. high pressure rotary water jet nozzles, 13. waterpower reaming boring, 14. sealing of hole steel pipes, 15. keyholes, 16. guide vane wheel, 17. nozzle bases, 18. default steel pipes.
First embodiment
Referring to Fig. 1,2,3,4, for the coal seam 10 that does not have coal and gas outburst danger and the blowing phenomenon of not holing, a kind of three-dimensional rotation water jet coal seam reaming system, it is connected to swinging chicksan 3 by high-pressure hydraulic pumping plant 1 by the high-pressure rubber pipe 4 that is provided with stop valve 2, characteristics are to be connected to high-pressure water jet drilling rod 6 again through behind the rig 5, high-pressure water jet drilling rod 6 front ends connect the high-pressure water jet shower nozzle 11 that has nozzle base 17, install high pressure rotary water jet nozzle 12 on nozzle base.
Wherein: 2 nozzle bases 17 of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle 11 axis make it be 180 degree angles perpendicular to the projection on the plane of high-pressure water jet shower nozzle 11 axis.
Wherein: high pressure rotary water jet nozzle 12 diameters are 2.3mm.
Wherein: the connection between being connected between being connected between high-pressure water jet shower nozzle 11 and the high-pressure water jet drilling rod 6, swinging chicksan 3 and the high-pressure water jet drilling rod 6, the high-pressure water jet drilling rod, all adopt the mode that is tightly connected of built-in crush seal and compound gasket, the swinging chicksan comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
Second embodiment
Referring to Fig. 1,2,3,4, for having coal and gas outburst danger or the coal seam 10 of boring blowing phenomenon being arranged, a kind of three-dimensional rotation water jet coal seam reaming system, it is connected to swinging chicksan 3 by high-pressure hydraulic pumping plant 1 by the high-pressure rubber pipe 4 that is provided with stop valve 2, characteristics are to be connected to high-pressure water jet drilling rod 6 again through behind the rig 5, high-pressure water jet drilling rod 6 front ends connect the high-pressure water jet shower nozzle 11 that has nozzle base 17, install rotating fluid nozzle 12 on nozzle base.
Wherein: 3 nozzle bases 17 of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle 11 axis make it be 120 degree angles perpendicular to the projection on the plane of high-pressure water jet shower nozzle 11 axis.
Wherein: establish sealing of hole steel pipe 14 at waterpower reaming 13 open sections of holing, between sealing of hole steel pipe 14 and waterpower reaming boring 13, inject sealing material 9, and boring blowout hookup 7 is installed, the extraction termination mine gas extraction system pipeline 8 of boring blowout hookup 7 in waterpower reaming 13 apertures of holing.
Wherein: the high pressure rotary water jet nozzle 12 of built-in guide vane wheel 16 is installed on the nozzle base 17, and high pressure rotary water jet nozzle 12 diameters are 1.8mm.
Wherein: the connection between being connected between being connected between high-pressure water jet shower nozzle 11 and the high-pressure water jet drilling rod 6, swinging chicksan 3 and the high-pressure water jet drilling rod 6, the high-pressure water jet drilling rod 6, all adopt the mode that is tightly connected of built-in crush seal and compound gasket, the swinging chicksan comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
The 3rd embodiment
Referring to Fig. 1,2,3,4,5, a kind of three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break, for there not being the do not hole coal seam 10 of blowing phenomenon of coal and gas outburst danger, play waterpower reaming boring 13 with rig 5 from the tunnel to coal seam 10, around waterpower reaming boring 13, beat some keyholes 15, characteristics are to drive the high-pressure water jet drilling rod 6 that connects high-pressure water jet shower nozzle 11 with rig 5, after treating that high-pressure water jet shower nozzle 11 is delivered to 10 precalculated positions, coal seam, start high-pressure hydraulic pumping plant 1, open rig 6, drive 6 rotations of high-pressure water jet drilling rod, high-pressure water jet drilling rod 6 is slowly moved back and forth in waterpower reaming boring 13, utilization is installed in the coal seam of the rotating jet blanking waterpower reaming boring 13 of high pressure rotary water jet nozzle 12 generations on the high-pressure water jet shower nozzle 11 and carries out reaming for 10 sections, after the waterpower reaming, withdraw from high-pressure water jet drilling rod 6, default steel pipe 18 and inject sealing material 9 and make and preset steel pipe 18 outer walls and waterpower reaming 13 inwalls of holing and combine closely in waterpower reaming boring 13, by the water under high pressures of default steel pipe 18 toward waterpower reaming boring 13 interior injection certain pressures, when certain keyhole 15 has the water outflow of carrying ickings in a large number to no longer include the ickings discharge in current, stop the fracturing operation, carry out coal-bed gas and take out in advance.
