CN209115148U - A kind of coal mine hydraulic fracturing slotting device - Google Patents
A kind of coal mine hydraulic fracturing slotting device Download PDFInfo
- Publication number
- CN209115148U CN209115148U CN201822000990.5U CN201822000990U CN209115148U CN 209115148 U CN209115148 U CN 209115148U CN 201822000990 U CN201822000990 U CN 201822000990U CN 209115148 U CN209115148 U CN 209115148U
- Authority
- CN
- China
- Prior art keywords
- water
- drill bit
- drilling rod
- head
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of coal mine hydraulic fracturing slotting device, including control equipment, drilling rod, high-pressure hydraulic pump and several rotary drilling-heads, rotary drilling-head setting is provided with several water flow spray orifices on drilling rod, on rotary drilling-head；Line pipe and water supplying pipe are provided in drilling rod, water supplying pipe is connected to water flow spray orifice；The power cable and controlling cable of rotary drilling-head are set in line pipe；The power device of rotary drilling-head connects control equipment by controlling cable, the water inlet of high-pressure hydraulic pump connects water supply line, water supplying pipe in the water outlet connection drilling rod of high-pressure hydraulic pump realizes computer and is uniformly controlled, it can will be integrated situations such as cranny development in drilling ambient stress, coal, the uniform release in coal seam is effectively realized without the band that blanks, both increase crack quantity in coal and increase gas permeability of coal seam, it is avoided that stress is concentrated again, its control range is big, the radius of influence can reach tens meters, and subsequent gas pumping effect is more preferable.
Description
Technical field
The utility model belongs to coal mine hydraulic fracturing technology and high-pressure water jet slotting technique field, and in particular to Yi Zhongmei
Mine hydraulic fracturing slotting device.
Background technique
Coal is the most abundant resource of present on earth, at the same be also coal be the important basic energy resource in China, account for about me
The 60% of state's generated energy, since the 21th century, coal in China achieve huge development, coal exploitation in exploitation scale, adopt
It is exploited in coal method, technical equipment towards large-scale synthesis technicalization, but being continuously increased with coal mining depth, watt
This disaster is increasingly severe.Gas Disaster is one of coal mine major casualty, is the significant threat for restricting China's mine safety production,
How to prevent and administer the key subjects that Gas Disaster is China's coal-mine security developments.In China, pass through drilling mash gas extraction
Conventional measure be the important method for administering mine gas explosion accident and coal and gas prominent accident, but China major part coal seam
Poor air permeability, coal seam gas-bearing capacity is high, and geological conditions is more complicated to have serious outburst danger, and gas drainage difficulty is big, often
Rule technology is difficult to reach pre- pumping effect, and how to increase coal seam permeability becomes the bottleneck for restricting gas drainage.In this context I
State applies hydraulic fracturing technology, injects fracturing fluid to coal seam by high-pressure pump, when liquid press-in speed is absorbed more than nature of coal seam
When speed, fluid pressure expands the crack in coal seam, then continues to fill by the load fluid injection fracturing fluid with proppant
Crack, pressure fluid returns row after pressure injection, takes sand proppant and then stays in crack, forms gas guiding channel.Hydraulic fracturing skill
Art control range is big, and the radius of influence can reach tens meters, but is difficult to realize the uniform release of coal body, anti-reflection without the band that blanks.
With the progress of gas drainage, the crack for the surrounding that drills can be gradually closed under the action of crustal stress, therefore will be to drilling surrounding
Coal seam carries out abundant release, prevents closing of fracture, and high pressure water water jet slotting technique can solve the problems, such as this very well.
Utility model content
To solve the above problems, the utility model provides a kind of coal mine hydraulic fracturing slotting device, in conjunction with hydraulic fracturing
Technology and high pressure water slotting technique advantage and disadvantage, providing a kind of easy to operate, the apparent hydraulic fracturing slotting device of effect can
Make the uniform release in coal seam, increase cranny development in coal seam, improves gas drainage efficiency.
