CN108343411A - A kind of more well injecting device and method - Google Patents
A kind of more well injecting device and method Download PDFInfo
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- CN108343411A CN108343411A CN201810159262.0A CN201810159262A CN108343411A CN 108343411 A CN108343411 A CN 108343411A CN 201810159262 A CN201810159262 A CN 201810159262A CN 108343411 A CN108343411 A CN 108343411A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 19
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 24
- 239000003381 stabilizer Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 56
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000002343 natural gas well Substances 0.000 description 3
- 238000013473 artificial intelligence Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000011079 streamline operation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of more well injecting device and method, wherein described device include：Hydraulic pressure supply unit, valve group selecting unit, hydraulic control unit, injecting valve terminal, pedestal and injecting header unit；The hydraulic pressure supply unit is connect with the hydraulic control unit, and the hydraulic pressure supply unit is powered liquid to hydraulic control unit；The hydraulic control unit is moved to the top of injecting valve terminal corresponding with the well head of injecting is waited under the driving of the valve group selecting unit；The hydraulic control unit connect or is detached from the injecting valve terminal, is turned on and off the injecting valve terminal；The injecting header unit is fixedly connected with the injecting valve terminal, the injecting valve terminal waits for that the well head of injecting is connect by pipeline with described, to the well head injecting for waiting for injecting, injecting valve terminal described in one group of the well head correspondence of injecting is wherein waited for described in each；The hydraulic pressure supply unit, valve group selecting unit and injecting header unit are fixed on the pedestal.
Description
Technical field
This application involves natural gas wellhead injecting field, more particularly to a kind of more well injecting device and method.
Background technology
Currently, mostly using a pump control a well or the injecting mode of twoport well, this kind greatly for natural gas well injecting
For mode there are pump house area occupied is big, pipeline is complicated, the shortcomings of needing manual hand manipulation time-consuming and laborious.
In practical applications, for natural gas well injecting, there are two kinds of technology modes, and one is each natural gas well factories to match
A set of injecting device is had, all processes need to be in the manual operations of each well site scene；Another kind is built in each gas gathering station
Injecting workshop, individual well or twin-well use an injectant pump, injectant pump to be respectively configured with a set of injecting, injecting pipeline and a flowmeter
Measure device, need injecting well head and injection length by manual control.Both the above method or well site execute-in-place is needed,
Pipeline is complicated, needs the quantity of injectant pump more, labor intensity is big, it is therefore desirable to which it is simple to design a kind of pipeline, operation intelligence, peace
Dress, more well injecting devices easy to maintenance.
Invention content
In view of the above-mentioned problems, the embodiment of the present application discloses a kind of more well injecting devices, including：Hydraulic pressure supply unit, valve
Group selection unit, hydraulic control unit, injecting valve terminal, pedestal and injecting header unit；
The hydraulic pressure supply unit is connect with the hydraulic control unit, and the hydraulic pressure supply unit is to the hydraulic control
Unit is powered liquid；
The hydraulic control unit is moved to corresponding with the well head of injecting is waited under the driving of the valve group selecting unit
The top of the injecting valve terminal；
The hydraulic control unit connect or is detached from the injecting valve terminal, is turned on and off the injecting valve group list
Member；
The injecting header unit is fixedly connected with the injecting valve terminal, and the injecting valve terminal waits noting with described
The well head of agent is connected by pipeline, to the well head injecting for waiting for injecting, wherein waits for that the well head of injecting corresponds to one described in each
The group injecting valve terminal；
The hydraulic pressure supply unit, valve group selecting unit and injecting header unit are fixed on the pedestal.
In the schematical embodiment of the application, more well injecting devices further include：Connection unit；
The connection unit includes：Oil pipe and drag chain, the oil pipe are fixed on the inside of the drag chain；
The hydraulic pressure supply unit is connect with the hydraulic control unit by the oil pipe and drag chain.
In the schematical embodiment of the application, the hydraulic pressure supply unit includes：Fire-proof motor, overflow
Valve, hydraulic station, hydraulic station stabilizer blade and hydraulic station lengthened plate；
The hydraulic station is fixed on the top of the hydraulic station stabilizer blade；
The fire-proof motor is fixed on the top of the hydraulic station, and the fire-proof motor is connect with the hydraulic station；
The input terminal of the overflow valve is connect with the hydraulic station, and the output end of the overflow valve is lengthened with the hydraulic station
Plate is fixedly connected；
The first oil hole, the oil pipe of first oil hole and the connection unit are provided on the hydraulic station lengthened plate
It is fixedly connected, the hydraulic station lengthened plate exports power by first oil hole and oil pipe to the hydraulic control unit
Liquid；
The hydraulic station lengthened plate is fixedly connected with the drag chain.
In the schematical embodiment of the application, the hydraulic control unit includes：Support plate, oil cylinder, liquid
Pressure valve block, hydraulic valve block lengthened plate, hydraulic lock, solenoid valve and pressure switch；
The second oil hole is provided on the hydraulic valve block lengthened plate, second oil hole is fixed with the oil pipe to be connected
It connects, the hydraulic valve block lengthened plate passes through second oil hole and oil pipe input power liquid；
The hydraulic valve block lengthened plate is fixedly connected with the hydraulic valve block, is fixedly connected on the hydraulic valve block lengthened plate
There is the drag chain；
The side of the hydraulic lock is connect with the side of the hydraulic valve block, the stretching of oil cylinder described in the hydraulic pressure lock control
With retraction；
The other side of the hydraulic lock is connect with the solenoid valve；
The other side of the hydraulic valve block is connect with the input end of the oil cylinder；
The outlet end of the oil cylinder is connect with the support plate；
The pressure switch is fixedly connected with the hydraulic valve block, and the pressure switch controls boosting and the benefit of the oil cylinder
Pressure.