Wherein: move back and forth and to refer to utilize rig 5 to drive high-pressure water jet drilling rods 6 to advance or retreat, come the scope of keyhole reaming section by changing the hole length of 13 inner high voltage water jet drilling rods 6 of waterpower reaming.
Wherein: default steel pipe 18 interior diameters are 20mm.
Wherein: the hydraulic pressure during the waterpower reaming is 25MPa, and flow is 180L/min, and high pressure rotary water jet nozzle 12 diameters are 2.3mm, coal flow in the reaming process is 8~19kg/min, bore diameter expands 550~793mm to, and average out to 672mm, the certain pressure of fracturing are 18MPa.
Wherein: waterpower reaming (pressure break) boring 13 and keyhole 15 are connected to mine gas extraction system by extraction system pipeline 8 respectively carry out coal-bed gas and take out in advance.
The 4th embodiment
Referring to Fig. 1,2,3,4,5, a kind of three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break, for the coal seam 10 that has coal and gas outburst danger or have boring blowing phenomenon, play waterpower reaming boring 13 with rig 5 from the tunnel to coal seam 10, around waterpower reaming boring 13, beat some keyholes 15, establish sealing of hole steel pipe 14 at waterpower reaming 13 open sections of holing, between sealing of hole steel pipe 14 and waterpower reaming boring 13, inject sealing material 9, and at aperture installation boring blowout hookup 7, the extraction termination mine gas extraction system pipeline 8 of boring blowout hookup 7, characteristics are to drive the high-pressure water jet drilling rod 6 that connects high-pressure water jet shower nozzle 11 with rig 5, after treating that high-pressure water jet shower nozzle 11 is delivered to the precalculated position, start high-pressure hydraulic pumping plant 1, open rig 5, drive 6 rotations of high-pressure water jet drilling rod, high-pressure water jet drilling rod 6 is slowly moved back and forth in waterpower reaming boring 13, utilization is installed in the coal seam of the rotating jet blanking waterpower reaming boring 13 of high pressure rotary water jet nozzle 12 generations on the high-pressure water jet shower nozzle 11 and carries out reaming for 10 sections, after the waterpower reaming, withdraw from high-pressure water jet drilling rod 6, default steel pipe 18 also combines closely outer wall of steel pipe and waterpower reaming 13 inwalls of holing with sealing material 9 in waterpower reaming boring 13, by the water under high pressures of default steel pipe 18 toward waterpower reaming boring 13 interior injection certain pressures, when certain keyhole 15 has the water outflow of carrying ickings in a large number to no longer include the ickings discharge in current, stop the fracturing operation, carry out coal-bed gas and take out in advance.
Wherein: reciprocating motion refers to utilize rig 5 drive high-pressure water jet drilling rods 6 to advance or retreats, control the scope of waterpower reaming boring reaming section by changing the hole length of 13 inner high voltage water jet drilling rods 6 of waterpower reaming, high-pressure water jet drilling rod 6 can bear the high pressure of 50MPa and not reveal.
Wherein: default steel pipe 18 interior diameters are 20mm.
