CN113431530A - Coal seam hydraulic slotting and combined fracturing comprehensive permeability increasing device - Google Patents
Coal seam hydraulic slotting and combined fracturing comprehensive permeability increasing device Download PDFInfo
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- CN113431530A CN113431530A CN202110729095.0A CN202110729095A CN113431530A CN 113431530 A CN113431530 A CN 113431530A CN 202110729095 A CN202110729095 A CN 202110729095A CN 113431530 A CN113431530 A CN 113431530A
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- 239000003245 coal Substances 0.000 title claims abstract description 141
- 230000035699 permeability Effects 0.000 title description 13
- 238000007789 sealing Methods 0.000 claims abstract description 56
- 238000005553 drilling Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007921 spray Substances 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 16
- 230000006978 adaptation Effects 0.000 claims description 6
- 238000005065 mining Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000001179 sorption measurement 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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Abstract
The invention discloses a comprehensive permeability-increasing device for hydraulic slotting and combined fracturing of a coal seam, which relates to the technical field of coal seam mining devices and comprises a mobile trolley, four uniformly arranged moving mechanisms arranged at the bottom of the mobile trolley, and an air suction pump, a water spray pump and a pressure pump which are arranged at the top of the mobile trolley, wherein a power assembly for slotting and fracturing the coal seam is arranged at the top of the mobile trolley, and a hole sealing assembly for sealing a drilled hole and a slotting and fracturing unit for drilling the hole are arranged on the power assembly. The hydraulic slotting and fracturing combined comprehensive permeability-increasing device is reasonable in structure, when the hydraulic slotting and fracturing combined comprehensive permeability-increasing device is used, after a coal seam is slotted, the device does not need to be drawn out of a drilled hole, a person does not need to carry out long-time hole sealing operation on the drilled hole, fracturing permeability-increasing operation can be directly carried out after the drilled hole is slotted, the coal seam mining process is more time-saving and labor-saving, and the coal seam mining speed is increased.
Description
Technical Field
The invention relates to the technical field of coal seam mining devices, in particular to a coal seam hydraulic slotting and combined fracturing comprehensive permeability increasing device.
Background
The coal bed gas is unconventional natural gas which is associated with coal and is mainly stored in a coal bed in an adsorption state, the reserves are abundant in China, the development and the utilization of the natural gas have the functions of adjusting an energy structure, improving the coal mine safety and protecting the ecological environment, the coal bed gas is required to be extracted firstly during coal mining, and the coal bed can be treated by using the existing better hydraulic cutting joint fracturing comprehensive permeability-increasing device before the coal bed gas is extracted.
When the existing hydraulic slotting combined fracturing comprehensive permeability-increasing device is used, the device needs to be pulled out of a drill hole and long-time hole sealing operation is carried out after hydraulic slotting, and then fracturing permeability-increasing operation can be carried out on the cracks in the drill hole continuously, so that time and labor are wasted in the coal seam mining process, and the coal seam mining speed is reduced.
Disclosure of Invention
An object of this application provides a coal seam hydraulic cutting joint fracturing is synthesized and is increased permeability device, and hydraulic cutting joint fracturing is synthesized and is increased permeability device when using, carries out the slot back to the coal seam, need not to take the device out from drilling, need not personnel and carries out long-time hole sealing operation to drilling, can directly carry out the anti-reflection operation of fracturing after carrying out the slot to drilling, makes coal seam exploitation process labour saving and time saving more, improves the speed of coal seam exploitation.
In order to achieve the above purpose, the present application provides the following technical solutions: a coal seam hydraulic cutting joint fracturing comprehensive permeability-increasing device comprises a mobile trolley, four uniformly-arranged moving mechanisms, an air suction pump, a water spray pump and a pressure pump, wherein the four uniformly-arranged moving mechanisms are arranged at the bottom of the mobile trolley; the hole sealing assembly is used for sealing holes drilled by the slotting fracturing unit, and the power assembly is used for controlling the slotting fracturing unit and the hole sealing assembly to work on a coal bed.