In the schematical embodiment of the application, the valve group selecting unit includes：Holder, crossbeam, guide rail,
Sliding block, driving source and support plate；
The crossbeam is set to the top of the holder；
The top of the crossbeam is mounted with guide rail, and the inside setting of the guide rail is fluted, and the sliding block passes through described recessed
Slot is placed on the guide rail；
The support plate is fixedly connected with the guide rail, and the support plate supports the connection unit；
The driving source is connect with the sliding block, and the driving source drives the sliding block to be moved on the guide rail；
The sliding block is connect with the hydraulic valve block, and the sliding block drives the hydraulic valve block to be moved on the guide rail.
In the schematical embodiment of the application, the injecting valve terminal includes：Main valve, is cut detection valve
Disconnected valve, excessive connector and double ball check valves；
One end of the main valve is fixedly connected with the injecting header unit；
The other end of the main valve is fixedly connected with one end of the detection valve；
The other end of the detection valve is fixedly connected with one end of the block valve, the leakage of the detection valve detection main valve
Situation；
The other end of the block valve is fixedly connected with one end of the excessive connector；
The other end of the excessive connector is fixedly connected with one end of double ball check valves；
The other end of double ball check valves waits for that the well head of injecting is connect with described.
In the schematical embodiment of the application, the injecting header unit includes：Intermediate header, side are converged
Pipe, intermediate seal set and supporting rack；
The intermediate header, which is covered with the side header by the intermediate seal, to be connected；
Support frame as described above and the intermediate header and side header are fixedly connected, and support the intermediate header and side header；
Support frame as described above is fixedly connected with the pedestal.
In the schematical embodiment of the application, the driving source includes：Motor, linear motion module and company
Fishplate bar；
The motor is connect with the linear motion module, and the motor drives the linear motion module to drive the cunning
Block moves on the guide rail；
The connecting plate is fixedly connected with the guide rail, and the linear motion module is fixed on the connecting plate.
In the schematical embodiment of the application, the injecting device further includes：Control unit；
Described control unit is connected with hydraulic pressure supply unit communication, and described control unit controls the hydraulic pressure supply list
The start and stop of member；
Described control unit is connected with valve group selecting unit communication, and it is single that described control unit controls the valve group selection
The operation and stopping of member；
Described control unit is connected with hydraulic control unit communication, and described control unit controls the injecting valve group list
Member is opened and the pressurize and ftercompction of the hydraulic control unit.
The embodiment of the present application also discloses a kind of more well injecting methods, is used for above-mentioned more well injecting devices, including：
A1, the well head for waiting for injecting is connect with the injecting valve terminal, is selected from the well head for waiting for injecting
One is used as target well head, and it is corresponding with the target well head that the valve group selecting unit drives the hydraulic control unit to be moved to
The injecting valve terminal top；
A2, the control hydraulic control unit are connect with the injecting valve terminal；
A3, the hydraulic pressure supply unit are powered liquid to the hydraulic control unit, and the hydraulic control unit is opened
The corresponding injecting valve terminal of the target well head is to realize injecting header unit injecting corresponding with the target well head
Conducting between valve terminal；
A4, by the injecting header unit to the corresponding injecting valve terminal injecting of the target well head；
After the completion of a5, injecting, it is de- to control hydraulic control unit injecting valve terminal corresponding with the target well head
From.
In the schematical embodiment of the application, the method further includes：The well of injecting is waited for described in a6, judgement
Whether mouth is fully completed injecting, if so, the injecting device is closed；If it is not, being then back to step a1.
This application provides a kind of more well injecting device and method, by traditional each individual well injecting pipe-line system and equipment
Sharing, centralization, intelligence, design is simple, easy to operate.Each well head for waiting for injecting only need to be by hydraulic control unit i.e.
It can be filled, without a large amount of injectant pumps, investment can be effectively reduced, save capital.
In addition, each well injecting inlet ductwork system is made of injecting header, the sharing of inlet ductwork is realized, it will be traditional
Pipeline the step of being replaced by injecting header, simplified installation and operating process.
In addition, the main valve of the injecting valve terminal of device provided by the embodiments of the present application can be examined individually in use
Leakage is repaired, and is replaced, and does not influence being normally carried out for other well injectings work.
Finally, injecting device provided by the embodiments of the present application uses integrative design, and volume compact, pipeline connection is simple,
It is a large amount of to save floor space.
Description of the drawings
Fig. 1 is a kind of front view for more well injecting devices that one embodiment of the application provides；
Fig. 2 is a kind of left view for more well injecting devices that one embodiment of the application provides；
Fig. 3 is a kind of structural schematic diagram for more well injecting device hydraulic pressure supply units that one embodiment of the application provides；
Fig. 4 is a kind of structural schematic diagram for more well injecting device hydraulic control units that one embodiment of the application provides；
Fig. 5 is a kind of structural schematic diagram for more well injecting device valve group selecting units that one embodiment of the application provides；
Fig. 6 is injecting valve terminal and injecting header list in a kind of more well injecting devices that one embodiment of the application provides
The artwork of member；
Fig. 7 is a kind of structural schematic diagram for more well injecting device injecting valve terminals that one embodiment of the application provides；
Fig. 8 is a kind of flow chart for more well injecting methods that one embodiment of the application provides.