In order to achieve the above objectives, the technical solution adopted in the utility model is: a kind of coal mine hydraulic fracturing slotting device,
Including control equipment, drilling rod, high-pressure hydraulic pump and several rotatable drill bits, rotatable drill bit is arranged on drilling rod, rotatable brill
Several water flow spray orifices are provided on head；Line pipe and water supplying pipe are provided in drilling rod, water supplying pipe is connected to water flow spray orifice；Line pipe
The power cable and controlling cable of the middle rotatable drill bit of setting；The power device of rotatable drill bit is connected by controlling cable and is controlled
Equipment, the water inlet of high-pressure hydraulic pump connect water supply line, the water supplying pipe in the water outlet connection drilling rod of high-pressure hydraulic pump.
Water flow spray orifice is uniformly arranged for one week along rotatable drill bit, and the axis of water flow spray orifice divides along the radial direction of rotatable drill bit
Cloth.
Each rotatable drill bit connects control equipment separately through controlling cable.
Rotatable drill bit is installed along the axis interval of drilling rod, and rotatable drill bit and drilling rod are rotatablely connected；Rotatable drill bit connects
The output end of power device is connect, the fixing end of power device is fixedly connected with drilling rod.In drilling rod the quantity of water supplying pipe with it is rotatable
The quantity of drill bit is consistent, and each rotatable drill bit individually connects a water supplying pipe.
The tail end of drilling rod sets route interface tube and water supply interface tube, and outside line pipe and drilling rod internal wiring pipe pass through route
Interface tube connection, water supplying pipe are connect by water supply interface tube with four water supplying pipes inside drilling rod, and Xiang Sigen water supplying pipe supplies water.
Route interface tube and water supply interface tube are all made of standard interface.
Pressure-relief valve is set between the water outlet and water supply interface tube of high-pressure hydraulic pump, is provided with water valve and flow on water supply line
Meter.
It is equipped between the power device and line pipe and water supplying pipe of rotatable drill bit and prevents made of water-and fire-proof material
Water interlayer.
Pressure gauge is additionally provided on high-pressure hydraulic pump.
Rotatable drill bit includes the first rotary drilling-head, the second rotary drilling-head, third rotary drilling-head and the 4th rotary drilling-head,
Four water supplying pipes of setting are rotated with the first rotary drilling-head, the second rotary drilling-head, third rotary drilling-head and the 4th respectively in drilling rod
Drill bit connection.
Compared with prior art, the utility model at least has the advantages that the hydraulic fracturing of the utility model coal mine with cutting
Stitch apparatus structure design rationally, application method is simple, realizes computer and is uniformly controlled, can be by the ambient stress, coal implosion of drilling
Situations such as gap is developed integrates, flexibly adjustment institute drill bit quantity to be started, cutting hydraulic pressure and bit angle etc.；Energy
It is enough to integrate hydraulic fracturing technology and water jet slotting technique, effectively realize the uniform release in coal seam without the band that blanks,
Not only crack quantity in coal had been increased and has increased gas permeability of coal seam, but also be avoided that stress is concentrated, control range is big, and the radius of influence can reach
To tens meters, subsequent gas pumping effect is more preferable.
Detailed description of the invention
Fig. 1 is the operation schematic diagram of the utility model；
Fig. 2 is jackrod structure schematic diagram；
Fig. 3 is the partial structural diagram of rotatable drill bit in the utility model Fig. 1；
In attached drawing: 1- controls equipment, 2- line pipe, the first rotary drilling-head of 3-, the second rotary drilling-head of 4-, 5- third rotary drilling
Head, the 4th rotary drilling-head of 6-, the coal seam 7-, 8- drilling rod, 9- pressure-relief valve, 10- high-pressure hydraulic pump, 11- water valve, 12- water supply line, 13-
Flowmeter, 14- pressure gauge, 15- water flow spray orifice, 16- cut surface, 17- route interface tube, 18- water supply interface tube, 19- waterproof every
Layer.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
High-pressure water jet slotting technique is to inject coal seam after being pressurized by high-pressure hydraulic pump, in underground by the joint-cutting that automatically switches
The nozzle of device sprays, and forms the high-pressure jet with stronger penetration capacity, is cut and be crushed to coal seam.Water jet slot skill
Art can be good at the realization uniform release in coal seam without the band that blanks, but the radius of influence only has several meters.