Borrow by above-mentioned structure, through power component, can control the position of slot fracturing unit, when making slot fracturing unit carry out drilling to the coal seam, make the hole sealing subassembly can seal drilling, make slot fracturing unit carry out the slot to the coal seam after, need not to take slot fracturing unit out from drilling, need not personnel and carry out long-time hole sealing operation to drilling, can directly carry out the anti-reflection operation of fracturing after carrying out the slot to drilling, make coal seam exploitation process labour saving and time saving more, improve the speed of coal seam exploitation.
Preferably, the power component including install in four fixed branch at mobile station car top, four the installation base is installed at fixed branch's top, two fixed otic placodes are installed at the top of installation base, two rotate on the lateral wall of fixed otic placode and install the rotation lead screw, the screw has cup jointed the removal bottom plate on the rotation lead screw, the top of removing the bottom plate is installed and is supported the fixture block, it has seted up the rotation hole on the lateral wall of support fixture block, rotate on the inner wall in rotation hole and install adapter sleeve, the slot fracturing unit the hole sealing subassembly is all installed on the adapter sleeve, the adapter sleeve with the aspiration pump the water jet pump the force (forcing) pump is connected.
Further, through power component, when making to rotate the lead screw and taking place to rotate, can drive and remove the bottom plate and take place to remove, it is more stable when making the support fixture block remove, makes hydraulic cutting joint fracturing synthesize anti-reflection device more stable smooth and easy when using, can take out the coal bed gas in the coal seam better faster, improves the speed of coal seam exploitation.
Preferably, telescopic sleeves are installed at the output ends of the air pump, the water spray pump and the pressure pump, fixed thread sleeves are installed at one ends of the three telescopic sleeves, connecting thread grooves are formed in the side wall of one end of each connecting sleeve, and the three fixed thread sleeves are installed in a matched mode with the connecting thread grooves.
Furthermore, through the telescopic pipe, when the position of the connecting sleeve changes, the telescopic pipe can deform in a bending and extending mode, the fixed threaded sleeve can be stably connected with the connecting threaded groove, coal bed gas in a coal bed can be better pumped out by the device, and people can more safely mine the coal bed.
Preferably, an adjusting motor is installed at the top of the installation base, one end of the rotating screw rod is installed at the output end of the adjusting motor, and the bottom of the movable bottom plate is in contact with the top of the installation base.
Furthermore, through the installation base, when the adjusting motor is started, the rotating screw rod is rotated, so that the movable bottom plate is more stable when moving, and the hydraulic cutting and combined fracturing comprehensive permeability-increasing device is safer and more stable when being used.
Preferably, install the motor support on the lateral wall of removal bottom plate, motor power is installed at the top of motor support, cup joint on motor power's the output and install the driving pulley, cup joint on the adapter sleeve and install driven pulley, the driving pulley with the last tensioning of driven pulley has the connection belt.
Furthermore, when the driving belt wheel rotates through the power motor, the driven belt wheel rotates under the driving of the connecting belt, so that the connecting sleeve can rotate more stably, and the hydraulic cutting and fracturing combined comprehensive permeability increasing device is more stable and labor-saving in use.
Preferably, the slotting fracturing unit including install in the connection drill bit of adapter sleeve one end, the conducting hole has been seted up on the lateral wall of connection drill bit, set up a plurality of evenly-arranged slotting holes on the lateral wall of adapter sleeve, it is a plurality of all install one-way slotting head on the inner wall in slotting hole.
Furthermore, through the slotting and fracturing unit, the connecting drill bit can drill the coal bed, the one-way slotting head sprays water in the drilled hole, the hydraulic jet cracks in the drilled hole, the hydraulic slotting and fracturing combined comprehensive permeability-increasing device can perform slotting and fracturing on the coal bed more quickly and stably, and coal bed gas is better pumped out.
Preferably, the hole sealing subassembly including slip cup joint in the last removal sliding sleeve of adapter sleeve, cup joint on the lateral wall of removal sliding sleeve and install the closing plate, set up a plurality of mounting holes that evenly set up on the lateral wall of closing plate, it is a plurality of all rotate on the inner wall of mounting hole and install the screw nail, it is a plurality of all seted up sealing thread on the lateral wall of screw nail, it is a plurality of the screw nail all with adapter sleeve adaptation installation.