Reference numeral
1 --- hydraulic pressure supply unit, 2 --- valve group selecting unit；
3 --- hydraulic control unit, 4 --- injecting valve terminal；
5 --- connection unit, 6 --- pedestal；
7 --- injecting header unit, 8 --- control unit；
11 --- fire-proof motor, 12 --- overflow valve；
13 --- hydraulic station, 14 --- hydraulic station stabilizer blade；
15 --- hydraulic station lengthened plate, 16 --- the first oil hole；
21 --- holder, 22 --- crossbeam；
23 --- guide rail, 24 --- sliding block；
25 --- driving source, 26 --- support plate；
31 --- support plate, 32 --- oil cylinder；
33 --- hydraulic valve block, 34 --- hydraulic valve block lengthened plate；
35 --- hydraulic lock, 36 --- solenoid valve；
37 --- the second oil hole, 41 --- main valve；
42 --- detection valve, 43 --- block valve；
44 --- excessive connector, 45 --- double ball check valves；
251 --- motor, 252 --- linear motion module；
253 --- connecting plate.
Specific implementation mode
The specific implementation mode of the application is described below in conjunction with the accompanying drawings.
Herein, "upper", "lower", "front", "rear", "left", "right" etc. are only used for indicating the position between opposite segments
Relationship, and the absolute position of these non-limiting relevant portions.
The embodiment of the present application provides a kind of more well injecting devices, using integrative design, volume compact, each unit it
Between can individually be operated, improve flexibility and the scope of application of device.
Exist to solve the prior art and take up a large area, inconvenient, the technical problems such as pipeline complexity, referring to Fig. 1 and
Fig. 2, the embodiment of the present application disclose a kind of more well injecting devices, including：Hydraulic pressure supply unit 1, valve group selecting unit 2, hydraulic pressure
Control unit 3, injecting valve terminal 4, pedestal 6 and injecting header unit 7；
The hydraulic pressure supply unit 1 is connect with the hydraulic control unit 3, and the hydraulic pressure supply unit 1 is to hydraulic control
Unit 3 is powered liquid；
The hydraulic control unit 3 is moved to and the well head for waiting for injecting under the driving of the valve group selecting unit 2
The top of the corresponding injecting valve terminal 4；
The hydraulic control unit 3 connect or is detached from the injecting valve terminal 4, is turned on and off the injecting valve group
Unit 4；
The injecting header unit 7 is fixedly connected with the injecting valve terminal 4, the injecting valve terminal 4 with it is described
It waits for that the well head of injecting is connected by pipeline, to the well head injecting for waiting for injecting, the well head pair of injecting is wherein waited for described in each
Injecting valve terminal 4 described in answering one group；
The hydraulic pressure supply unit 1, valve group selecting unit 2 and injecting header unit 7 are fixed on the pedestal 6.
The pedestal 6 can select checkered steel plate, material that can select Q235 ordinary carbon steels.
The hydraulic pressure unit 1, valve group selecting unit 2 and injecting header unit 7 can make to be bolted to the pedestal 6
On.
The injecting valve terminal 4 can be bolted with the injecting header unit 7 is fixed on the injecting remittance
On pipe unit 7, it is used to support the injecting valve terminal 4.
In the embodiment of the present application, more well cycle injecting devices further include：Connection unit 5；
The connection unit 5 includes：Oil pipe and drag chain, the oil pipe are fixed on the inside of the drag chain；
The hydraulic control unit 3 is connect with the hydraulic pressure supply unit 1 by the oil pipe and drag chain；
The length of the oil pipe can be selected according to actual needs, not limited herein.
The drag chain can select reinforced bridge-type nylon drag chain, the size of the drag chain and the size of the oil pipe mutually to fit
Match.
Each unit of more well injecting devices provided by the embodiments of the present application uses integrative design, volume compact to reduce
Floor space, the hydraulic pressure supply unit 1, the valve group selecting unit 2 and the injecting header unit 7 are fixed on the pedestal
It is flexibly and easily, applied widely convenient for handling on 6, the injecting of complexity in the prior art is replaced using injecting header unit 7
Pipeline, streamline operation.
Structural reference Fig. 3 of the hydraulic pressure supply unit 1, including：Fire-proof motor 11, overflow valve 12, hydraulic station 13, hydraulic pressure
It stands stabilizer blade 14 and hydraulic station lengthened plate 15；
The hydraulic station 13 is fixed on the top of the hydraulic station stabilizer blade 14；
The fire-proof motor 11 is fixed on the top of the hydraulic station 13, and the fire-proof motor 11 connects with the hydraulic station 13
It connects；
The input terminal of the overflow valve 12 is connect with the hydraulic station 13, the output end of the overflow valve 12 and the hydraulic pressure
Lengthened plate 15 of standing is fixedly connected；
The first oil hole 16, first oil hole 16 and the connection unit are provided on the hydraulic station lengthened plate 15
5 oil pipe is fixedly connected, and the hydraulic station lengthened plate 15 is by first oil hole 16 and oil pipe to the hydraulic control list
Member 3 exports power fluid；
The hydraulic station lengthened plate 15 is fixedly connected with the drag chain.
The hydraulic station 13 includes hydraulic station ontology, oil pump and hydraulic station attachment, and the oil pump is placed in the hydraulic station
In the inner cavity of 13 ontology, the inner cavity of the oil pump and the ontology of the hydraulic station 13 is connected by screw bolts, for exporting power
Liquid.
The fire-proof motor 11 is connect with the oil pump, drives the oil pump.
The size of first oil hole 16 is adapted with the oil pipe of the connection unit 5, first oil hole 16
Size can be processed according to actual needs.
The top for being fixed on the hydraulic station 13 can be bolted in the fire-proof motor 11.
The hydraulic station stabilizer blade 14 can be made according to actual needs, and material can select Q235 ordinary carbon steels,
In the production process, the various pieces of hydraulic station stabilizer blade 14 can be fixed by welding, for carrying institute
State hydraulic station 13.
