CN205778987U - A kind of high-pressure hydraulic fracturing water injection system for coal seams - Google Patents
A kind of high-pressure hydraulic fracturing water injection system for coal seams Download PDFInfo
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- CN205778987U CN205778987U CN201620681728.XU CN201620681728U CN205778987U CN 205778987 U CN205778987 U CN 205778987U CN 201620681728 U CN201620681728 U CN 201620681728U CN 205778987 U CN205778987 U CN 205778987U
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- water injection
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- injection unit
- pressure
- pipeline
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Abstract
A kind of high-pressure hydraulic fracturing water injection system for coal seams, belongs to technical equipment field.It is characterized in that: include multiple water injection unit (3) for carrying out water filling to coal seam (22), static pressure water injecting pipeline (4) and dynamical pressure water infusion pipeline (5) it has been simultaneously connected with at the entrance and exit of force (forcing) pump (6), static pressure water injecting pipeline (4) is connected with the pipeline portions of water injection unit (3) with dynamical pressure water infusion pipeline (5) simultaneously, force (forcing) pump (6) is connected with control chamber (9) and is realized controlling by control chamber (9), and the circuit part of water injection unit (3) is connected with control chamber (9) simultaneously.In this high-pressure hydraulic fracturing water injection system for coal seams, by arranging static pressure water injecting pipeline and dynamical pressure water infusion pipeline, it is achieved that coal seam to be carried out dynamic pressure and the water flooding regime of static pressure combination, it is achieved that water injection pressure and the accurate control of water injection rate, substantially increase flood effectiveness.
Description
Technical field
A kind of high-pressure hydraulic fracturing water injection system for coal seams, belongs to technical equipment field.
Background technology
Coal-bed flooding is water injecting drilling of constructing in advance in coal seam before back production, is injected by pressurized water in coal seam, increases
Coal body moisture, thus change its physico-mechanical properties, to reach to prevent the purpose of coal seam disaster accident.Coal-bed flooding is possible not only to
Play the effect reducing coal dust, but also can fundamentally prevent the generation of the disaster such as coal and gas prominent, bump.State
Interior most bump collieries erosion control engineering mainly has unloading pressure by blasting, coal-bed flooding release, large diameter borehole release, wherein coal seam
Water filling release engineering has reduction stress of coal seam and concentrates, and softens coal seam and fundamentally reduces the advantage of Burst Tendency of Coal Seam,
But also can realize reducing the effect of dust concentration in coal production process.But existing coal-bed flooding Apparatus and method for generally needs
Wanting the long period, take the most, management difficulty is big, and water injection pressure and water injection rate cannot realize accurately controlling.In view of above-mentioned feelings
Condition, is badly in need of a kind of coal-bed flooding automatization controlling device of innovation and method, it is achieved Centralized Monitoring, reduces that coal-bed flooding is artificial, carry
High operational efficiency.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, it is provided that a kind of by arranging dynamic pressure
Water injecting pipeline and static pressure water injecting pipeline, it is achieved that coal seam is carried out dynamic pressure and the water flooding regime of static pressure combination, it is achieved that water filling pressure
Power and the accurate control of water injection rate, substantially increase the high-pressure hydraulic fracturing water injection system for coal seams of flood effectiveness.
This utility model solves its technical problem and be the technical scheme is that this high-pressure hydraulic fracturing coal-bed flooding system
System, it is characterised in that: include multiple water injection unit for carrying out water filling to coal seam, at the entrance and exit of force (forcing) pump simultaneously
Connect and have static pressure water injecting pipeline and a dynamical pressure water infusion pipeline, static pressure water injecting pipeline and dynamical pressure water infusion pipeline simultaneously with the pipe of water injection unit
Road part is connected, and force (forcing) pump is connected with control chamber and is realized controlling by control chamber, with control while of the circuit part of water injection unit
Case connects.