Furthermore, through the hole sealing assembly, a plurality of spiral nails are drilled into the coal bed, the movable sliding sleeve enters the drill hole, the sealing plate is more and more tightly attached to the coal bed, the hydraulic slotting combined fracturing comprehensive permeability-increasing device is enabled to conduct slotting on the coal bed, the device does not need to be drawn out of the drill hole, long-time hole sealing operation is conducted on the drill hole without personnel, fracturing permeability-increasing operation can be directly conducted on the drill hole after slotting, the coal bed mining process is more time-saving and labor-saving, and the coal bed mining speed is increased.
Preferably, the side wall of the sealing plate is provided with two limiting clamping plates which are arranged in an up-down symmetrical manner relative to the center of the sealing plate, the side wall of the supporting clamping block, which is close to the sealing plate, is provided with two limiting clamping grooves, and the two limiting clamping plates are respectively and adaptively arranged on the inner walls of the two limiting clamping grooves.
Furthermore, through the limiting clamping plates, the hydraulic cutting joint fracturing comprehensive permeability-increasing device cannot rotate under the action of the two limiting clamping grooves when drilling, so that the hydraulic cutting joint fracturing comprehensive permeability-increasing device is more stable in cutting fracture on a coal bed.
Preferably, it is a plurality of all cup joint on the screw and install driven gear, the last driving gear of installing of cup jointing of adapter sleeve, it is a plurality of driven gear all with the driving gear adaptation installation.
Furthermore, through the spiral nails, the driving gear drives the driven gears to rotate simultaneously, so that the spiral nails can be screwed into the coal bed simultaneously, and the hydraulic cutting and combined fracturing comprehensive permeability-increasing device is more stable in use.
To sum up, the technical effect and the advantage of this application:
1. the coal seam mining device is reasonable in structure, the position of the slot fracturing unit can be controlled through the power assembly, so that the hole sealing assembly can seal a drilled hole while the slot fracturing unit drills the coal seam, the slot fracturing unit does not need to be drawn out of the drilled hole after the slot fracturing unit performs slot on the coal seam, long-time hole sealing operation of the drilled hole is not needed, the slot fracturing unit can be directly subjected to fracturing anti-reflection operation after the drilled hole is slotted, the coal seam mining process is more time-saving and labor-saving, and the coal seam mining speed is increased;
2. according to the hydraulic cutting seam combined fracturing comprehensive permeability-increasing device, when a hole is drilled, the limiting clamping plates cannot rotate under the action of the two limiting clamping grooves, the sealing plate cannot rotate when the connecting sleeve rotates, the driving gear can drive the driven gear to stably rotate, the spiral nail can more stably and smoothly thread into a coal bed, the sealing plate and the movable sliding sleeve can better seal the drilled hole, the hydraulic cutting seam combined fracturing comprehensive permeability-increasing device can better fracture and expand cracks in the drilled hole, coal bed gas in the coal bed can be more easily pumped out, the pumping speed of the coal bed gas is increased, and further the mining speed of a person on the coal bed is increased;
3. according to the invention, after the coal bed gas is extracted, the adjusting motor is started, the two limiting clamping plates are reinserted into the two limiting clamping grooves, the power motor is controlled to rotate reversely, the connecting sleeve is controlled to rotate reversely, the driving gear drives the driven gears to rotate reversely, the spiral nails are driven to rotate reversely, and the spiral nails are screwed out of the coal bed, the adjusting motor is controlled to rotate reversely, so that the hydraulic cutting seam combined fracturing comprehensive permeability increasing device is taken out of the coal bed, the hydraulic cutting seam combined fracturing comprehensive permeability increasing device is more convenient and rapid to use, and personnel can better mine the coal bed;
4. according to the hydraulic cutting and fracturing combined permeability-increasing device, when the position of the connecting sleeve is changed by the telescopic sleeve, the telescopic sleeve can deform such as bending and extending, the fixed threaded sleeve can be stably connected with the connecting threaded groove, coal bed gas in a coal bed can be well pumped out by the device, personnel can more safely mine the coal bed, when the rotating screw rod rotates, the movable bottom plate can be stably attached to the mounting base to move, and the hydraulic cutting and fracturing combined permeability-increasing device is safer and more stable when in use;
5. according to the invention, the movable bottom plate is controlled to be at different positions, so that the drilling depth of the connecting drill bit and the connecting sleeve into the coal seam is changed, and when people mine different coal seams, the hydraulic slotting combined fracturing comprehensive permeability-increasing device can be better controlled to extract coal bed gas in the coal seam, so that the coal seam mining process is smoother, the coal seam mining speed is increased, and the hydraulic slotting combined fracturing comprehensive permeability-increasing device is higher in practicability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a first-view perspective structure of a coal seam hydraulic slotting combined fracturing comprehensive permeability increasing device;
FIG. 2 is a schematic diagram of a second-view perspective structure of the coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device;
FIG. 3 is a schematic diagram of a partially cut-away three-dimensional structure of a coal seam hydraulic slotting combined fracturing comprehensive permeability-increasing device;
FIG. 4 is a schematic diagram of a partial three-dimensional structure of a coal seam hydraulic slotting combined fracturing comprehensive permeability-increasing device;
FIG. 5 is a partially enlarged perspective view of FIG. 4;
FIG. 6 is an enlarged schematic perspective structure view of a slotting fracturing unit;
FIG. 7 is an enlarged perspective view of the sealing assembly;
fig. 8 is an enlarged perspective view of a portion a in fig. 3.