The hydraulic station 13 can be secured by bolts on the hydraulic station stabilizer blade 14, easy to disassemble.
The overflow valve 12 is placed in the top of the hydraulic station 13, and bolted mode may be used in connection type.
The material of the hydraulic station lengthened plate 15 can select Q235 ordinary carbon steels.
The embodiment of the present application provides a kind of hydraulic pressure supply unit 1 of more well injecting devices, and the hydraulic station 13 is disposed
It is easy to disassemble on the hydraulic station stabilizer blade 14, it is easy to use.Meanwhile by the overflow valve 12, the fire-proof motor 11 and liquid
Pressure station lengthened plate 15 is placed in the top of the hydraulic station 13, simplifies the pipeline of device, reduces the volume of hydraulic station.
The structure of the hydraulic control unit 3 referring to Fig. 4, including：Support plate 31, oil cylinder 32, hydraulic valve block 33, hydraulic valve
Block lengthened plate 34, hydraulic lock 35, solenoid valve 36 and pressure switch 38；
The second oil hole 37 is provided on the hydraulic valve block lengthened plate 34, second oil hole 37 is solid with the oil pipe
Fixed connection, the hydraulic valve block lengthened plate 34 pass through second oil hole 37 and oil pipe input power liquid；
The hydraulic valve block lengthened plate 34 is fixedly connected with the hydraulic valve block 33, solid on the hydraulic valve block lengthened plate 34
Surely it is connected with the drag chain；
The side of the hydraulic lock 35 is connect with the side of the hydraulic valve block 33, and the hydraulic lock 35 controls the oil cylinder
32 stretching and retraction；
The other side of the hydraulic lock 35 is connect with the solenoid valve 36；
The other side of the hydraulic valve block 33 is connect with the input end of the oil cylinder 32；
The outlet end of the oil cylinder 32 is connect with the support plate 31；
The pressure switch 38 is fixedly connected with the hydraulic valve block 33, and the pressure switch 38 controls the oil cylinder 32
Boosting and ftercompction.
The size of second oil hole 37 is adapted with the size of the oil pipe, and the size of second oil hole 37 can
To be processed according to actual needs, it is not specifically limited herein.
The hydraulic valve block lengthened plate 34 and hydraulic valve block 33, the hydraulic valve block 33 and hydraulic lock 35, institute
Stating the connection type of hydraulic lock 35 and the solenoid valve 36 can select to be bolted.
The connection type of the hydraulic valve block 33 and the oil cylinder 32, the oil cylinder 32 and the support plate 31 can select
It is threadedly coupled.
The solenoid valve 36 can select 34 logical explosion-proof solenoid valves.
The material of the support plate 31 can select A276304 stainless steels.
The material of the hydraulic valve block 33 can select Q235 common carbon structural steels.
The hydraulic lock 35 can select Z2S6 type hydraulic locks.
The material of the hydraulic valve block lengthened plate 34 can select Q235 common carbon structural steels.
The connection type of the hydraulic valve block lengthened plate 34 and the hydraulic valve block 33 can select to be bolted.
The hydraulic control unit 3 of more well injecting devices provided by the embodiments of the present application, the hydraulic control unit 3 can lead to
The unlatching of the injecting valve terminal 4 is crossed manually or automatically controls, it is applied widely, it is easy to operate, in actual installation, subtract
Lack installation pipeline, simplifies operating process.
Structural reference Fig. 5 of the valve group selecting unit 2, including：Holder 21, crossbeam 22, guide rail 23, sliding block 24, driving
Source 25 and support plate 26；
The crossbeam 22 is set to the top of the holder 21；
The top of the crossbeam 22 is mounted with guide rail 23, and the inside setting of the guide rail 23 is fluted, and the sliding block 24 is logical
The groove is crossed to be placed on the guide rail 23；
The support plate 26 is fixedly connected with the guide rail 23, and the support plate 26 supports the connection unit 5；
The driving source 25 is connect with the sliding block 24, and the driving source 25 drives the sliding block 24 on the guide rail 23
It is mobile；
The sliding block 24 is connect with the hydraulic valve block 33, and the sliding block 24 drives the hydraulic valve block 33 in the guide rail
It is moved on 23.
The sliding block 24 is adapted with the hydraulic valve block 33 of the hydraulic control unit 3, the sliding block 24 and the hydraulic pressure
Valve block 33 can be split and be fixed as needed by the way of being detachably connected.
Pulley can be provided on the sliding block 24, the sliding block 24 is realized by the pulley and moved in the guide rail 23
It is dynamic, or the coating lubricating oil between the sliding block 24 and the guide rail 23, to reduce frictional resistance.
The connection type of the holder 21 and the crossbeam 22 can select to weld or be bolted, the holder 21
Quantity can be selected as needed.For example, the quantity of the holder 21 can select two, it is welded in the crossbeam 22
The size of both sides, the holder 21 is determined according to the height of the injecting valve terminal 4.
The guide rail 23 can weld or make to be bolted to 22 top of the crossbeam, 23 inside processing of the guide rail
Fluted, the size of the groove is adapted with the sliding block 24.
Sliding block shift fork can be set on the sliding block 24, and the sliding block 24 passes through the sliding block shift fork and the driving source 25
Connection.
The support plate 26 and the connection type of the guide rail 23 can select to be bolted or weld.For example, can be with
Bolted mode is selected, it is easy to disassemble.The material of the support plate 26 can select Q235 common carbon structural steels.
The driving source 25 can be bolted to 23 side of the guide rail, easy to disassemble.