Preferably, in the pipeline portions of described water injection unit, described dynamical pressure water infusion pipeline connects water injection unit electricity
The porch of water injection unit effusion meter it is connected to after magnet valve；After described static pressure water injecting pipeline series connection water injection unit check valve together
Time be connected to the porch of water injection unit effusion meter, after the outlet series connection water injection unit pressure transmitter of water injection unit effusion meter
Import injection manifold road, injection manifold road is drawn the pipeline for coal seam carries out water filling.
Preferably, the two ends at described water injection unit electromagnetic valve are respectively arranged with water injection unit hand-operated valve.
Preferably, in the circuit part of described water injection unit, the signal line that control chamber is drawn is simultaneously connected with each
Nine way junction boxes and one end of three-way terminal box in group water injection unit, nine way junction boxes are simultaneously connected with water injection unit pressure inverting
The signal output part of device and the signal input part of water injection unit electromagnetic valve；Three-way terminal box in each group of water injection unit connects
The signal output part of water injection unit effusion meter, the three-way terminal box in each group of water injection unit also simultaneously with another set water filling list
Three-way terminal box in unit connects.
Preferably, it is separately provided at the entrance and exit of described force (forcing) pump force (forcing) pump water entry pressure and goes out
Water pressure carries out the pressure transmitter detected, and pressure transmitter is connected with described control chamber.
Preferably, described force (forcing) pump is connected with control chamber by on-off transducer and feeding switch.
Compared with prior art, this utility model is had the beneficial effect that
1, in this high-pressure hydraulic fracturing water injection system for coal seams, by arranging static pressure water injecting pipeline and dynamical pressure water infusion pipeline,
Achieve and coal seam is carried out dynamic pressure and the water flooding regime of static pressure combination, it is achieved that water injection pressure and the accurate control of water injection rate, greatly
Improve greatly flood effectiveness.
2, by arranging water injection unit effusion meter in water injection unit, convenient to judging water that each water injection unit exports
Total amount is monitored.
3, by the water injection unit pressure transmission device being arranged in water injection unit, convenient to whether the injecting process occurs leakage
Water judges.
4, coal seam humidity is conveniently monitored by the humidity sensor by being arranged in data monitoring boring, and to deserved
To the data of coal seam moisture content, conveniently flood effectiveness is judged.
5, at the inlet pipeline (static pressure water injecting pipeline) of presser unit and the outlet pipeline (dynamical pressure water infusion pipeline) of force (forcing) pump
On be respectively arranged with the pressure transmission device that intake pressure and discharge pressure are detected, pass through pressure changing, it is achieved that
Whether force (forcing) pump is existed hydropenia failure condition judge.
Accompanying drawing explanation
Fig. 1 is high-pressure hydraulic fracturing water injection system for coal seams structural representation.
Fig. 2 is high-pressure hydraulic fracturing water injection system for coal seams water injection unit pipeline connection diagram.
Fig. 3 is high-pressure hydraulic fracturing water injection system for coal seams water injection unit circuit connection diagram.
Wherein: 1, ring exchanger 2, network extender 3, water injection unit 4, static pressure water injecting pipeline 5, dynamical pressure water infusion pipe
Road 6, force (forcing) pump 7, on-off transducer 8, feeding switch 9, control chamber 10, injection manifold road 11, water injection unit pressure become
Send device 12, water injection unit effusion meter 13, water injection unit electromagnetic valve 14, water injection unit check valve 15, water injection unit hand-operated valve
16, supply line 17, signal line 18, four-way junction box 19, nine way junction box 20, three-way terminal box 21, power supply box
22, coal seam 23, water injecting drilling 24, data monitoring boring 25, water injecting pipeline.
Detailed description of the invention
Fig. 1 ~ 3 are most preferred embodiments of the present utility model, and 1 ~ 3 pair of this utility model does furtherly below in conjunction with the accompanying drawings
Bright.