In the figure: 1. moving the trolley; 2. installing a base; 3. a moving mechanism; 4. a screw nail; 5. connecting a sleeve; 6. a sealing plate; 7. supporting the clamping block; 8. an air pump; 9. a water jet pump; 10. a pressure pump; 11. fixing the supporting rod; 12. a telescopic sleeve; 13. fixing the threaded sleeve; 14. connecting a drill bit; 15. a driving gear; 16. a driven gear; 17. moving the base plate; 18. rotating the screw rod; 19. a power motor; 20. adjusting the motor; 21. connecting a belt; 22. a motor bracket; 23. a driving pulley; 24. a driven pulley; 25. connecting the thread groove; 26. a limiting clamping groove; 27. fixing the ear plate; 28. one-way slotting head; 29. a limiting clamping plate; 30. and moving the sliding sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1-8, the comprehensive permeability increasing device for hydraulic slotting and combined fracturing of a coal seam comprises a mobile trolley 1, four uniformly arranged moving mechanisms 3 installed at the bottom of the mobile trolley 1, an air suction pump 8, a water spray pump 9 and a pressure pump 10 installed at the top of the mobile trolley 1, wherein the mobile trolley 1 can be any metal plate in the prior art, such as an iron plate.
The suction pump 8, the water jet pump 9 and the pressure pump 10 may be mounted in any manner known in the art to be connected to the mobile trolley 1, for example, by screwing.
The top of the mobile trolley 1 is provided with a power assembly for slotting and fracturing a coal seam, the power assembly is provided with a hole sealing assembly for sealing a drilled hole and a slotting fracturing unit for drilling the hole, the air pump 8, the water spray pump 9 and the pressure pump 10 are all connected with the slotting fracturing unit, and the hole sealing assembly and the slotting fracturing unit are installed in a matched mode; the hole sealing assembly is used for sealing holes drilled by the slot fracturing unit, and the power assembly is used for controlling the slot fracturing unit and the hole sealing assembly to work on a coal bed. Through power component's setting, can control the position of slot fracturing unit, when making slot fracturing unit carry out drilling to the coal seam, make the hole sealing subassembly can seal drilling, make slot fracturing unit carry out the slot to the coal seam after, need not to take out slot fracturing unit from drilling, need not personnel and carry out long-time hole sealing operation to drilling, can directly carry out the anti-reflection operation of fracturing after carrying out the slot to drilling, make coal seam exploitation process labour saving and time saving more, improve the speed of coal seam exploitation.