Optionally, the driving source 25 includes：Motor 251, linear motion module 252 and connecting plate 253；
The motor 251 is connect with the linear motion module 252, and the linear motion is driven to the motor 251
Module 252 drives the sliding block 24 to be moved on the guide rail 23；
The connecting plate 253 is fixedly connected with the guide rail 23, and the linear motion module 252 is fixed on the connecting plate
On 253.
Optionally, linear motion module 252 includes：Driving wheel, driven wheel, synchronous belt group and rotary encoder；
The rotary encoder is connect with the motor 251, to control and adjust the rotating cycle of the motor 251；
The driving wheel is placed on the motor 251, and the driving wheel passes through synchronous band connection with the driven wheel.
The valve group selecting unit 2 of more well injecting devices provided by the embodiments of the present application, the valve group selecting unit 2 is on the one hand
The hydraulic control unit 3 is supported, on the other hand the sliding block 24 is connect with the hydraulic control unit 3, the valve group selection
Unit 2 drives the hydraulic control unit 3 to be moved on the guide rail 23 by driving the sliding block 24, and then by the liquid
Pressure control unit 3 is moved to the position to align with injecting valve terminal 4, and the hydraulic control unit 3 is connected to the control
After signal, the movement and disengaging of control cylinder 32 and main valve valve rod turn off or on injecting valve terminal that is described and waiting for injecting
4, injecting is carried out to the well head for waiting for injecting according to actual needs.
Referring to Fig. 6, in the embodiment of the present application, an injecting header unit 7 can be with multiple injecting valve terminals 4
Connection, each described injecting valve terminal 4 waits for that the well head of injecting is corresponding with one, realization to multiple well heads for waiting for injecting into
Row injecting.
Structural reference Fig. 7 of the injecting valve terminal 4, including：Main valve 41, block valve 43, excessively connects main valve detection 42
First 44, double ball check valves 45；
One end of the main valve 41 is fixedly connected with the injecting header unit 7；
The other end of the main valve 41 is fixedly connected with one end of the detection valve 42；
The other end of the detection valve 42 is fixedly connected with one end of the block valve 43, and the detection valve 42 detects main valve
41 leakage situation；
The other end of the block valve 43 is fixedly connected with one end of the excessive connector 44；
The other end of the excessive connector 44 is fixedly connected with one end of double ball check valves 45；
The other end of double ball check valves 45 waits for that the well head of injecting is connect with described.
The main valve 41 can select to be bolted with the injecting header unit 7, the detection valve 42.
The block valve 43 can select to be bolted with the detection valve 42, the excessive connector 44.
The excessive connector 44 can select to be threadedly coupled with double ball check valves 45.
In the present embodiment, the quantity of the main valve 41 can be one or more main valves 41, for example, can select by 1
~48 independent main valves 41 form side by side, and the quantity of the main valve 41 can be determined according to well number.
Austenitic steel may be used in the main valve 41 or other erosion resistants are made, and the main valve 41 is self-sealing structure.
Each main valve 41 works independently from each other, and is independent of each other, and when any one main valve 41 needs replacing, does not influence other main valves
41 work.
The main valve 41 uses self-sealing structure, and each main valve of the main valve 41 is when carrying out injecting, the main valve 41
It can manually or automatically open, after injecting, the main valve 41 automatically resets, and realizes and is closed.
In the present embodiment, it each waits for that the well head of injecting corresponds to a main valve 41, is opened using external force, self-return closes
It closes, simplifies operating process, while can prevent injecting from entering the gas well pipeline for not needing injecting.
In the present embodiment, the detection valve 42 can be made of 1~48 independent detection valve 42, the detection valve 42
It is bolted to connection with the main valve 41, the quantity of the detection valve 42 is adapted with the quantity of the main valve 41.
The detection valve 42 is made of austenitic steel or other erosion resistants, can be sealed using plug.
In this embodiment, the detection valve 42 is for detecting 41 leakage situation of main valve, can to each main valve 41 individually into
Row leak detection does not influence the injecting of other well heads for waiting for injecting when replacing this valve group or valve group main valve.
In the present embodiment, the quantity of the block valve 43 can be one or more, for example, the number of the block valve 43
Amount can select 1~48, and the quantity of the block valve 43 is adapted with the quantity of the main valve 41.
The block valve 43 is made of austenitic steel or other special erosion resistants.The block valve 43 opens and closes torque
It is small, it opens flexible；In the closed state, can completely cut off pipeline upstream and downstream medium, main valve 41 is conveniently replaceable, with double ball check valves
Medium is flow backwards in 45 common prevention gas wells.
In the present embodiment, the excessive connector 44 can be made of one or more excessively connectors, for example, described excessive
The quantity of connector 44 can be 1~48, and the quantity of the excessive connector 44 is adapted with the quantity of the main valve 41, the mistake
Degree connector 44 is connect with the block valve 43.
In the present embodiment, double ball check valves 45 can be made of one or more double ball check valves 45, for example, institute
The quantity for stating double ball check valves 45 can be 1~48.In actual use, the quantity of double ball check valves 45 is according to
The quantity of main valve 41 determines.
Double ball check valves 45 are made of austenitic steel or other erosion resistants.Double ball check valves 45 use two
The dual non-return sealing structure of road steel ball and conical surface seal face composition, can effectively anti-medium refluence.The twice steel ball and the conical surface
Sealing surface uses special superpressed method, ensures that double ball check valves 45 have longer service life.
The inlet and outlet of double ball check valves 45 are connected using taper thread, and connection simple seal is reliable.
In this embodiment, can have equipped with double ball check valves 45 between every group of block valve 43 and the well head suction line for waiting for injecting
Effect prevents from waiting for that medium is flow backwards in the well head pipeline of injecting, it is ensured that the safety of injecting suction line.
The injecting valve terminal 4 of more well injecting devices provided by the embodiments of the present application, the injecting valve terminal 4 it is each
Independently of each other, each main valve 41 works independently, and when some main valve 41 needs replacing, does not influence the use of other valves for part,
Simplify installation procedure, reduces installation cost.
Optionally, the injecting header unit 7 includes：Intermediate header, side header, intermediate seal set and supporting rack；
The intermediate header, which is covered with the side header by the intermediate seal, to be connected；
Support frame as described above and the intermediate header and side header are fixedly connected, and support the intermediate header and side header；
Support frame as described above is fixedly connected with the pedestal 6.
The injecting header is fixedly connected with support frame as described above, and support frame as described above is fixed on the pedestal 6, to support
The injecting valve terminal 4 is completed to each well head injecting for waiting for injecting.
Optionally, more well injecting devices further include：Control unit 8；
Described control unit 8 is connected with the communication of the hydraulic pressure supply unit 1, controls the startup of the hydraulic pressure supply unit 1
With stopping；
Described control unit 8 is connected with the valve group selecting unit 2 communication, controls the operation of the valve group selecting unit 2
And stopping；
The communication of described control unit 8 and the hydraulic control unit 3 connects, control the injecting valve terminal 4 open with
And the pressurize and ftercompction of the hydraulic control unit 3.
Described control unit 8 can be explosion-proof control box, and in the present embodiment, the explosion-proof control box can be according to reality
It needs to be installed at injecting scene, manual control is replaced by described control unit, realize automation control, operating procedure letter
Singly, conveniently, applied widely.
With wait for injecting well head quantity be three, respectively for No.1 well head, No. two well heads and No. three well heads to this
The injecting flow of more well injecting devices that application embodiment provides illustrates, in the present embodiment, the sequence of the injecting according to
Secondary is No.1 well head, No. two well heads and No. three well heads, and the injecting flow of more well injecting devices provided by the embodiments of the present application is as follows：
Described control unit 8 is received to described after three well heads of injecting carry out the instruction of injecting, sends control letter
Number to the valve group selecting unit 2 motor 251, the driving linear motion module 252 of the motor 251 moves, straight line fortune
Dynamic model group 252 drives the sliding block 24 to be moved on the guide rail 23, when the sliding block 24 is moved to corresponding to No.1 well head
After injecting valve terminal 4, described control unit 8 sends a control signal to the hydraulic pressure supply unit 1, the hydraulic pressure supply unit
1 is powered liquid, the hydraulic control unit 3 and the No.1 well by the connection unit 5 to the hydraulic control unit 3
The main valve 41 in injecting valve terminal 4 corresponding to mouthful docks, and the hydraulic control unit 3 is opened right with No.1 well head institute
Main valve 41 in the injecting valve terminal 4 answered, then by the import of injecting header unit 7 to the corresponding note of the No.1 well head
Agent valve terminal 4 carries out injecting, followed by main valve 41, detection valve 42, block valve 43, excessive connector 44 and double ball check valves
45, into the injecting pipeline of No.1 well head.
After the completion of No.1 well head injecting, described control unit 8 sends a control signal to the hydraulic control unit 3 and institute
Hydraulic pressure supply unit 1 is stated, after the hydraulic control unit 3 resets, the hydraulic pressure supply unit 1 is closed, and described control unit 8 is sent out
Send control signal to the valve group selecting unit 2, the valve group selecting unit 2 drives the hydraulic control unit 3 and described one
The position of the main valve 41 of injecting valve terminal 4 corresponding to number well head is separated.Later successively to No. two well heads and No. three
Well head carries out injecting, and specific injecting process is similar with No.1 well head, and details are not described herein again, when completion waits for injecting to all three
After well head injecting, cycle filling is closed or restarted to the injecting device.
More well injecting devices provided by the embodiments of the present application may be implemented that, to multiple wells successively injecting, pipeline can be simplified,
It is conveniently operated, the mounting process requirement of the device is as follows：
(1) the present embodiment more well injecting devices be arranged the facilities such as operating platform and guardrail, convenient for equipment operation, maintenance and
It safeguards.
(2) distribution of more well injecting devices of the present embodiment and control all by the explosion-proof power distribution cabinet that is arranged on the spot, prevent
Quick-fried PLC control cabinet is completed, and coherent signal is uploaded to middle control machine, is arranged in Central Control Room.
In addition, skid pattern, using flexible, floor space may be used in more well injecting devices provided by the embodiments of the present application
It is small.
Apply for more well injecting devices that embodiment provides, it is first, injecting header unit 7 is integrated, on the one hand reduce
On the other hand number of lines can control the injecting of multiple wells by hydraulic control unit 3, easy to operate, applied widely；Its
Secondary, hydraulic pressure supply unit 1, injecting header unit 7 and the valve group selecting unit 2 of more well injecting devices are fixed on pedestal 6,
Floor space is reduced, operating cost is reduced；It finally, can be by disposing control unit 8, described in artificial intelligence control
Hydraulic control unit 3 opens main valve 41, reduces manual operation, reduces cost of labor.
A kind of more well injecting methods that the embodiment of the present application also provides are used for above-mentioned more well injecting devices, packet referring to Fig. 8
It includes：
A1, the well head for waiting for injecting is connect with the injecting valve terminal 4, is selected from the well head for waiting for injecting
One is used as target well head, the valve group selecting unit 2 that the hydraulic control unit 3 is driven to be moved to and the target well head pair
The top for the injecting valve terminal 4 answered；
A2, the control hydraulic control unit 3 are connect with the injecting valve terminal 4；
A3, the hydraulic pressure supply unit 1 are powered liquid to the hydraulic control unit 3, and the hydraulic control unit 3 is beaten
The corresponding injecting valve terminal of the target well head 4 is opened to realize that the injecting header unit 7 is corresponding with the target well head
Conducting between injecting valve terminal 4；
A4, by the injecting header unit 7 to corresponding 4 injecting of injecting valve terminal of the target well head；
After the completion of a5, injecting, corresponding with the target well head injecting valve terminal of the hydraulic control unit 34 is controlled
It is detached from.
Optionally, the method further includes：
Wait for whether the well head of injecting is fully completed injecting described in a6, judgement, if so, the injecting device is closed；If it is not,
Then it is back to step a1.
In the present embodiment, the injecting device can wait for the well head of injecting with automatic cycle injecting or arbitrary selection, if
After the completion of the injecting of one group of well head, it can return to step a1 and continue to fill or be automatically closed, after receiving instruction again, restart
The filling of a new round.
Above-mentioned steps can also realize control, the control by manually controlling by installing control unit 8
Unit 8 can be explosion proof control case.The specific control function of explosion proof control case is as follows：
(1) movement and stopping of the sliding block 24 on guide rail 23 are controlled；
(2) unlatching, closing and the working time of the solenoid valve 36 are controlled；
(3) start and stop of the hydraulic pressure supply unit 1 are controlled；
(4) stretching and retraction for controlling the oil cylinder 32, to control the open and close of the main valve 41；
(5) start and stop that the hydraulic control unit 3 is controlled according to the pressure switch 38 are opened in the main valve 41
Qi Shi keeps 32 operating pressure of the oil cylinder constant；
(6) injection length of each well is set；
(7) the cycle injection of the well head of injecting is waited for described in control；
(8) there is remote control function.
More well injecting methods provided by the embodiments of the present application, each operating process can be completed by artificial intelligence, be avoided
Error caused by manual operation improves well head injecting efficiency and safety, applied widely, easy to operate, passes through the valve
Group selection unit 2 drives the hydraulic control unit 3 to be described to wait for corresponding 4 position pair of injecting valve terminal of the well head of injecting
In or be detached from, control to the injectings of multiple well heads.
The application preferred embodiment and embodiment are explained in detail above in conjunction with attached drawing, but the application
The above-described embodiment and examples are not limited to, within the knowledge of those skilled in the art, can also not taken off
It is made a variety of changes under the premise of conceiving from the application.
Claims (11)
1. a kind of more well injecting devices, which is characterized in that including：Hydraulic pressure supply unit (1), valve group selecting unit (2), hydraulic pressure control
Unit (3), injecting valve terminal (4), pedestal (6) and injecting header unit (7) processed；
The hydraulic pressure supply unit (1) connect with the hydraulic control unit (3), and the hydraulic pressure supply unit (1) is to the liquid
Pressure control unit (3) is powered liquid；
The hydraulic control unit (3) is moved to corresponding with the well head of injecting is waited under the driving of the valve group selecting unit (2)
The injecting valve terminal (4) top；
The hydraulic control unit (3) connect or is detached from the injecting valve terminal (4), is turned on and off the injecting valve group
Unit (4)；
The injecting header unit (7) is fixedly connected with the injecting valve terminal (4), the injecting valve terminal (4) and institute
It states and waits for that the well head of injecting is connected by pipeline, to the well head injecting for waiting for injecting, the well head of injecting is wherein waited for described in each
Injecting valve terminal (4) described in one group corresponding；
The hydraulic pressure supply unit (1), valve group selecting unit (2) and injecting header unit (7) are fixed on the pedestal (6).
2. the apparatus according to claim 1, which is characterized in that further include：Connection unit (5)；
The connection unit (5) includes：Oil pipe and drag chain, the oil pipe are fixed on the inside of the drag chain；
The hydraulic pressure supply unit (1) is connect with the hydraulic control unit (3) by the oil pipe and drag chain.
3. the apparatus of claim 2, which is characterized in that the hydraulic pressure supply unit (1) includes：Fire-proof motor
(11), overflow valve (12), hydraulic station (13), hydraulic station stabilizer blade (14) and hydraulic station lengthened plate (15)；
The hydraulic station (13) is fixed on the top of the hydraulic station stabilizer blade (14)；
The fire-proof motor (11) is fixed on the top of the hydraulic station (13), the fire-proof motor (11) and the hydraulic station
(13) it connects；
The input terminal of the overflow valve (12) is connect with the hydraulic station (13), output end and the liquid of the overflow valve (12)
Pressure station lengthened plate (15) is fixedly connected；
The first oil hole (16) is provided on the hydraulic station lengthened plate (15), first oil hole (16) is single with the connection
The oil pipe of first (5) is fixedly connected, and the hydraulic station lengthened plate (15) is by first oil hole (16) and oil pipe to the liquid
Control unit (3) is pressed to export power fluid；
The hydraulic station lengthened plate (15) is fixedly connected with the drag chain.
4. the apparatus of claim 2, which is characterized in that the hydraulic control unit (3) includes：Support plate (31),
Oil cylinder (32), hydraulic valve block (33), hydraulic valve block lengthened plate (34), hydraulic lock (35), solenoid valve (36) and pressure switch (38)；
The second oil hole (37), second oil hole (37) and the oil pipe are provided on the hydraulic valve block lengthened plate (34)
It is fixedly connected, the hydraulic valve block lengthened plate (34) passes through second oil hole (37) and oil pipe input power liquid；
The hydraulic valve block lengthened plate (34) is fixedly connected with the hydraulic valve block (33), on the hydraulic valve block lengthened plate (34)
It is fixedly connected with the drag chain；
The side of the hydraulic lock (35) is connect with the side of the hydraulic valve block (33), and the hydraulic lock (35) controls the oil
The stretching and retraction of cylinder (32)；
The other side of the hydraulic lock (35) is connect with the solenoid valve (36)；
The other side of the hydraulic valve block (33) is connect with the input end of the oil cylinder (32)；
The outlet end of the oil cylinder (32) is connect with the support plate (31)；
The pressure switch (38) is fixedly connected with the hydraulic valve block (33), and the pressure switch (38) controls the oil cylinder
(32) boosting and ftercompction.
5. device according to claim 4, which is characterized in that the valve group selecting unit (2) includes：Holder (21), cross
Beam (22), guide rail (23), sliding block (24), driving source (25) and support plate (26)；
The crossbeam (22) is set to the top of the holder (21)；
The top of the crossbeam (22) is mounted with guide rail (23), and fluted, the sliding block is arranged in the inside of the guide rail (23)
(24) it is placed on the guide rail (23) by the groove；
The support plate (26) is fixedly connected with the guide rail (23), and the support plate (26) supports the connection unit (5)；
The driving source (25) connect with the sliding block (24), and the driving source (25) drives the sliding block (24) in the guide rail
(23) it is moved on；
The sliding block (24) connect with the hydraulic valve block (33), and the sliding block (24) drives the hydraulic valve block (33) described
Guide rail moves on (23).
6. device according to claim 4, which is characterized in that the injecting valve terminal (4) includes：Main valve (41), inspection
Side valve (42), block valve (43), excessive connector (44) and double ball check valves (45)；
One end of the main valve (41) is fixedly connected with the injecting header unit (7)；
The other end of the main valve (41) is fixedly connected with one end of the detection valve (42)；
The other end of the detection valve (42) is fixedly connected with one end of the block valve (43), detection valve (42) the detection master
The leakage situation of valve (41)；
The other end of the block valve (43) is fixedly connected with one end of the excessive connector (44)；
The other end of the excessive connector (44) is fixedly connected with one end of double ball check valves (45)；
The other end of double ball check valves (45) waits for that the well head of injecting is connect with described.
7. the apparatus according to claim 1, which is characterized in that the injecting header unit (7) includes：Intermediate header, side
Header, intermediate seal set and supporting rack；
The intermediate header, which is covered with the side header by the intermediate seal, to be connected；
Support frame as described above and the intermediate header and side header are fixedly connected, and support frame as described above supports the intermediate header and side to converge
Pipe；
Support frame as described above is fixedly connected with the pedestal.
8. device according to claim 5, which is characterized in that the driving source (25) includes：Motor (251), straight line fortune
Dynamic model group (252) and connecting plate (253)；
The motor (251) connect with the linear motion module (252), and the motor (251) drives the linear motion mould
Group (252) drives the sliding block (24) to be moved on the guide rail (23)；
The connecting plate (253) is fixedly connected with the guide rail (23), and the linear motion module (252) is fixed on the connection
On plate (253).
9. the apparatus according to claim 1, which is characterized in that further include：Control unit (8)；
Described control unit (8) is connected with the hydraulic pressure supply unit (1) communication, and described control unit (8) controls the hydraulic pressure
The start and stop of feed unit (1)；
Described control unit (8) is connected with the valve group selecting unit (2) communication, and described control unit (8) controls the valve group
The operation and stopping of selecting unit (2)；
Described control unit (8) is connected with the hydraulic control unit (3) communication, and described control unit (8) controls the injecting
Valve terminal (4) is opened and the pressurize and ftercompction of the hydraulic control unit (3).
10. a kind of more well injecting methods, which is characterized in that be used for the more well injecting devices of claim 1-9 any one of them, packet
It includes：
A1, the well head for waiting for injecting is connect with the injecting valve terminal (4), one is selected from the well head for waiting for injecting
It is a to be used as target well head, the valve group selecting unit (2) that the hydraulic control unit (3) is driven to be moved to and the target well head
The top of the corresponding injecting valve terminal (4)；
A2, the control hydraulic control unit (3) connect with the injecting valve terminal (4)；
A3, the hydraulic pressure supply unit (1) are powered liquid, the hydraulic control unit (3) to the hydraulic control unit (3)
The corresponding injecting valve terminal (4) of the target well head is opened to realize the injecting header unit (7) and the target well head
Conducting between corresponding injecting valve terminal (4)；
A4, by the injecting header unit (7) to corresponding injecting valve terminal (4) injecting of the target well head；
After the completion of a5, injecting, the hydraulic control unit (3) injecting valve terminal (4) corresponding with the target well head is controlled
It is detached from.
11. according to the method described in claim 10, it is characterized in that, further including：
Wait for whether the well head of injecting is fully completed injecting described in a6, judgement, if so, the injecting device is closed；If it is not, then returning
It is back to step a1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159262.0A CN108343411B (en) | 2018-02-26 | 2018-02-26 | Multi-well injection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159262.0A CN108343411B (en) | 2018-02-26 | 2018-02-26 | Multi-well injection device and method |
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| Publication Number | Publication Date |
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| CN108343411A true CN108343411A (en) | 2018-07-31 |
| CN108343411B CN108343411B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810159262.0A Active CN108343411B (en) | 2018-02-26 | 2018-02-26 | Multi-well injection device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627775A (en) * | 2020-11-24 | 2021-04-09 | 中国石油天然气股份有限公司 | Cluster oil well multi-wellhead wheel-patrol drip-type injection system and method |
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| CN108343411B (en) | 2020-04-03 |
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Denomination of invention: A multi well agent injection device and method Effective date of registration: 20200826 Granted publication date: 20200403 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI AEROSPACE DELIN SCIENCE AND TECHNOLOGY GROUP Co.,Ltd. Registration number: Y2020610000133 |
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