As shown in Figure 1, a kind of coal mine hydraulic fracturing slot equipment, including control equipment 1, drilling rod 8, the first rotary drilling-head
3, the second rotary drilling-head 4, third rotary drilling-head 5, the 4th rotary drilling-head 6, control equipment 1 pass through the line on line pipe 2 and drilling rod 8
Road interface tube 17 is connected, and controls the rotation of the rotatable drill bit on drilling rod 8, and control equipment 1 is also connected with high pressure water by line pipe 2
Pump 10, controls the discharge pressure of high-pressure hydraulic pump 10；The water inlet of high-pressure hydraulic pump 10 be provided with water valve 11 and flowmeter 13
Water supply line 12 is connected, and the water outlet of high-pressure hydraulic pump 10 is connected with the pipeline with pressure-relief valve 9 with the water supply interface tube of drilling rod；Line
Road interface tube 17 and water supply interface tube 18 are standard interface, facilitate connection and disassembly；The power device of rotatable drill bit uses
Rotating electric machine.
As shown in Fig. 2, be equipped on drilling rod 8 first rotary drilling-head 3, the second rotary drilling-head 4, third rotary drilling-head 5 and
4th rotary drilling-head 6, the first rotary drilling-head 3, the second rotary drilling-head 4, third rotary drilling-head 5 and the 4th rotary drilling-head 6 along
The axis interval of drilling rod 8 is arranged；As shown in figure 3, having a line pipe and four water supplying pipes inside drilling rod 8, the tail portion of drilling rod 8 is set
There are route interface tube 17 and water supply interface tube 18, drilling rod 8 passes through route interface tube 17 and water supply interface tube 18 and exterior tubing phase
Even；Be uniformly distributed a circle water flow spray orifice 15 on rotatable drill bit, the axis of water flow spray orifice 15 along rotatable drill bit radial distribution,
It is provided with power device in rotatable drill bit and drives rotatable bit, is set between power device and respective lines and water supplying pipe
There is the waterproof interlayer 19 of water-and fire-proof, to guarantee safety.
Power cable is set in line pipe 2 and controlling cable, line pipe 2 are connected to route interface tube 17.
It controls equipment and uses computer, control equipment connects moving for high-pressure hydraulic pump 10 and rotatable drill bit by controlling cable
Power device；According to actual conditions in coal seam, the first rotary drilling-head 3, the second rotary drilling-head 4, third rotary drilling-head the 5, the 4th rotate
Drill bit 6 can simultaneously or be respectively started, the rotation angle of rotatable drill bit can flexibly change, angulation change by control equipment
1 control；Control the output pressure of 1 real-time control high-pressure hydraulic pump 10 of equipment.
It is provided with rotating electric machine on drilling rod 8, because 8 size of drilling rod is limited, therefore motor selection structure is simple and reliable for operation
Cage type three-phase asynchronous motor；The stator of rotating electric machine is placed in drilling rod 8, is fixedly connected with drilling rod 8, and rotor setting can bore
Turn in drill bit, drilling rod 8 is connect with rotatable bit, and power supply line is responsible for rotating electric machine and provides electric power, rotation in drilling rod
Rotation between drill bit is independent of each other.After connecting electric power, the stator field cutting rotor conducting bar of rotation is felt in rotor windings
A rotor field should be gone out, rotor is caused to rotate, rotation angle is controlled by internal control route by computer.
As a specific embodiment, bearing is set, bearing inner race and drilling rod 8 are solid between drilling rod 8 and rotary drilling-head
Fixed connection, bearing outer ring are fixedly connected with rotatable drill bit；The output end of rotatable drill bit connection rotating electric machine, rotating electric machine
Fixing end is fixedly connected with drilling rod 8.
In addition, pressure gauge 14 and flowmeter 13 are realized and are communicated to connect by cable and control equipment.
Staff calculates the stress state inside analysis coal body by numerical simulation analysis software, and then predicts coal body
Stress around interior possibility deformed region and drilling concentrates range；According to calculating and simulate as a result, grasping coal body implosion
The crack initiation of gap, developmental state pre-set the rotatable drill bit quantity and high-pressure hydraulic pump water pressure that start.