Wherein: the hydraulic pressure during the waterpower reaming is 28MPa, and flow is 160L/min, and high pressure rotary water jet nozzle diameter is 1.8mm, ickings flow in the reaming process is 5~25kg/min, bore diameter expands 448~1042mm to, and average out to 587mm, the certain pressure of fracturing are 16MPa.
Wherein: waterpower reaming boring 13 and keyhole 15 are connected to mine gas extraction system by extraction system pipeline 8 respectively carry out coal-bed gas and take out in advance.
Wherein: sealing material 9 is a cement mortar.
During the actual tests, when adopting the hydraulic fracturing anti-reflection engineering test merely, minimum cracking pressure is 18MPa, and the pressure break radius is at 7.3 ~ 7.5m.When adopting three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break to carry out on-the-spot commerical test, test 20 groups of borings altogether, adopt three-dimensional rotation water jet coal seam reaming single hole blanking to go out 0.3 ~ 3t coal, all the hole weight of producing coal is 0.90t, the waterpower reaming is holed, and bore diameter rises to 1042mm by the 113mm maximum after 13 reamings, on average is increased to 587mm.The pressure break time obviously reduces after the waterpower reaming, and minimum cracking pressure is 16MPa, and the mean pressure split pressure is 18.53MPa, and the pressure break radius is between 7 ~ 13m, and average pressure break radius is 9.16m, and the quantity that presses off keyhole 15 increases to some extent.Waterpower reaming and pressure break hole pumping and mining amount are 1.26 ~ 10.31 times of all the other average extraction amounts of holing, 3.87 times of average out to.After taking coal seam reaming of three-dimensional rotation water jet and the anti-reflection method of pressure break, through 33~44 days extraction, ton coal extraction amount can reach 1.86~3.2m 3/ t, average are 2.45 m 3/ t, the extraction rate reaches 28.7%~49.2%, and average extraction rate is 37.7%.

Claims (12)

1. three-dimensional rotation water jet coal seam reaming system, it is connected to the swinging chicksan by the high-pressure hydraulic pumping plant by the high-pressure rubber pipe that is provided with stop valve, be characterised in that: be connected to the high-pressure water jet drilling rod again through behind the rig, high-pressure water jet drilling rod front end connects the high-pressure water jet shower nozzle that has nozzle base, installs the high pressure rotary water jet nozzle on nozzle base.
2. a kind of three-dimensional rotation water jet according to claim 1 coal seam reaming system, be characterised in that: for having coal and gas outburst danger or the coal seam of boring blowing phenomenon being arranged, establish the sealing of hole steel pipe at waterpower reaming boring open section, between sealing of hole steel pipe and waterpower reaming boring, inject sealing material, and at waterpower reaming drilling orifice installation boring blowout hookup, the extraction termination mine gas extraction system pipeline of boring blowout hookup.
3. a kind of three-dimensional rotation water jet according to claim 1 coal seam reaming system, be characterised in that: several nozzle bases of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle axis make it in the distribution that is centrosymmetric perpendicular to the projection on the plane of high-pressure water jet shower nozzle axis.
4. a kind of three-dimensional rotation water jet according to claim 1 coal seam reaming system, be characterised in that: the high pressure rotary water jet nozzle of built-in guide vane wheel is installed on the nozzle base, and high pressure rotary water jet nozzle diameter is 1.7~2.5mm.
5. a kind of three-dimensional rotation water jet according to claim 2 coal seam reaming system, be characterised in that: several nozzle bases of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle axis, make it in the distribution that is centrosymmetric perpendicular to the projection on the plane of high-pressure water jet shower nozzle axis, the high pressure rotary water jet nozzle of built-in guide vane wheel is installed on the nozzle base, and high pressure rotary water jet nozzle diameter is 1.7~2.5mm.
6. a kind of three-dimensional rotation water jet according to claim 3 coal seam reaming system, be characterised in that: the high pressure rotary water jet nozzle of built-in guide vane wheel is installed on the nozzle base, and high pressure rotary water jet nozzle diameter is 1.7~2.5mm.