As it is shown in figure 1, high-pressure hydraulic fracturing water injection system for coal seams, including control chamber 9, feeding switch 8 one end and control chamber 9
Connecting, the other end is connected with force (forcing) pump 6 by on-off transducer 7.Entrance in the presser unit of force (forcing) pump 6 connects has static pressure to note
Water lines 4, the water in static pressure water injecting pipeline 4 through force (forcing) pump 6 presser unit pressurize after presser unit delivery outlet by
Dynamical pressure water infusion pipeline 5 exports, and dynamical pressure water infusion pipeline 5 is connected in the multiple water injection unit 3 being set up in parallel, static pressure water injecting pipeline 4
It is simultaneously connected in the multiple water injection unit 3 being set up in parallel, therefore can realize the dynamical pressure water infusion to coal seam 22 by water injection unit 3
With static pressure water filling.
Inlet pipeline (static pressure water injecting pipeline 4) and outlet pipeline (dynamical pressure water infusion pipeline 5) in the presser unit of force (forcing) pump 6
On be respectively arranged with the pressure transmission device that intake pressure and discharge pressure are detected, pass through pressure changing, it is judged that add
Whether press pump 6 exists hydropenia fault, it is provided that reporting to the police and hydropenia decompression termination of pumping protection, the signal output part of pressure transmission device is connected to
In control chamber 9, in dynamical pressure water infusion pipeline 5, it is additionally provided with check valve.The port of control chamber 9 is also associated with two by wire
Group network extender 2, network extender 2 is connected with ring exchanger 1, and the while of ring exchanger 1, the host computer with control room (is schemed
In be not drawn into) in Access Control looped network, the host computer in control room has both the display of system, the storage of data and OPC simultaneously and sends out
The function of cloth.
When carrying out practical operation, coal seam 22 is offered multiple water injecting drilling 23, then at each water injecting drilling 23
Side is supporting arranges data monitoring boring 24, draws many water injecting pipelines 25 from injection manifold road 10, and by water injecting pipeline 25
In corresponding loading water injecting drilling 23, coal seam 22 is carried out water filling, pacify in the data monitoring boring 24 in each water injecting drilling 23 side
Dress is for the sensor detecting coal seam 22 water injection parameter, such as the humidity sensor for detecting the humidity in coal seam 22
Device and for the strain gauge that the stress in coal seam 22 is monitored.
In water injection unit pipeline connection diagram as shown in Figure 2, dynamical pressure water infusion pipeline 5 connects water injection unit electromagnetic valve
The porch of water injection unit effusion meter 12 it is connected to, on the input of water injection unit electromagnetic valve 13 and the pipeline of outfan after 13
It is also respectively provided with water injection unit hand-operated valve 15.Static pressure water injecting pipeline 4 is connected and is connected simultaneously to after water injection unit check valve 14
The porch of water injection unit effusion meter 12.The port of export of water injection unit effusion meter 12 is by pipeline series connection water injection unit pressure inverting
Import in injection manifold road 10 after device 11.In this high-pressure hydraulic fracturing water injection system for coal seams, it is provided with three groups of water injection unit
3, when actual enforcement, it is also possible to the water injection unit 3 of other quantity is set.The outfan of all water injection unit 3 converges simultaneously
Enter in injection manifold road 10, when coal seam 22 is carried out water filling, injection manifold road 10 is drawn corresponding pipeline, and by pipeline
Stretch in the boring in coal seam 22, coal seam 22 is carried out water filling.
In water injection unit circuit connection diagram as shown in Figure 3, control chamber 9 signal line 17 drawn connects simultaneously
Connect nine way junction boxes 19 and one end of three-way terminal box 20 in each group of water injection unit 3.In each group of water injection unit 3 nine are led to
The signal that rosette 19 is simultaneously connected with the signal output part of water injection unit pressure transmitter 11 and water injection unit electromagnetic valve 13 is defeated
Enter end, for the pressure data that water injection unit pressure transmitter 11 records is delivered in control chamber 9, and realize in control chamber 9
The controller control to water injection unit electromagnetic valve 13 duty.Three-way terminal box 20 in each group of water injection unit 3 connects note
The signal output part of water unit effusion meter 12, for the flow signal that water injection unit effusion meter 12 exports is delivered in control chamber 9,
Three-way terminal box 20 in each group of water injection unit 3 is connected with the three-way terminal box 20 in another set water injection unit 3 the most simultaneously,
Realize the connection of the three-way terminal box 20 in all water injection unit 3 and control chamber 9.