As a preferred embodiment of this embodiment, as shown in fig. 1-5, the power assembly includes four fixed struts 11 mounted on the top of the mobile cart 1, and the fixed struts 11 may be any metal rod in the prior art, such as an iron rod, which is welded and fixed to the top of the mobile cart 1. The mounting bases 2 are mounted on the tops of the four fixing support rods 11, and the mounting bases 2 may be any metal plate in the prior art, such as an iron plate, which is welded and fixed to the tops of the fixing support rods 11. Two fixing lugs 27 are mounted on the top of the mounting base 2, and the fixing lugs 27 may be any metal plate in the prior art, such as an iron plate, which is welded and fixed to the top of the mounting base 2. The side walls of the two fixed lug plates 27 are rotatably provided with a rotating screw rod 18, the rotating screw rod 18 is in threaded sleeve connection with a movable bottom plate 17, the top of the movable bottom plate 17 is provided with a supporting fixture block 7, the supporting fixture block 7 can be any metal block in the prior art, and the supporting fixture block and the top of the movable bottom plate 17 are welded and fixed. The lateral wall of the supporting fixture block 7 is provided with a rotating hole, the inner wall of the rotating hole is rotatably provided with a connecting sleeve 5, the cutting crack fracturing unit and the hole sealing component are both arranged on the connecting sleeve 5, and the connecting sleeve 5 is connected with an air pump 8, a water spray pump 9 and a pressure pump 10. Through power component's setting, when making to rotate lead screw 18 and taking place to rotate, can drive and remove bottom plate 17 and take place to remove, it is more stable when making support fixture block 7 remove, makes hydraulic cutting joint fracturing synthesize anti-reflection device more stable smooth and easy when using, can take out the coal bed gas in the coal seam better faster, improves the speed of coal seam exploitation.
In this embodiment, as shown in fig. 1 to 4, telescopic sleeves 12 are respectively installed at output ends of the air pump 8, the water spray pump 9 and the pressure pump 10, fixed threaded sleeves 13 are respectively installed at one ends of the three telescopic sleeves 12, a connecting threaded groove 25 is formed in a side wall of one end of the connecting sleeve 5, and the three fixed threaded sleeves 13 are respectively installed in a manner of being matched with the connecting threaded groove 25. Through the setting of telescopic tube 12, when making adapter sleeve 5 position change, deformation such as crooked extension can take place for telescopic tube 12, what make fixed thread bush 13 can be stable is connected with connecting thread groove 25, what messenger's device can be better takes out the coal bed gas in the coal seam, and is safer when making personnel exploit the coal seam.
In the present embodiment, as shown in fig. 4 and 5, the adjustment motor 20 is mounted on the top of the mounting base 2, and the adjustment motor 20 may be any servo motor in the prior art, such as a servo motor with a model number of 80st-m02430, which is screwed with the top of the mounting base 2 for fixing. One end of the rotating screw rod 18 is arranged at the output end of the adjusting motor 20, and the bottom of the moving bottom plate 17 is contacted with the top of the mounting base 2. Through the setting of installation base 2, when making accommodate motor 20 start-up, make to rotate lead screw 18 and take place to rotate, it is more stable when making removal bottom plate 17 remove, and it is more safe and stable when making the hydraulic pressure slotting combine fracturing comprehensive permeability-increasing device use.
In the present embodiment, as shown in fig. 5, a motor bracket 22 is mounted on a side wall of the moving base 17, and the motor bracket 22 may be any metal plate in the prior art, such as an iron plate, which is welded and fixed to the side wall of the moving base 17. The motor support 22 is provided with a power motor 19 at the top, and the power motor 19 may be any servo motor in the prior art, such as a servo motor with a model number of 80st-m02430, which is screwed with the top of the motor support 22 for fixing. The output end of the power motor 19 is sleeved with a driving belt wheel 23, the connecting sleeve 5 is sleeved with a driven belt wheel 24, and the driving belt wheel 23 and the driven belt wheel 24 are tensioned with a connecting belt 21. Through the arrangement of the power motor 19, when the driving belt wheel 23 rotates, the driven belt wheel 24 rotates under the driving of the connecting belt 21, so that the connecting sleeve 5 can rotate more stably, and the hydraulic cutting and fracturing combined comprehensive permeability increasing device is more stable and labor-saving in use.
In the present embodiment, as shown in fig. 6, the fracture fracturing unit includes a connecting drill 14 mounted at one end of the connecting sleeve 5, a via hole is opened on a side wall of the connecting drill 14, a plurality of uniformly arranged fracture holes are opened on a side wall of the connecting sleeve 5, and a unidirectional fracture head 28 is mounted on an inner wall of each of the plurality of fracture holes. Through the setting of slot fracturing unit, make connecting drill bit 14 can drill the coal seam to make one-way slot head 28 spray water in the drilling, make in the drilling by the water conservancy erupts the crack, make the water conservancy slot combine the fracturing to synthesize anti-reflection device can be swiftly more stable carry out the slot fracturing to the coal seam, make coal bed gas better taken out.