When use when the present apparatus, crept into first perpendicular to tunnel side wall into coal rock layer using conventional method using drilling rod 8,
Computerized equipment 1 is rotatable according to the rotatable drill bit quantity of the starting pre-set and high-pressure hydraulic pump outlet pressure control
Drill bit and high-pressure hydraulic pump；The water valve 11 for opening water supply pipe 12 persistently supplies water into high-pressure hydraulic pump 10, monitoring pressure in real time table 14
Reading.After high-pressure hydraulic pump reaches preset pressure, pressure-relief valve 9 is opened, water flow spray orifice 15 starts to spray high pressure water flow.Meter
Calculation machine control equipment 1 sets the first rotary drilling-head 3, second rotary drilling-head 4, third rotary drilling-head 5, the 4th rotary drilling-head 6
Rotate angle.When all after setting completed, the rotatable drill bit of computer starting is started to work.Cutting finishes after when one section, leads to
The rotation that computerized equipment 1 closes rotatable drill bit is crossed, water valve 11 stops supplying water, closes high-pressure hydraulic pump 10, take out drilling rod
And being rinsed on it prevents internal duct blocking from influencing to use next time.Subsequent, computerized equipment 1, which is simulated, entirely to be cut through
Journey evaluates cutting effect, makes improvement to next step scheme in time.
The utility model can integrate hydraulic fracturing technology and water jet slotting technique, can be good at realizing coal
Uniformly release not only increases crack quantity in coal and increases gas permeability of coal seam but also stress is avoided to concentrate, control layer without the band that blanks
Range is big, and the radius of influence can reach more than ten meters.
Claims (10)
1. a kind of coal mine hydraulic fracturing slotting device, which is characterized in that including controlling equipment (1), drilling rod (8), high-pressure hydraulic pump
And several rotatable drill bits, rotatable drill bit are arranged on drilling rod (8), and several water flow spray orifices are provided on rotatable drill bit
(15)；It is provided with line pipe (2) and water supplying pipe in drilling rod (8), water supplying pipe is connected to water flow spray orifice (15)；Line pipe is set in (2)
Set the power cable and controlling cable of rotatable drill bit；The power device of rotatable drill bit connects control equipment by controlling cable
(1), the water inlet of high-pressure hydraulic pump (10) connects water supply line (12), in water outlet connection drilling rod (8) of high-pressure hydraulic pump (10)
Water supplying pipe.
2. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that water flow spray orifice (15) edge can revolve
Turn to be uniformly arranged for drill bit one week, the radial distribution of the axis of water flow spray orifice (15) along rotatable drill bit.
3. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that each rotatable drill bit is independent
Control equipment (1) is connected by controlling cable.
4. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that rotatable drill bit is along drilling rod
(8) axis interval installation, rotatable drill bit and drilling rod (8) are rotatablely connected；The output end of rotatable drill bit connecting power device,
The fixing end of power device is fixedly connected with drilling rod (8).
5. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that drilling rod (8) interior water supplying pipe
Quantity is consistent with the quantity of rotatable drill bit, and each rotatable drill bit individually connects a water supplying pipe.
6. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that the tail end of drilling rod (8) sets line
Road interface tube (17) and water supply interface tube (18), outside line pipe and drilling rod (8) internal wiring pipe pass through route interface tube (17)
Connection, water supplying pipe are connect by water supply interface tube (18) four water supplying pipes internal with drilling rod (8), and Xiang Sigen water supplying pipe supplies
Water, route interface tube (17) and water supply interface tube (18) are all made of standard interface.
7. coal mine hydraulic fracturing slotting device according to claim 6, which is characterized in that the water outlet of high-pressure hydraulic pump (10)
Pressure-relief valve (9) are set between mouth and water supply interface tube (18), are provided with water valve (11) and flowmeter (13) on water supply line (12).
8. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that the power of rotatable drill bit fills
Set and line pipe (2) and water supplying pipe between be equipped with the waterproof interlayer made of water-and fire-proof material (19).
9. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that high-pressure hydraulic pump is also set on (10)
It is equipped with pressure gauge (14).