The supply line 16 introduced by power supply is connected with the four-way junction box 18 in often group water injection unit 3, and four connect
Line box 18 connects often organizes the power supply box 21 in water injection unit 3 and the feeder ear of water injection unit electromagnetic valve 13, the electricity of power supply box 21
The energization input of source output terminal connection water injection unit pressure transmitter 11, with another set water filling list while of four-way junction box 18
Four-way junction box 18 in unit 3 connects, it is achieved the four-way junction box 18 in all water injection unit 3 and the connection of supply line 16.
Specific works process and operation principle are as follows:
First, utilize rig to get out water injecting drilling 23 on coal seam 22, and get out for putting around water injecting drilling 23
Put the data monitoring boring 24 of sensor.Then from injection manifold road 10, the water injecting pipeline 25 of respective numbers is drawn and by water filling
Pipeline 25 is during respectively correspondence loads water injecting drilling 23, water injecting pipeline 25 install after according to sealing of hole flow process to water injecting drilling 23
Carry out sealing of hole operation.Then it is enclosed in boring procedure, in data monitoring boring 24, the sensing that coal seam 22 state is monitored
Device.Include at the sensor that coal seam 22 is monitored: for the humidity sensor that the humidity in coal seam 22 is detected and
For the strain gauge that the stress in coal seam 22 is monitored.Finally utilize water filling flow process by putting into water injecting drilling 23
Water injecting pipeline 25 carries out water filling to coal seam 22.Utilize the sensor putting into data monitoring boring 24, to coal in the injecting process
The state of layer 22 is monitored in real time, utilizes the water injection unit pressure transmitter 11 being arranged in water injection unit 3 and water filling simultaneously
The duty of water injection unit 3 is monitored by unit stream gauge 12.
When coal seam 22 is carried out water filling, it is first shut off water injection unit electromagnetic valve 13, water injection unit hand-operated valve 15 and adds
Press pump 6, utilizes static pressure water injecting pipeline 4 that coal seam 22 is carried out static pressure water filling, when carrying out static pressure water filling, uses the pressure of 2 ~ 3MPa
Sustained water injection 3 ~ 5 days.It is then turned on water injection unit electromagnetic valve 13, water injection unit hand-operated valve 15 and starts force (forcing) pump 6, utilizing dynamic pressure
Water injecting pipeline 5 carries out dynamical pressure water infusion to coal seam 22, and water injection pressure reaches 20MPa.Combined by static pressure water filling and dynamical pressure water infusion
Water flooding regime, the single water flooding regime of the prior art that compares, add the crack rate in coal seam 22, improve coal seam 22 further
Moisture content.
Utilize this high-pressure hydraulic fracturing water injection system for coal seams, by traditional static pressure infiltration type coal-bed flooding innovation be static pressure,
The water flooding regime that dynamic pressure combines, water injection pressure is increased to 0-20MPa by 2-3MPa water injection pressure, can also under infiltration coal body premise
Enough abundant fracturing coal bodies, destroy coal body elastic construction, reduce Burst Tendency, solve that coal strength is big, immersion ability is weak
Problem.It is optimized for dynamic and static pressure alternative expression water filling by static pressure water filling, first passes through the infiltration of long-time static pressure, make coal body reach the fullest
With rear, then by high pressure fracturing, increase crack, improve water injection rate, thus increase flood effectiveness.Simultaneously by supporting water under high pressure
Power fracturing water injection system for coal seams, it is achieved the data such as aboveground monitoring long-range to down-hole, dynamic and static pressure automatic switchover, flow pressure are implemented to adopt
Collection, improves water-injection efficiency.
In the injecting process, judge that each water injection unit 3 is defeated by being arranged on water injection unit effusion meter 12 in water injection unit 3
The total amount of the water gone out；And whether gone out in the injecting process by the water injection unit pressure transmission device 11 being arranged in water injection unit 3
Now leak and judge.Flood effectiveness is judged by the sensor by being arranged in data monitoring boring 24 simultaneously: pass through
Monitoring to the humidity in coal seam 22, is converted to the moisture content data in coal seam 22, when in coal seam 22 average moisture content at 3.2%-
4.2%, moisture content average increase, between 1% ~ 2.5% scope, represents that flood effectiveness is good.