In this embodiment, as shown in fig. 7, the hole sealing assembly includes that the slip cup joints the removal sliding sleeve 30 on adapter sleeve 5, cup joints on the lateral wall of removal sliding sleeve 30 and installs closing plate 6, sets up a plurality of mounting holes that evenly set up on the lateral wall of closing plate 6, all rotates on the inner wall of a plurality of mounting holes and installs screw nail 4, has all seted up sealing thread on the lateral wall of a plurality of screw nails 4, and a plurality of screw nails 4 all install with adapter sleeve 5 adaptation. Through the setting of hole sealing subassembly, make a plurality of screw nails 4 bore in the coal seam, make and remove sliding sleeve 30 and get into in the drilling, make closing plate 6 and coal seam paste more and more tight, make the joint fracturing of water conservancy slot synthesize anti-reflection device and carry out the slot to the coal seam after, need not to take out the device from drilling, need not personnel and carry out long-time hole sealing operation to drilling, can directly carry out the anti-reflection operation of fracturing after carrying out the slot to drilling, make coal seam exploitation process labour saving and time saving more, improve the speed of coal seam exploitation.
In the present embodiment, as shown in fig. 7 and 8, two position limiting snap-gauge plates 29 are mounted on the side wall of the sealing plate 6, and are disposed vertically symmetrically with respect to the center of the sealing plate 6, and the position limiting snap-gauge plates 29 may be any metal plate in the prior art, such as an iron plate, and are welded and fixed to the side wall of the sealing plate 6. Two limiting clamping grooves 26 are formed in the side wall of one side, close to the sealing plate 6, of the supporting clamping block 7, and the two limiting clamping plates 29 are respectively installed on the inner walls of the two limiting clamping grooves 26 in an adaptive mode. Through the arrangement of the limiting clamping plates 29, the hydraulic cutting joint fracturing comprehensive permeability-increasing device can not rotate under the action of the two limiting clamping grooves 26 when drilling, so that the hydraulic cutting joint fracturing comprehensive permeability-increasing device is more stable when cutting fracture is carried out on a coal seam.
In this embodiment, as shown in fig. 8, the plurality of screws 4 are respectively sleeved with a driven gear 16, the connecting sleeve 5 is sleeved with a driving gear 15, and the plurality of driven gears 16 are respectively mounted to be matched with the driving gear 15. Through the setting of screw nail 4, make driving gear 15 drive a plurality of driven gear 16 and take place to rotate simultaneously, make a plurality of screw nails 4 can the spiral shell simultaneously advance in the coal seam, it is more stable when making the hydraulic power slotting combine fracturing comprehensive permeability-increasing device to use.
The working principle of the invention is as follows: when the hydraulic slotting combined fracturing comprehensive permeability-increasing device is used, the device is moved to the side of a coal seam needing to extract coal bed gas, a fixed threaded sleeve 13 on a water spray pump 9 is connected with a connecting threaded groove 25, the water spray pump 9 and an adjusting motor 20 are started, a rotating screw rod 18 is rotated, a moving bottom plate 17 is further moved, a supporting fixture block 7 drives a connecting sleeve 5 to move, a power motor 19 is started simultaneously, a driving belt wheel 23 is rotated, a driven belt wheel 24 is simultaneously rotated under the driving of a connecting belt 21, the connecting sleeve 5 is further rotated, water in the water spray pump 9 passes through the connecting sleeve 5 and is sprayed out from a conducting hole in a connecting drill bit 14, the connecting drill bit 14 can move into the coal seam while rotating, the coal seam is drilled with a certain depth of holes, the one-way slotting head 28 is opened, water is sprayed out of the coal seam with the holes from the one-way slotting head 28, the periphery of a drilled hole is provided with a plurality of hydraulic cutting cracks, the connecting sleeve 5 rotates to drive the driving gear 15 to rotate, the driven gears 16 rotate, the spiral nails 4 rotate identically, the spiral nails 4 are further driven to drill into the coal seam, the movable sliding sleeve 30 can enter into the drilled hole, when the sealing threads on the spiral nails 4 continuously penetrate into the coal seam, the sealing plate 6 can be more and more tightly attached to the coal seam, the power motor 19 is stopped, the adjusting motor 20 rotates reversely to drive the connecting sleeve 5 and the connecting drill bit 14 to retreat in the drilled hole, the fixed threaded sleeve 13 on the pressure pump 10 is connected with the connecting threaded groove 25, the pressure pump 10 is started to increase the pressure value inside the drilled hole, after certain pressure is continuously controlled, the cracks in the drilled hole are increased under the pressure, when water seeps out from the coal seam, can be connected fixed thread bush 13 on the aspiration pump 8 with connecting thread groove 25, start aspiration pump 8, make coal bed gas by aspiration pump 8 from the drilling internal suction, make hydraulic cutting joint fracturing synthesize anti-reflection device when using, carry out the slotting back to the coal seam, need not to take out the device from the drilling, need not personnel and carry out long-time hole sealing operation to the drilling, can directly carry out the anti-reflection operation of fracturing after carrying out the slotting to the drilling, make coal seam exploitation process labour saving and time saving more, improve the speed of coal seam exploitation.
When drilling the coal seam, spacing cardboard 29 is in spacing draw-in groove 26, under the effect of two spacing draw-in grooves 26, make spacing cardboard 29 can not take place to rotate, and then when making adapter sleeve 5 take place to rotate, closing plate 6 can not take place to rotate, make driving gear 15 can drive the stable emergence rotation of driven gear 16, make during the spiral shell that screw nail 4 can be more stable smooth and easy advances the coal seam, make closing plate 6 and removal sliding sleeve 30 can be better drilling sealed, make the hydraulic fracture joint synthesize anti-reflection device can be better crack fracturing in the drilling expand, make the coal bed gas in the coal seam take out more easily, accelerate the extraction speed of coal bed gas, and then the personnel of improving are to the exploitation speed in coal seam.
After the coal bed gas in the coal bed is extracted, when the hydraulic cutting joint fracturing comprehensive permeability-increasing device needs to be taken out of the coal bed, the adjusting motor 20 is started, the two limiting clamping plates 29 are reinserted into the two limiting clamping grooves 26, the power motor 19 is controlled to rotate reversely, the connecting sleeve 5 is further made to rotate reversely, the driving gear 15 is made to rotate reversely at the same time, the driven gears 16 are driven to rotate reversely, the spiral nails 4 are made to rotate reversely, the spiral nails 4 can be stably screwed out of the coal bed, the adjusting motor 20 is controlled to rotate reversely, the hydraulic cutting joint fracturing comprehensive permeability-increasing device is taken out of the coal bed, the hydraulic cutting joint fracturing comprehensive permeability-increasing device is more convenient and faster to use, and personnel can better mine the coal bed.
Through telescopic tube 12, when can making the 5 positions of adapter sleeve change, deformation such as crooked extension can take place for telescopic tube 12, what make fixed thread bush 13 can be stable is connected with connecting thread groove 25, what make the device can be better takes out the coal bed gas in the coal seam, it is safer when making personnel exploit the coal seam, when rotating lead screw 18 and rotating, subsides that removal bottom plate 17 can be stable takes place to remove on installation base 2, safer and more stable when making the joint fracturing of hydraulic cutting seam synthesize anti-reflection device use.
The rotary screw rod 18 is controlled to rotate, the movable bottom plate 17 is controlled to be in different positions, the depth of the connecting drill bit 14 and the connecting sleeve 5 in the coal seam can be changed, when people exploit different coal seams, the hydraulic cutting joint fracturing comprehensive permeability increasing device can be better controlled to extract coal bed gas in the coal seam, the coal bed exploiting process is smoother, the coal bed exploiting speed is increased, and the hydraulic cutting joint fracturing comprehensive permeability increasing device is higher in practicability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a coal seam hydraulic cutting joint fracturing is synthesized and is given birth to anti-reflection device, includes mobile trolley (1), install in moving mechanism (3) of four even settings of mobile trolley (1) bottom, install in aspiration pump (8) and water jet pump (9) and force (forcing) pump (10) at mobile trolley (1) top, its characterized in that: the top of the mobile trolley (1) is provided with a power assembly for slotting and fracturing a coal seam, the power assembly is provided with a hole sealing assembly for sealing a drilled hole and a slotting fracturing unit for drilling the hole, the air suction pump (8), the water spray pump (9) and the pressure pump (10) are all connected with the slotting fracturing unit, and the hole sealing assembly and the slotting fracturing unit are installed in a matched mode; the hole sealing assembly is used for sealing holes drilled by the slotting fracturing unit, and the power assembly is used for controlling the slotting fracturing unit and the hole sealing assembly to work on a coal bed.
2. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 1, characterized in that: power component is including installing in four fixed branch (11) at mobile station car (1) top, four installation base (2) are installed at the top of fixed branch (11), two fixed otic placodes (27), two are installed at the top of installation base (2) rotate on the lateral wall of fixed otic placode (27) and install rotation lead screw (18), it has moved bottom plate (17) to rotate screw rod (18) and go up the screw-thread cup joint, the top of moving bottom plate (17) is installed and is supported fixture block (7), the rotation hole has been seted up on the lateral wall of supporting fixture block (7), rotate on the inner wall in hole and install connecting sleeve (5), the slot fracturing unit the hole sealing subassembly is all installed on connecting sleeve (5), connecting sleeve (5) with aspiration pump (8) water jet pump (9), The pressure pump (10) is connected.
3. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 2 is characterized in that: air pump (8) water jet pump (9) telescopic tube (12), three are all installed to the output of force (forcing) pump (10) fixed thread cover (13) are all installed to the one end of telescopic tube (12), connecting thread groove (25) have been seted up on the one end lateral wall of connecting tube (5), and are three fixed thread cover (13) all with connecting thread groove (25) adaptation installation.
4. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 2 is characterized in that: adjusting motor (20) is installed at the top of installation base (2), the one end of rotation lead screw (18) install in adjusting motor (20)'s output, the bottom of removal bottom plate (17) with the top of installation base (2) contacts.
5. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 2 is characterized in that: install motor support (22) on the lateral wall of removal bottom plate (17), motor power (19) are installed at the top of motor support (22), cup joint on the output of motor power (19) and install driving pulley (23), cup joint on adapter sleeve (5) and install driven pulley (24), driving pulley (23) with the tensioning has connecting belt (21) on driven pulley (24).
6. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 2 is characterized in that: the slot fracturing unit is including installing in connect drill bit (14) of adapter sleeve (5) one end, the conducting hole has been seted up on the lateral wall of connecting drill bit (14), set up the slot hole of a plurality of even settings on the lateral wall of adapter sleeve (5), it is a plurality of all install one-way slot head (28) on the inner wall in slot hole.
7. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 2 is characterized in that: the hole sealing subassembly including slip cup joint in removal sliding sleeve (30) on adapter sleeve (5), cup joint on the lateral wall of removal sliding sleeve (30) and install closing plate (6), set up a plurality of mounting holes that evenly set up on the lateral wall of closing plate (6), it is a plurality of all rotate on the inner wall of mounting hole and install screw (4), it is a plurality of all seted up sealed screw thread on the lateral wall of screw (4), it is a plurality of screw (4) all with adapter sleeve (5) adaptation installation.
8. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 7, characterized in that: the side wall of the sealing plate (6) is provided with two limiting clamping plates (29) which are arranged in an up-down symmetrical mode relative to the center of the sealing plate (6), the side wall of one side, close to the sealing plate (6), of the supporting clamping block (7) is provided with two limiting clamping grooves (26), and the two limiting clamping plates (29) are respectively installed on the inner walls of the two limiting clamping grooves (26) in a matched mode.
9. The coal seam hydraulic slotting and combined fracturing comprehensive permeability-increasing device according to claim 7, characterized in that: it is a plurality of all cup joint on spiral nail (4) and install driven gear (16), cup joint on adapter sleeve (5) and install driving gear (15), it is a plurality of driven gear (16) all with driving gear (15) adaptation installation.
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| CN202110729095.0A CN113431530A (en) | 2021-06-29 | 2021-06-29 | Coal seam hydraulic slotting and combined fracturing comprehensive permeability increasing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110729095.0A CN113431530A (en) | 2021-06-29 | 2021-06-29 | Coal seam hydraulic slotting and combined fracturing comprehensive permeability increasing device |
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| CN113431530A true CN113431530A (en) | 2021-09-24 |
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