7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described a kind of three-dimensional rotation water jet coal seam reaming systems, be characterised in that: the mode that is tightly connected of built-in crush seal and compound gasket is all adopted in the connection between being connected between being connected between high pressure rotary water jet shower nozzle and the high-pressure water jet drilling rod, swinging chicksan and the high-pressure water jet drilling rod, the high-pressure water jet drilling rod, the swinging chicksan comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
8. three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break, for there not being the do not hole coal seam of blowing phenomenon of coal and gas outburst danger, play waterpower reaming boring with rig from the tunnel to the coal seam, around waterpower reaming boring, beat some keyholes, be characterised in that: drive the high-pressure water jet drilling rod that connects the high-pressure water jet shower nozzle with rig, after treating that the high-pressure water jet shower nozzle is delivered to the precalculated position, coal seam, start the high-pressure hydraulic pumping plant, open rig, drive the rotation of high-pressure water jet drilling rod, the high-pressure water jet drilling rod is slowly moved back and forth in waterpower reaming boring, utilization is installed in the coal seam section of the rotating jet blanking waterpower reaming boring of the high pressure rotary water jet nozzle generation on the high-pressure water jet shower nozzle and carries out reaming, after the waterpower reaming, withdraw from the high-pressure water jet drilling rod, in waterpower reaming boring, preset steel pipe and default outer wall of steel pipe and waterpower reaming boring inwall are combined closely with sealing material, by the water under high pressure of default steel pipe toward the interior injection of waterpower reaming boring certain pressure, when certain keyhole has the water outflow of carrying ickings in a large number to no longer include the ickings discharge in current, stop the fracturing operation, carry out coal-bed gas and take out in advance.
9. three-dimensional rotation water jet coal seam reaming and the anti-reflection method of pressure break, for the coal seam that has coal and gas outburst danger or have boring blowing phenomenon, play waterpower reaming boring with rig from the tunnel to the coal seam, around waterpower reaming boring, beat some keyholes, establish the sealing of hole steel pipe and the boring blowout hookup is installed in the aperture at waterpower reaming boring open section, the extraction termination mine gas extraction system pipeline of boring blowout hookup, be characterised in that: drive the high-pressure water jet drilling rod that connects the high-pressure water jet shower nozzle with rig, after treating that the high-pressure water jet shower nozzle is delivered to the precalculated position, start the high-pressure hydraulic pumping plant, open rig, drive the rotation of high-pressure water jet drilling rod, the high-pressure water jet drilling rod is slowly moved back and forth in waterpower reaming boring, utilization is installed in the coal seam section of the rotating jet blanking waterpower reaming boring of the high pressure rotary water jet nozzle generation on the high-pressure water jet shower nozzle and carries out reaming, after the waterpower reaming, withdraw from the high-pressure water jet drilling rod, in waterpower reaming boring, preset steel pipe and default outer wall of steel pipe and boring inwall are combined closely with sealing material, by the water under high pressure of default steel pipe toward the interior injection of waterpower reaming boring certain pressure, when certain keyhole has the water outflow of carrying ickings in a large number to no longer include the ickings discharge in current, stop the fracturing operation, carry out coal-bed gas and take out in advance.
10. a kind of three-dimensional rotation water jet coal seam reaming according to claim 8 and the anti-reflection method of pressure break, be characterised in that: reciprocating motion refers to utilize rig drive high-pressure water jet drilling rod to advance or retreats, control the scope of waterpower reaming boring reaming section by the length that changes waterpower reaming boring inner high voltage water jet drilling rod, default steel pipe interior diameter is 20mm, hydraulic pressure during the waterpower reaming is 25~47MPa, flow is 120~200L/min, high pressure rotary water jet nozzle diameter is 1.7~2.5mm, and the certain pressure of fracturing is more than 16MPa.
11. a kind of three-dimensional rotation water jet coal seam reaming according to claim 9 and the anti-reflection method of pressure break, be characterised in that: reciprocating motion refers to utilize rig drive high-pressure water jet drilling rod to advance or retreats, control the scope of waterpower reaming boring reaming section by the length that changes waterpower reaming boring inner high voltage water jet drilling rod, default steel pipe interior diameter is 20mm, hydraulic pressure during the waterpower reaming is 25~47MPa, flow is 120~200L/min, high pressure rotary water jet nozzle diameter is 1.7~2.5mm, and the certain pressure of fracturing is more than 16MPa.
12., be characterised in that: waterpower reaming boring and keyhole are connected to mine gas extraction system by the extraction system pipeline respectively carry out coal-bed gas and take out in advance according to claim 10 or 11 described a kind of three-dimensional rotation water jet coal seam reaming and the anti-reflection methods of pressure break.
CN2011101364016A 2011-05-25 2011-05-25 Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement Pending CN102213077A (en)

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CN102425397A (en) * 2011-12-29 2012-04-25 郑州大学 Method for exploiting coal-bed methane by utilizing water force of horizontal pinnate well of double well-shaft to scour, drill and relieve pressure
CN102619552A (en) * 2012-02-24 2012-08-01 煤炭科学研究总院沈阳研究院 Directional hydraulic pressing penetration, permeability increase and outburst elimination method of guide groove
CN102635388A (en) * 2012-02-24 2012-08-15 煤炭科学研究总院沈阳研究院 Interaction permeability-increasing method of pre-splitting blasting and hydraulic cracking of coal seam
CN102817632A (en) * 2012-08-20 2012-12-12 山西煤炭运销集团科学技术研究有限公司 Method for draining gas of mining layer of mine
CN102877789A (en) * 2012-09-28 2013-01-16 西安美尼矿山设备科技有限公司 Drilling and cutting integrated drilling bit
CN103362538A (en) * 2013-07-15 2013-10-23 中国矿业大学 Coal seam cutting, fracturing, pressure pumping and alternating gas extraction method
CN103775120A (en) * 2014-01-20 2014-05-07 中国矿业大学 Method for realizing drilling and hole sealing based on drill cuttings during uplink gas extraction
CN103883303A (en) * 2014-04-23 2014-06-25 重庆市能源投资集团科技有限责任公司 Orientation jetting and fracturing exploitation method for coal bed gas under coal mine
CN103912302A (en) * 2014-01-26 2014-07-09 中国矿业大学 Seam-penetrating drilling hydrofracturing gas extracting method
CN103939075A (en) * 2014-04-21 2014-07-23 杨世梁 Fracturing method and device for improving coal mine gas extracting effect
CN104612746A (en) * 2015-01-12 2015-05-13 中国矿业大学 Cutting-exploding coupled coal anti-reflection method in drilled hole
CN105781552A (en) * 2016-03-07 2016-07-20 安徽理工大学 Novel high-gas outburst coal seam stereoscopic punching crosscut coal uncovering method
CN105804786A (en) * 2016-03-15 2016-07-27 安徽理工大学 Method for layer penetrating, drilling, pressing punching and permeability improving of soft coal seam floor
CN105909228A (en) * 2016-06-29 2016-08-31 中国矿业大学(北京) Pulse high-pressure hydraulic slotting and fracturing device and method
CN106368730A (en) * 2016-11-08 2017-02-01 淮南矿业(集团)有限责任公司 Coal seam hydraulic pressure jetting breathability-improving system and construction method thereof
CN106393448A (en) * 2016-11-02 2017-02-15 重庆市合川区金星玻璃制品有限公司 Drill bit used for glass drilling and having automatic chip removing function
CN106609677A (en) * 2015-10-22 2017-05-03 中铁二局集团有限公司 A gas extraction and discharge construction method
CN106640025A (en) * 2017-01-18 2017-05-10 淮南矿业(集团)有限责任公司 High-pressure hydro-fracture aggregate adding device for coal seam of mine
CN106958418A (en) * 2017-03-30 2017-07-18 河南理工大学 Weak seam mash gas pumping drilling guard aperture drilling tool
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
CN110259377A (en) * 2019-05-27 2019-09-20 天地科技股份有限公司 A kind of control method of coal mine digging laneway coal rock dynamic disaster
CN110359894A (en) * 2019-06-26 2019-10-22 天地科技股份有限公司 A kind of hydraulic fracturing pressure releasing method and device
CN110953013A (en) * 2019-12-05 2020-04-03 中煤科工集团西安研究院有限公司 Controllable jet flow punching pressure relief and permeability increase device and method for soft coal seam
CN111088992A (en) * 2020-01-13 2020-05-01 煤科集团沈阳研究院有限公司 Ball throwing type high-pressure hydraulic drilling and cutting integrated penetration increasing device and penetration increasing method
CN111810087A (en) * 2020-06-12 2020-10-23 煤科集团沈阳研究院有限公司 Hydraulic large-diameter grading cave-making pressure-relief permeability-increasing device and method
CN111911158A (en) * 2020-08-12 2020-11-10 华北科技学院 Directional fracturing top-control pressure relief device for hard top plate
CN113246223A (en) * 2021-05-27 2021-08-13 中煤科工集团沈阳研究院有限公司 Adjustable ultrahigh-pressure water jet cutting device and using method
CN113323660A (en) * 2021-07-21 2021-08-31 辽宁工程技术大学 High-stress high-hydraulic coal breaking and reaming device
CN113686749A (en) * 2021-08-11 2021-11-23 煤炭科学技术研究院有限公司 High-pressure gas jet punching coal rock breaking fracturing permeability increasing experimental device and method
CN113931590A (en) * 2021-10-25 2022-01-14 国能神东煤炭集团有限责任公司 Hydraulic cutting device and gas extraction pipe cutting method
CN114000873A (en) * 2021-10-20 2022-02-01 中煤科工开采研究院有限公司 Coal seam drilling, cutting and punching integrated equipment and hole expanding method thereof
CN114033312A (en) * 2021-11-23 2022-02-11 河南理工大学 Hydraulic combined mechanical reaming and permeability increasing device and method
CN114109337A (en) * 2021-11-26 2022-03-01 中煤科工集团重庆研究院有限公司 Self-adaptive grooving method and system for hole sealing section of coal mine underground gas extraction drill hole
CN114320164A (en) * 2022-01-04 2022-04-12 中赟国际工程有限公司 Adjustable drill bit for coal mine gas extraction drilling and use method thereof
CN114320444A (en) * 2021-12-28 2022-04-12 中国矿业大学 Composite coal seam wind-water conversion reaming pressure-relief permeability-increasing method
CN114737970A (en) * 2022-04-02 2022-07-12 陕西长武亭南煤业有限责任公司 Pre-crack hydraulic fracturing roof cutting pressure relief construction method
CN114934771A (en) * 2022-06-13 2022-08-23 中国矿业大学 Hydraulic drilling and flushing mining and filling robot and operation method
CN115199231A (en) * 2022-07-15 2022-10-18 中国矿业大学 Hole blowout preventing device and method with integration of slag discharging, dust removing and extraction
CN115596421A (en) * 2022-11-30 2023-01-13 中国矿业大学(北京)(Cn) Device and method for vibrating type hydraulic fracturing permeability-increasing coal body based on frequency monitoring

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Cited By (51)

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Publication number Priority date Publication date Assignee Title
CN102425397A (en) * 2011-12-29 2012-04-25 郑州大学 Method for exploiting coal-bed methane by utilizing water force of horizontal pinnate well of double well-shaft to scour, drill and relieve pressure
CN102619552A (en) * 2012-02-24 2012-08-01 煤炭科学研究总院沈阳研究院 Directional hydraulic pressing penetration, permeability increase and outburst elimination method of guide groove
CN102635388A (en) * 2012-02-24 2012-08-15 煤炭科学研究总院沈阳研究院 Interaction permeability-increasing method of pre-splitting blasting and hydraulic cracking of coal seam
CN102817632B (en) * 2012-08-20 2014-11-05 山西煤炭运销集团科学技术研究有限公司 Method for draining gas of mining layer of mine
CN102817632A (en) * 2012-08-20 2012-12-12 山西煤炭运销集团科学技术研究有限公司 Method for draining gas of mining layer of mine
CN102877789A (en) * 2012-09-28 2013-01-16 西安美尼矿山设备科技有限公司 Drilling and cutting integrated drilling bit
CN102877789B (en) * 2012-09-28 2015-06-10 西安美尼矿山设备科技有限公司 Drilling and cutting integrated drilling bit
CN103362538A (en) * 2013-07-15 2013-10-23 中国矿业大学 Coal seam cutting, fracturing, pressure pumping and alternating gas extraction method
CN103362538B (en) * 2013-07-15 2015-04-22 中国矿业大学 Coal seam cutting, fracturing, pressure pumping and alternating gas extraction method
CN103775120A (en) * 2014-01-20 2014-05-07 中国矿业大学 Method for realizing drilling and hole sealing based on drill cuttings during uplink gas extraction
CN103775120B (en) * 2014-01-20 2016-01-20 中国矿业大学 A kind of up mash gas pumping drilling drilling cuttings method for sealing
CN103912302A (en) * 2014-01-26 2014-07-09 中国矿业大学 Seam-penetrating drilling hydrofracturing gas extracting method
CN103912302B (en) * 2014-01-26 2016-01-13 中国矿业大学 A kind of layer-through drilling hydraulic rupture gas pumping method
CN103939075A (en) * 2014-04-21 2014-07-23 杨世梁 Fracturing method and device for improving coal mine gas extracting effect
CN103883303A (en) * 2014-04-23 2014-06-25 重庆市能源投资集团科技有限责任公司 Orientation jetting and fracturing exploitation method for coal bed gas under coal mine
CN104612746A (en) * 2015-01-12 2015-05-13 中国矿业大学 Cutting-exploding coupled coal anti-reflection method in drilled hole
CN106609677A (en) * 2015-10-22 2017-05-03 中铁二局集团有限公司 A gas extraction and discharge construction method
CN105781552A (en) * 2016-03-07 2016-07-20 安徽理工大学 Novel high-gas outburst coal seam stereoscopic punching crosscut coal uncovering method
CN105804786A (en) * 2016-03-15 2016-07-27 安徽理工大学 Method for layer penetrating, drilling, pressing punching and permeability improving of soft coal seam floor
CN105909228A (en) * 2016-06-29 2016-08-31 中国矿业大学(北京) Pulse high-pressure hydraulic slotting and fracturing device and method
CN105909228B (en) * 2016-06-29 2018-10-09 中国矿业大学(北京) High voltage pulse hydraulic slotted liner technique-fracturing device and method
CN106393448A (en) * 2016-11-02 2017-02-15 重庆市合川区金星玻璃制品有限公司 Drill bit used for glass drilling and having automatic chip removing function
CN106368730A (en) * 2016-11-08 2017-02-01 淮南矿业(集团)有限责任公司 Coal seam hydraulic pressure jetting breathability-improving system and construction method thereof
CN106640025A (en) * 2017-01-18 2017-05-10 淮南矿业(集团)有限责任公司 High-pressure hydro-fracture aggregate adding device for coal seam of mine
CN106958418A (en) * 2017-03-30 2017-07-18 河南理工大学 Weak seam mash gas pumping drilling guard aperture drilling tool
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
CN110259377A (en) * 2019-05-27 2019-09-20 天地科技股份有限公司 A kind of control method of coal mine digging laneway coal rock dynamic disaster
CN110359894A (en) * 2019-06-26 2019-10-22 天地科技股份有限公司 A kind of hydraulic fracturing pressure releasing method and device
CN110953013A (en) * 2019-12-05 2020-04-03 中煤科工集团西安研究院有限公司 Controllable jet flow punching pressure relief and permeability increase device and method for soft coal seam
CN111088992A (en) * 2020-01-13 2020-05-01 煤科集团沈阳研究院有限公司 Ball throwing type high-pressure hydraulic drilling and cutting integrated penetration increasing device and penetration increasing method
CN111088992B (en) * 2020-01-13 2024-04-30 中煤科工集团沈阳研究院有限公司 Ball throwing type high-pressure hydraulic drilling and cutting integrated permeability increasing device and permeability increasing method
CN111810087A (en) * 2020-06-12 2020-10-23 煤科集团沈阳研究院有限公司 Hydraulic large-diameter grading cave-making pressure-relief permeability-increasing device and method
CN111810087B (en) * 2020-06-12 2022-11-08 中煤科工集团沈阳研究院有限公司 Hydraulic large-diameter grading, cave-making, pressure-releasing and permeability-increasing device and method
CN111911158A (en) * 2020-08-12 2020-11-10 华北科技学院 Directional fracturing top-control pressure relief device for hard top plate
CN111911158B (en) * 2020-08-12 2022-02-25 华北科技学院 Directional fracturing top-control pressure relief device for hard top plate
CN113246223A (en) * 2021-05-27 2021-08-13 中煤科工集团沈阳研究院有限公司 Adjustable ultrahigh-pressure water jet cutting device and using method
CN113323660A (en) * 2021-07-21 2021-08-31 辽宁工程技术大学 High-stress high-hydraulic coal breaking and reaming device
CN113686749A (en) * 2021-08-11 2021-11-23 煤炭科学技术研究院有限公司 High-pressure gas jet punching coal rock breaking fracturing permeability increasing experimental device and method
CN114000873A (en) * 2021-10-20 2022-02-01 中煤科工开采研究院有限公司 Coal seam drilling, cutting and punching integrated equipment and hole expanding method thereof
CN113931590A (en) * 2021-10-25 2022-01-14 国能神东煤炭集团有限责任公司 Hydraulic cutting device and gas extraction pipe cutting method
CN114033312A (en) * 2021-11-23 2022-02-11 河南理工大学 Hydraulic combined mechanical reaming and permeability increasing device and method
CN114109337B (en) * 2021-11-26 2023-09-19 中煤科工集团重庆研究院有限公司 Self-adaptive grooving method and system for coal mine underground gas extraction drilling hole sealing section
CN114109337A (en) * 2021-11-26 2022-03-01 中煤科工集团重庆研究院有限公司 Self-adaptive grooving method and system for hole sealing section of coal mine underground gas extraction drill hole
CN114320444A (en) * 2021-12-28 2022-04-12 中国矿业大学 Composite coal seam wind-water conversion reaming pressure-relief permeability-increasing method
CN114320164A (en) * 2022-01-04 2022-04-12 中赟国际工程有限公司 Adjustable drill bit for coal mine gas extraction drilling and use method thereof
CN114320164B (en) * 2022-01-04 2024-04-16 中赟国际工程有限公司 Adjustable drill bit for coal mine gas extraction drilling and use method thereof
CN114737970A (en) * 2022-04-02 2022-07-12 陕西长武亭南煤业有限责任公司 Pre-crack hydraulic fracturing roof cutting pressure relief construction method
CN114934771A (en) * 2022-06-13 2022-08-23 中国矿业大学 Hydraulic drilling and flushing mining and filling robot and operation method
CN115199231A (en) * 2022-07-15 2022-10-18 中国矿业大学 Hole blowout preventing device and method with integration of slag discharging, dust removing and extraction
CN115199231B (en) * 2022-07-15 2023-10-27 中国矿业大学 Device and method for preventing spray holes with slag discharge, dust removal and extraction integration
CN115596421A (en) * 2022-11-30 2023-01-13 中国矿业大学(北京)(Cn) Device and method for vibrating type hydraulic fracturing permeability-increasing coal body based on frequency monitoring

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Application publication date: 20111012