Coal seam 22 humidity with moisture content conversion method is: in the state in experiment lab simulation coal seam 22, utilizes identical quiet
The mode that pressure and dynamic pressure combine carries out water filling to the coal seam 22 of experiment lab simulation, and arranges wet to coal seam 22 of humidity sensor
Degree is constantly sampled, and utilizes prior art to be measured the moisture content in coal seam 22, obtains coal by many group sampled datas
Humidity and the corresponding relation of water content in layer 22.
Above-mentioned sealing of hole flow process, concrete operations are as follows: branched hole packer head and the tail connect the sealing of hole forming a length of 8 ~ 20m
Device group, and at the outer pipe collar of hole packer of outermost end and with outermost end hole packer inside first segment hole packer in the middle part of be respectively wound around
One end cotton yarn, and tying tight with iron wire, and with outermost end hole packer inside first segment the outer pipe collar of hole packer at be wound around woven bag,
Inserting a water rope in the middle part of woven bag, woven bag and water rope iron wire fasten, second section inside outermost end hole packer
Hole packer in the middle part of and outer pipe collar at be respectively wound around one section of cotton yarn.
Liquid outlet at Ma Lisan grouting pump connects a water rope, and with outermost end hole packer inside the hole packer of first segment
In water rope be attached, in Ma Lisan grouting pump, pour Ma Lisan hole sealing agent into, by Ma Lisan grouting pump by Ma Lisan seal
Hole agent is injected in water injecting drilling 23.
First in water injecting drilling 23, put into an a length of 5m put into slip casting short tube, then set in the outer section of water injecting drilling 23
Put length and be at least the cement of 2m or length is at least the Ma Lisan of 4m.Slip casting short tube is received on high-pressure injection pump, utilizes height
Pressure injection stock pump injects cement mortar in water injecting drilling 23, till making grouting pressure reach 20MPa.
Owing to water injection pressure is risen to about 20MPa by 2 traditional ~ 3MPa, for supertension water filling sealing of hole problem, pass through
This sealing of hole flow process, utilizes Ma Lisan, cement mortar multistage high pressure deep hole hole sealing technology, it is possible to effectively solve seepy question.
The above, be only preferred embodiment of the present utility model, is not that this utility model is made other form
Restriction, any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified as equivalent
The Equivalent embodiments of change.But every without departing from technical solutions of the utility model content, real according to technology of the present utility model
Any simple modification, equivalent variations and the remodeling that confrontation above example is made, still falls within the guarantor of technical solutions of the utility model
Protect scope.
Claims (6)
1. a high-pressure hydraulic fracturing water injection system for coal seams, it is characterised in that: include multiple for carrying out water filling to coal seam (22)
Water injection unit (3), at the entrance and exit of force (forcing) pump (6), be simultaneously connected with static pressure water injecting pipeline (4) and dynamical pressure water infusion pipe
Road (5), static pressure water injecting pipeline (4) and dynamical pressure water infusion pipeline (5) are connected with the pipeline portions of water injection unit (3) simultaneously, force (forcing) pump
(6) be connected with control chamber (9) and realized controlling by control chamber (9), the circuit part of water injection unit (3) simultaneously with control chamber (9)
Connect.
High-pressure hydraulic fracturing water injection system for coal seams the most according to claim 1, it is characterised in that: at described water injection unit
(3), in pipeline portions, described dynamical pressure water infusion pipeline (5) is connected to water injection unit stream after connecting water injection unit electromagnetic valve (13)
The porch of gauge (12)；It is connected simultaneously to note after described static pressure water injecting pipeline (4) series connection water injection unit check valve (14)
The porch of water unit effusion meter (12), water injection unit effusion meter (12) outlet series connection water injection unit pressure transmitter (11) it
Rear remittance injection manifold road (10), at injection manifold road (10) the upper pipeline drawn for coal seam (22) carry out water filling.
High-pressure hydraulic fracturing water injection system for coal seams the most according to claim 2, it is characterised in that: at described water injection unit
The two ends of electromagnetic valve (13) are respectively arranged with water injection unit hand-operated valve (15).
High-pressure hydraulic fracturing water injection system for coal seams the most according to claim 1, it is characterised in that: at described water injection unit
(3), in circuit part, the signal line (17) that control chamber (9) is drawn is simultaneously connected with in each group of water injection unit (3) nine and connects
Line box (19) and one end of three-way terminal box (20), nine way junction boxes (19) are simultaneously connected with water injection unit pressure transmitter (11)
Signal output part and the signal input part of water injection unit electromagnetic valve (13)；Three way junctions in each group of water injection unit (3)
Box (20) connects the signal output part of water injection unit effusion meter (12), the three-way terminal box (20) in each group of water injection unit (3)
It is connected with the three-way terminal box (20) in another set water injection unit (3) also simultaneously.
High-pressure hydraulic fracturing water injection system for coal seams the most according to claim 1, it is characterised in that: at described force (forcing) pump
(6) pressure being separately provided at entrance and exit detecting force (forcing) pump (6) water entry pressure and discharge pressure becomes
Device, pressure transmitter is sent to be connected with described control chamber (9).
High-pressure hydraulic fracturing water injection system for coal seams the most according to claim 1, it is characterised in that: described force (forcing) pump (6)
It is connected with control chamber (9) by on-off transducer (7) and feeding switch (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620681728.XU CN205778987U (en) | 2016-07-01 | 2016-07-01 | A kind of high-pressure hydraulic fracturing water injection system for coal seams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620681728.XU CN205778987U (en) | 2016-07-01 | 2016-07-01 | A kind of high-pressure hydraulic fracturing water injection system for coal seams |
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| Publication Number | Publication Date |
|---|---|
| CN205778987U true CN205778987U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620681728.XU Expired - Fee Related CN205778987U (en) | 2016-07-01 | 2016-07-01 | A kind of high-pressure hydraulic fracturing water injection system for coal seams |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927266A (en) * | 2016-07-01 | 2016-09-07 | 山东唐口煤业有限公司 | High-pressure hydraulic fracturing coal seam water injection system and automatic water injection monitoring method |
| CN107355222A (en) * | 2017-07-18 | 2017-11-17 | 中南大学 | The flood pattern and its water-filling method of a kind of deep tunnel |
| CN108708702A (en) * | 2018-04-10 | 2018-10-26 | 山东科技大学 | A kind of device and method of low porosity coal seam alternation intensification flooding anatonosis wetting |
| CN108843371A (en) * | 2018-05-08 | 2018-11-20 | 山东科技大学 | It is a kind of based on the coal seam subregion Dynamic Water Injection process for adopting release |
-
2016
- 2016-07-01 CN CN201620681728.XU patent/CN205778987U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927266A (en) * | 2016-07-01 | 2016-09-07 | 山东唐口煤业有限公司 | High-pressure hydraulic fracturing coal seam water injection system and automatic water injection monitoring method |
| CN105927266B (en) * | 2016-07-01 | 2018-05-08 | 山东唐口煤业有限公司 | A kind of high-pressure hydraulic fracturing water injection system for coal seams and the automatically-monitored method of water filling |
| CN107355222A (en) * | 2017-07-18 | 2017-11-17 | 中南大学 | The flood pattern and its water-filling method of a kind of deep tunnel |
| CN108708702A (en) * | 2018-04-10 | 2018-10-26 | 山东科技大学 | A kind of device and method of low porosity coal seam alternation intensification flooding anatonosis wetting |
| CN108843371A (en) * | 2018-05-08 | 2018-11-20 | 山东科技大学 | It is a kind of based on the coal seam subregion Dynamic Water Injection process for adopting release |
| CN108843371B (en) * | 2018-05-08 | 2019-11-26 | 山东科技大学 | It is a kind of based on the coal seam subregion Dynamic Water Injection process for adopting release |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20180701 |
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