10. coal mine hydraulic fracturing slotting device according to claim 1, which is characterized in that rotatable drill bit includes the
One rotary drilling-head (3), the second rotary drilling-head (4), third rotary drilling-head (5) and the 4th rotary drilling-head (6), drilling rod (8) is interior to be set
Four water supplying pipes are set to rotate with the first rotary drilling-head (3), the second rotary drilling-head (4), third rotary drilling-head (5) and the 4th respectively
Drill bit (6) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000990.5U CN209115148U (en) | 2018-11-30 | 2018-11-30 | A kind of coal mine hydraulic fracturing slotting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000990.5U CN209115148U (en) | 2018-11-30 | 2018-11-30 | A kind of coal mine hydraulic fracturing slotting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115148U true CN209115148U (en) | 2019-07-16 |
Family
ID=67207165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822000990.5U Active CN209115148U (en) | 2018-11-30 | 2018-11-30 | A kind of coal mine hydraulic fracturing slotting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209115148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088993A (en) * | 2020-02-11 | 2020-05-01 | 山东科技大学 | Drilling-cutting-sealing-pressing drilling equipment and method for deep low-permeability high-gas coal seam |
-
2018
- 2018-11-30 CN CN201822000990.5U patent/CN209115148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088993A (en) * | 2020-02-11 | 2020-05-01 | 山东科技大学 | Drilling-cutting-sealing-pressing drilling equipment and method for deep low-permeability high-gas coal seam |
| CN111088993B (en) * | 2020-02-11 | 2020-12-08 | 山东科技大学 | Drilling-cutting-sealing-pressing drilling equipment and method for deep low-permeability high-gas coal seam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105156085B (en) | The coal mine underground coal bed tree-shaped uniform anti-reflection method of drilling composite fracturing | |
| US11506041B2 (en) | Drilling-slitting-sealing-fracturing device and method for a deep low-permeability gassy coal seam | |
| CN106285699B (en) | Earth pressure balanced shield, EPBS mud cake based on synchronous jet stream prevents system | |
| CN104653161B (en) | The fracturing integrated anti-reflection drainage device of underground coal mine pulsed water slot and method | |
| WO2018099262A1 (en) | Rock drilling, swelling and chiselling combined machine based on high-pressure foam medium | |
| CN105909228B (en) | High voltage pulse hydraulic slotted liner technique-fracturing device and method | |
| CN102121395B (en) | Method for integrated comprehensive management of gas in low-permeability single coal bed | |
| CN103696800B (en) | A kind of brill cuts pressure and takes out method | |
| CN108194070A (en) | A kind of ultrasonic action and hydraulic slotted liner technique integrated apparatus, complex intensifying gas drainage system and method | |
| AU2014336858A1 (en) | Method for enhanced fuel gas extraction by coal mine underground gas-liquid dual-phase alternating phase-driven fracturing of coal body | |
| CN103195468A (en) | System process for conducting efficient strengthened extraction in surrounding rock | |
| CN104847326B (en) | Blocking type hydraulic pulse generation device and method | |
| AU2015299587A1 (en) | Enhanced phase-change fracking gas extraction method for low-permeability coal bed | |
| CN203891922U (en) | Effective extraction system for gas in coal seam | |
| CN105422164A (en) | Efficient water injection method and device of hydraulic fracture permeability increase auxiliary coal seam | |
| CN109184653B (en) | Novel slotting device and method for coal mine hydraulic fracturing | |
| CN111441817B (en) | Method for reinforcing gas extraction by synergistic effect of coal seam drilling jet fracturing and mining pressure | |
| CN204754895U (en) | Device is adopted to colliery slot of pulse water conservancy in pit - anti -reflection taking out of fracturing integration | |
| CN103256025A (en) | Composite well net type coal bed gas mining method | |
| CN209115148U (en) | A kind of coal mine hydraulic fracturing slotting device | |
| CN114000826A (en) | Coal-breaking permeability-increasing device and method by using advanced premixed pulsed abrasive water jet | |
| CN108756883A (en) | A kind of coal mine tight roof slip casting fracturing process and system | |
| CN207813598U (en) | It is a kind of to be motivated by ultrasound and hydraulic slotted liner technique integrated apparatus, complex intensifying gas drainage system | |
| CN208416512U (en) | A kind of brill punching press integrated apparatus | |
| CN201486523U (en) | High-pressure water return preventing safety control device in borehole rod below high-pressure water head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 710077 Xi'an high tech Zone, Shaanxi, Jin Jin Road, No. 1, Shaanxi Coal Chemical Industry Group Co., Ltd. Patentee after: Shaanxi Coal and Chemical Technology Institute Co., Ltd. Address before: Room 807, Jinling Building, 59 Aerospace Avenue, Chang'an District, Xi'an City, Shaanxi Province Patentee before: Shaanxi Coal and Chemical Technology Institute Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |