CN110761757A - Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity - Google Patents
Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity Download PDFInfo
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- CN110761757A CN110761757A CN201911197892.8A CN201911197892A CN110761757A CN 110761757 A CN110761757 A CN 110761757A CN 201911197892 A CN201911197892 A CN 201911197892A CN 110761757 A CN110761757 A CN 110761757A
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- adjusting device
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 238000002347 injection Methods 0.000 title claims abstract description 118
- 239000007924 injection Substances 0.000 title claims abstract description 118
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 8
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- E21B43/20—Displacing by water
-
- 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
- E21B43/14—Obtaining from a multiple-zone well
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a multi-pipe type high-efficiency stratified water injection adjusting device capable of balancing water injection quantity, and mainly relates to the technical field of oil fields. The water injection pipe comprises a water injection outer pipe, the bottom of the water injection outer pipe is provided with a joint, the bottom of the joint is provided with a central pipe, a plurality of rubber cylinders are arranged on the central pipe from top to bottom, an annular water injector is arranged between every two adjacent rubber cylinders, a water injection pipeline communicated with the annular water injector is arranged in the central pipe, a liquid inlet pipe is arranged in the central pipe, the top end of the liquid inlet pipe is provided with a one-way valve, a connecting pipe matched with the rubber cylinders is arranged on the outer wall of the liquid inlet pipe, and the bottom of a pressure pipe is provided. The invention has the beneficial effects that: the pressure of a rubber tube can be guaranteed, the rubber tube is convenient to relieve pressure and take out of the well conveniently, maintenance is convenient, water injection can be reduced for erosion of the well wall at each layer of multi-angle water injection, the verticality of a water injection device is guaranteed, and the layering effect is guaranteed.
Description
Technical Field
The invention relates to the technical field of oil fields, in particular to a multi-pipe type balanced water injection quantity efficient separate-layer water injection adjusting device.
Background
The water injection well is used for injecting water into oil layers so as to supplement and maintain the pressure of the oil layers, and the oil layers have great difference among layers, planes and layers, so that the water injection of the oil field mostly adopts a layered water injection mode, the further excavation and submergence of a thin difference layer and a thick oil layer are realized through the adjustment of an interlayer structure and an inner layer structure, and the water injection wave spread coefficient is improved. However, the water injection quantity of each oil layer is distributed by a water distributor in the existing stratified water injection, the water injection process is divided into two steps of measurement and adjustment and water injection, the water injection operation is complex and time-consuming, the operation and test cost is high, the problems of blockage, blockage or incapability of putting and pulling a water nozzle frequently occur in the allocation process, the test efficiency is low, the packer adopted by some existing water injection devices capable of directly measuring and adjusting the water injection quantity on the ground needs to be continuously applied with high pressure, the pipeline is greatly damaged, the water injection direction of each stratum is single, the erosion on the well wall is serious, and the problem that the water injection device is inclined and the stratification of the packer is influenced exists.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a multi-pipe type high-efficiency layered water injection adjusting device capable of adjusting the water injection amount directly on the ground, which can ensure the pressure of a rubber cylinder, is convenient for pressure relief of the rubber cylinder, is convenient to take out from a well and convenient to maintain, can reduce erosion to the well wall by injecting water at multiple angles in each layer, ensures the verticality of a water injection device, and ensures the layered effect.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the multi-tube type high-efficiency stratified water injection adjusting device with balanced water injection amount comprises a water injection outer tube, wherein a joint is arranged at the bottom of the water injection outer tube, a central tube is arranged at the bottom of the joint, a plurality of rubber cylinders are arranged on the central tube from top to bottom, an annular water injector is arranged between every two adjacent rubber cylinders, the annular water injector is sleeved on the central tube and fixedly connected with the central tube, a water injection pipeline communicated with the annular water injector is arranged in the central tube, the top end of the water injection pipeline is positioned in the joint, a water injection inner tube matched with the water injection pipeline is arranged in the water injection outer tube, a plurality of water injection ports are arrayed on the outer wall of the annular water injector, a liquid inlet tube is arranged in the central tube, a one-way valve is arranged at the top end of the liquid inlet tube, the one-way valve is positioned in the joint, a pressurizing tube communicated with the one, the connecting pipe passes in the inner chamber that the outer wall of center tube inserted the packing element, the bottom of forcing pipe is equipped with pressure relief device, the vertical hole that feeds through forcing pipe and center tube is equipped with among the pressure relief device, the middle part in vertical hole is equipped with the horizontal hole, just horizontal hole and vertical hole intercommunication, be equipped with the chock that is used for sealing vertical hole in the horizontal hole, chock and horizontal hole sliding connection, one side of chock is equipped with the spring, vertically in the horizontal hole be equipped with the mount pad that suits with the spring, the one end and the chock fixed connection of spring, the other end and mount pad fixed connection, the one end that the mount pad was kept away from in the horizontal hole is equipped with the fluid-discharge tube, the top of fluid-discharge tube is located the joint, be equipped with the pressure relief pipe that suits with the fluid-discharge tube in the water injection outer tube.
And the water injection outer pipe is filled with an elastic shaping object.
The water injection inner pipe takes the axis of the water injection outer pipe as the center, and is arranged in the water injection inner pipe in an annular array mode.
And protective layers are arranged on the pressure pipe and the pressure relief pipe.
The top of the end, far away from the spring, of the chock is provided with an inclined plane, and the height of the end, close to the spring, of the inclined plane is higher than that of the end, far away from the spring, of the inclined plane.
A righting support is arranged in the joint.
Compared with the prior art, the invention has the beneficial effects that:
the invention divides the water injection well into a plurality of layers by utilizing the rubber cylinders, each layer is provided with an annular water injector, each annular water injector is provided with a corresponding water injection inner pipe, the ground end of each water injection inner pipe is provided with a water injection valve, the water injection amount can be adjusted through the water injection valve, the annular water injectors are convenient and efficient, the water in the annular water injectors is discharged through a plurality of water injection ports, the erosion to the well wall is reduced, the plurality of water injection ports are annularly arranged in an array manner, the reverse impact force borne by the annular water injectors can be ensured to be in a balanced state, the integral verticality of the water injection device can be ensured, the layering effect is ensured, high-pressure oil can be injected into the rubber cylinders through the pressurizing pipes, the outer walls of the rubber cylinders are abutted against the well wall, the sealing is completed, the one-way valves ensure that the high-pressure oil can only enter the liquid inlet pipe through the pressurizing pipes and can not reversely flow, the, when the rubber cylinder is disassembled, high-pressure liquid is introduced into the horizontal hole through the liquid discharge pipe, the spring is compressed, the plug blocks are separated from the vertical hole, the vertical hole is communicated up and down, high-pressure oil in the rubber cylinder can be discharged through the vertical hole, the outer wall of the rubber cylinder is separated from the well wall, the rubber cylinder can be taken out of the well, and the rubber cylinder is convenient to maintain.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the pressure relief device.
The reference numbers in the drawings: 1. a water injection outer pipe; 2. a joint; 3. a central tube; 4. a rubber cylinder; 5. an annular water injector; 6. a water injection pipeline; 7. a water injection inner pipe; 8. a water injection port; 9. a liquid inlet pipe; 10. a one-way valve; 11. a pressurizing pipe; 12. a connecting pipe; 13. a pressure relief device; 14. a vertical hole; 15. a horizontal hole; 16. a chock block; 17. a spring; 18. a mounting seat; 19. a liquid discharge pipe; 20. a pressure relief pipe; 21. an elastic shaped article; 22. and (5) righting the bracket.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
The invention relates to a multi-pipe type high-efficiency stratified water injection adjusting device capable of balancing water injection quantity, which comprises a composite material water injection outer pipe 1, wherein the bottom of the water injection outer pipe 1 is provided with a connector 2, the connector 2 is a flange connector, and the water injection outer pipe 1 can be connected with the connector 2 through a hoop. The bottom that connects 2 is equipped with center tube 3, check valve, stopper pipe, plug are installed down in proper order to the bottom of center tube 3, the welding of the top of center tube 3 has the flange who suits with connecting 2, and flange passes through the screw and is connected with connecting 2. A plurality of rubber cylinders 4 are arranged on the central tube 3 from top to bottom, the number of the rubber cylinders 4 is determined according to the layering requirement, and the number of the rubber cylinders 4 is + 1. An annular water injector 5 is arranged between two adjacent rubber cylinders 4, the annular water injector 5 is sleeved on the central tube 3 and is welded, sealed and fixed, and the number of the annular water injectors 5 is the same as the number of the layering layers of the water injection well. The water injection device is characterized in that a water injection pipeline 6 communicated with the annular water injectors 5 is arranged in the central pipe 3, the number of the water injection pipelines 6 is the same as that of the annular water injectors 5, the top ends of the water injection pipelines 6 are located in the joint 2, and the bottom ends of the water injection pipelines pass through the outer wall of the central pipe 3 and are communicated with the annular water injectors 5. Be equipped with the water injection inner tube 7 that suits with water injection pipeline 6 in the water injection outer tube 1, water injection inner tube 7 and 6 one-to-one of water injection pipeline, water injection inner tube 7 is located the one end installation water injection valve on ground, can adjust convenient high-efficient to the water injection volume through the water injection valve. The axial lead that uses annular water injector 5 on the outer wall of annular water injector 5 is equipped with a plurality of water filling port 8 as central annular array, and water in the annular water injector 5 discharges through a plurality of water filling port 8, can reduce the erosion to the wall of a well, and 8 annular arrays of a plurality of water filling port arrange, can guarantee that the reverse impact force that annular water injector 5 bore is in balanced state, can guarantee the holistic straightness that hangs down of water injection device, guarantee the layering effect. The central tube 3 is internally provided with a liquid inlet tube 9, the top end of the liquid inlet tube 9 is provided with a one-way valve 10, the one-way valve 10 is positioned in the joint 2, the water injection outer tube 1 is internally provided with a pressurizing tube 11 communicated with the one-way valve 10, and the mounting direction of the one-way valve 10 is used for ensuring that high-pressure oil can only enter the liquid inlet tube 9 through the pressurizing tube 11 and can not reversely flow. Be equipped with the connecting pipe 12 that suits with packing element 4 on the outer wall of feed liquor pipe 9, connecting pipe 12 passes the outer wall of center tube 3 and inserts in the inner chamber of packing element 4, and the inner chamber of packing element 4 passes through connecting pipe 12 and feed liquor pipe 9 intercommunication, can pour into high pressure oil into packing element 4 through forcing pipe 11 for the outer wall and the wall of a well butt of packing element 4 accomplish the packing, and check valve 10 can guarantee that the high pressure oil in packing element 4 is in high pressure state all the time, guarantees to pack and separates the effect. The bottom of forcing pipe 11 is equipped with pressure relief device 13, and pressure relief device 13 passes through the screw fixation on the inner wall of centre bore 3, vertically be equipped with the vertical hole 14 of intercommunication forcing pipe 11 and centre tube 3 among the pressure relief device 13, the middle part of vertical hole 14 is equipped with horizontal hole 15, just horizontal hole 15 and vertical hole 14 intercommunication, the internal diameter of horizontal hole 15 is greater than the internal diameter of vertical hole 14, be equipped with the chock 16 that is used for sealing vertical hole 14 in the horizontal hole 15, chock 16 is used for shutoff vertical hole 14. The plug 16 is slidably connected with the horizontal hole 15, the plug 16 can slide in the horizontal hole 15, and the vertical hole 14 can be closed or opened by adjusting the position of the plug 16. A spring 17 is horizontally arranged on one side of the plug 16, a mounting seat 18 which is adaptive to the spring 17 is vertically arranged in the horizontal hole 15, a mounting hole which is adaptive to the mounting seat 18 is arranged on the outer wall of the central tube 3, the mounting seat 18 is in threaded connection with the mounting hole, one end of the spring 17 is welded on the plug 16, the other end of the spring 17 is welded on the mounting seat 18, a liquid discharge tube 19 is arranged on one end of the horizontal hole 15 which is far away from the mounting seat 18, the top end of the liquid discharge tube 19 is positioned in the joint 2, a pressure discharge tube 20 which is adaptive to the liquid discharge tube 19 is arranged in the water injection outer tube 1, the plug 16 seals the vertical hole 14 when the spring 17 is in a natural state, when the invention is disassembled, high-pressure liquid is introduced into the horizontal hole 15 through the liquid discharge tube 19, the spring 17 is compressed, the plug 16 is separated from the vertical hole 14, the vertical hole 14 is vertically communicated, and the high-pressure, the outer wall of the rubber cylinder 4 is separated from the well wall, so that the rubber cylinder can be taken out of the well, and the maintenance is convenient.
Furthermore, in order to prevent the pipelines in the outer water injection pipe from being abraded due to mutual friction, the outer water injection pipe 1 is filled with an elastic shaped object 21, and the elastic shaped object 21 can separate the pressure relief pipe 20, the pressure pipe 11 and the inner water injection pipe 7 in the outer water injection pipe 1 to prevent the different pipelines from being rubbed with each other.
Further, in order to improve the bearing capacity of the water injection outer pipe, the water injection inner pipe 7 is arranged in the water injection inner pipe 7 in an annular array with the axis of the water injection outer pipe 1 as the center.
Furthermore, in order to guarantee the service life of the pressure pipe and the pressure relief pipe, the protective layers are wrapped on the pressure pipe 11 and the pressure relief pipe 20, so that the pressure pipe 11 and the pressure relief pipe 20 can be prevented from leaking, and the service life is guaranteed.
Furthermore, in order to facilitate the penetration of the vertical hole, an inclined plane is arranged at the top of one end of the plug 16, which is far away from the spring 17, and the height of one end of the inclined plane, which is close to the spring 17, is higher than that of one end of the inclined plane, which is far away from the spring, so that when high-pressure liquid is introduced into the horizontal hole 15 through the liquid discharge pipe 19, as shown in fig. 2, the plug 16 moves rightwards, and when the inclined plane moves into the vertical hole 14, high-pressure oil in the rubber cylinder 4 pushes the inclined plane downwards, and a rightward thrust is generated on the plug 16, so that the rightward movement of the plug 16 can be accelerated, and the.
Furthermore, in order to facilitate the connection of pipelines in the joint, a righting bracket 22 is installed in the joint 2, the righting bracket 22 is in threaded connection with the joint 2, and the righting bracket 22 is provided with a plug hole which is matched with the water injection pipeline 6, the one-way valve 10 and the liquid discharge pipe 19.
Claims (6)
1. High-efficient layering water injection adjusting device of multitube balanced water injection volume, including water injection outer tube (1), the bottom of water injection outer tube (1) is equipped with joint (2), its characterized in that: the bottom of the joint (2) is provided with a central tube (3), the central tube (3) is provided with a plurality of rubber cylinders (4) from top to bottom, an annular water injector (5) is arranged between every two adjacent rubber cylinders (4), the annular water injector (5) is sleeved on the central tube (3) and is fixedly connected with the central tube (3), a water injection pipeline (6) communicated with the annular water injector (5) is arranged in the central tube (3), the top end of the water injection pipeline (6) is positioned in the joint (2), a water injection inner tube (7) matched with the water injection pipeline (6) is arranged in the water injection outer tube (1), a plurality of water injection ports (8) are arranged on the outer wall of the annular water injector (5) in an array manner, a liquid inlet tube (9) is arranged in the central tube (3), the top end of the liquid inlet tube (9) is provided with a one-way valve (10), and the one-way valve (, the water injection device is characterized in that a pressure pipe (11) communicated with a one-way valve (10) is arranged in the water injection outer pipe (1), a connecting pipe (12) matched with the rubber sleeve (4) is arranged on the outer wall of the liquid inlet pipe (9), the connecting pipe (12) penetrates through the outer wall of the central pipe (3) and is inserted into the inner cavity of the rubber sleeve (4), a pressure relief device (13) is arranged at the bottom of the pressure pipe (11), a vertical hole (14) communicated with the pressure pipe (11) and the central pipe (3) is vertically arranged in the pressure relief device (13), a horizontal hole (15) is arranged in the middle of the vertical hole (14), a plug block (16) used for sealing the vertical hole (14) is arranged in the horizontal hole (15), the plug block (16) is connected with the horizontal hole (15) in a sliding mode, a spring (17) is arranged on one side of the plug block (16), and a mounting seat (18) matched with the spring (17) is vertically arranged in the horizontal hole (15), one end of the spring (17) is fixedly connected with the plug block (16), the other end of the spring is fixedly connected with the mounting seat (18), a liquid discharge pipe (19) is arranged at one end, far away from the mounting seat (18), of the horizontal hole (15), the top end of the liquid discharge pipe (19) is located in the joint (2), and a pressure relief pipe (20) matched with the liquid discharge pipe (19) is arranged in the water injection outer pipe (1).
2. The multi-pipe type balanced water injection quantity efficient separate-layer water injection adjusting device according to claim 1, characterized in that: and the water injection outer pipe (1) is filled with an elastic shaped object (21).
3. The multi-pipe type balanced water injection quantity efficient separate-layer water injection adjusting device according to claim 1, characterized in that: the water injection inner pipe (7) is arranged in the water injection inner pipe (7) in an annular array by taking the axis of the water injection outer pipe (1) as the center.
4. The multi-pipe type balanced water injection quantity efficient separate-layer water injection adjusting device according to claim 1, characterized in that: protective layers are arranged on the pressurizing pipe (11) and the pressure relief pipe (20).
5. The multi-pipe type balanced water injection quantity efficient separate-layer water injection adjusting device according to claim 1, characterized in that: the top of one end, far away from the spring (17), of the chock (16) is provided with an inclined plane, and the height of one end, close to the spring (17), of the inclined plane is higher than that of one end, far away from the spring, of the inclined plane.
6. The multi-pipe type balanced water injection quantity efficient separate-layer water injection adjusting device according to claim 1, characterized in that: a righting support (22) is arranged in the joint (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197892.8A CN110761757B (en) | 2019-11-29 | 2019-11-29 | Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197892.8A CN110761757B (en) | 2019-11-29 | 2019-11-29 | Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity |
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| Publication Number | Publication Date |
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| CN110761757A true CN110761757A (en) | 2020-02-07 |
| CN110761757B CN110761757B (en) | 2021-08-06 |
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| CN201911197892.8A Expired - Fee Related CN110761757B (en) | 2019-11-29 | 2019-11-29 | Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity |
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