CN215907817U - Pressure drive valve device capable of realizing multi-layer pressure drive water injection - Google Patents
Pressure drive valve device capable of realizing multi-layer pressure drive water injection Download PDFInfo
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- CN215907817U CN215907817U CN202122374824.3U CN202122374824U CN215907817U CN 215907817 U CN215907817 U CN 215907817U CN 202122374824 U CN202122374824 U CN 202122374824U CN 215907817 U CN215907817 U CN 215907817U
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Abstract
The utility model relates to a pressure drive valve device capable of realizing multi-layer pressure drive water injection. The technical scheme is as follows: the pressure by a set of more than pressure drives the valve and concatenates and form, in each group pressure drives the valve, is equipped with the inner tube in the upper portion inboard of outer tube, is equipped with the spring between inner tube and the outer tube, the lower extreme and the differential pressure valve contact of spring, the balanced valve is connected to the lower extreme of differential pressure valve, the inboard and the connecting pipe cooperation of balanced valve, the lower extreme at the inner tube is installed to the connecting pipe, the lower extreme and the sliding sleeve of connecting pipe are connected, the lower extreme inner wall of sliding sleeve be equipped with down the control ball seat, go out the liquid hole in being equipped with on the lateral wall of sliding sleeve, the downside outer wall of outer tube is equipped with out the liquid hole. The beneficial effects are that: the utility model can realize the multi-layer-section layered pressure flooding process technology, can greatly realize the pressure flooding water injection effect on low-permeability and ultra-low-permeability oil reservoirs, better realize balanced displacement water injection, and has the advantages of simple field implementation, strong operability and high safety.
Description
Technical Field
The utility model relates to the technical field of oil exploitation, in particular to a pressure drive valve device capable of realizing multi-layer pressure drive water injection.
Background
In the development of low-permeability oil reservoirs and ultra-low-permeability oil reservoirs, due to the poor physical properties of the reservoirs, the development problems of 'no injection and no extraction', fast decrement of the productivity of an oil well and the like generally exist, so that the oil reservoirs cannot be used economically and effectively for a long time. At present, the acidification and injection-increasing technology used has the defects of water and soil inadequacy, short effective period, high cost and unsatisfactory effect on the oil reservoirs. Through large displacement and high pressure, fracturing and crack formation, temperature-sensitive crack induction and pore throat increase are carried out, large amount of water is injected by a short-term continuous pump, and a pressure-drive water injection process test of closing a well, closing a well and dispersing pressure is used for providing effective displacement energy for an oil well corresponding to a well group, so that a good development effect is achieved for developing the oil reservoir. However, the pressure flooding water injection technology is still in the primary stage of a mine field test, the underground injection technology can realize cage integrated injection pressure flooding and two-layer layered pressure flooding at present, the requirements of more-layer layered balanced pressure flooding water injection and oil flooding are difficult to meet, meanwhile, the existing two-layer layered pressure flooding water injection needs to open and close an injection valve by putting a corresponding opening and closing tool into a steel wire, and for low-permeability oil reservoirs of the type, the steel wire operation construction difficulty is large and the risk is high generally under the condition of high pressure of a deep well.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a pressure drive valve device capable of realizing multi-layer pressure drive water injection.
The utility model provides a pressure drive valve device capable of realizing multi-layer pressure drive water injection, which has the technical scheme that: the pressure-driven valve is formed by connecting more than one group in series, each group comprises an upper joint (1), an outer pipe (2), a spring (3), an inner pipe (4), a differential pressure valve (5), a connecting pipe (7), a balance valve (8), an elastic clamping claw (9), a sliding sleeve (10) and a lower joint (11), the upper end of the outer pipe (2) is connected with the upper joint (1), the lower end of the outer pipe (2) is connected with the lower joint (11), the inner pipe (4) is arranged on the inner side of the upper part of the outer pipe (2), the spring (3) is arranged between the inner pipe (4) and the outer pipe (2), the lower end of the spring (3) is in contact with the upper end of the differential pressure valve (5), the balance valve (8) is connected with the lower end of the differential pressure valve (5), the inner side of the balance valve (8) is matched with the connecting pipe (7), the connecting pipe (7) is arranged at the lower end of the inner pipe (4), and the lower end of the connecting pipe (7) is connected with the sliding sleeve (10), a lower control ball seat is arranged on the inner wall of the lower end of the sliding sleeve (10), an inner liquid outlet hole (10-1) is formed in the side wall of the sliding sleeve (10), and an outer liquid outlet hole (2-2) is formed in the outer wall of the lower side of the outer pipe (2); after the lower control ball (12) is thrown into the lower control ball seat, the sliding sleeve (10) drives the connecting pipe (7), the balance valve (8) and the differential pressure valve (5) to move downwards, the spring (3) is compressed, and after an inner liquid outlet hole (10-1) of the sliding sleeve (10) corresponds to an outer liquid outlet hole (2-2) of the outer pipe (2), liquid is sprayed out to the corresponding oil layer to be pressurized.
Preferably, a pressure transmission hole (4-1) is formed in the lower side of the inner pipe (4), an upper ball seat (6) is arranged at the bottom of an inner cavity of the inner pipe (4), and an outer protruding ring is arranged on the outer wall of the lower end of the inner pipe (4) and used for being matched with the upper end of the differential pressure valve (5); the middle part of the outer pipe (2) is provided with a pressure relief hole (2-1).
Preferably, the upper end of the differential pressure valve (5) is provided with an inner convex ring which is matched with an outer convex ring at the lower end of the inner pipe (4), and the lower end of the differential pressure valve (5) is connected with the external thread of the balance valve (8) through internal threads;
preferably, sealing rings are arranged between the inner convex ring and the outer wall of the inner pipe (4), between the inner convex ring and the inner wall of the outer pipe (2), between the inner wall of the differential pressure valve (5) and the outer wall of the outer convex ring of the inner pipe (4), and between the inner wall of the balance valve (8) and the outer wall of the connecting pipe (7).
Preferably, the pressure transmission hole (4-1) is arranged on an outer convex ring at the lower end of the inner pipe (4).
Preferably, the upper end of the connecting pipe (7) is provided with an outer raised step which is matched with a balance valve (8) connected with the lower end of the differential pressure valve (5); the lower end of the connecting pipe (7) is movably connected with the upper end of the sliding sleeve (10).
Preferably, the outer wall of the upper side of the sliding sleeve (10) is connected with an elastic clamping claw (9), the upper end of the elastic clamping claw (9) is in fit contact with a groove in the inner wall of the outer tube (2), when the control ball (12) is put into operation, the sliding sleeve (10) drives the elastic clamping claw (9) to move downwards under the liquid pressure, and when the sliding sleeve is reset, the upper end of the elastic clamping claw (9) and the inner wall of the outer tube (2) are reset to the groove for fixing the sliding sleeve (10).
The utility model has the beneficial effects that:
(1) the utility model is connected in series with a plurality of groups, can realize the layered pressure flooding process technology of a plurality of layers, can greatly realize the pressure flooding water injection effect of low-permeability and ultra-low-permeability oil reservoirs, and better realize balanced displacement water injection;
(2) when each layer section is used, after the lower control ball is thrown into the lower control ball seat, liquid is sprayed and injected into the corresponding oil layer on the outer side; when the water injection amount of the corresponding oil layer reaches the designed water injection amount, closing of an internal and external communication channel of the pressure drive valve is realized by putting an upper control ball on an upper ball seat at the lower end of the inner wall of the inner pipe;
(3) the control ball is a soluble ball, so that the opening and closing working states of the underground pressure drive valve can be conveniently controlled, and the underground pressure drive valve is simple to implement on site, strong in operability and high in safety.
Drawings
FIG. 1 is a schematic view of the overall connection of the present invention;
FIG. 2 is a schematic diagram of a set of differential pressure valves;
FIG. 3 is a schematic diagram of the overall structure of a set of differential pressure valves with control balls in service;
FIG. 4 is a schematic structural diagram of a set of differential pressure valves, after being pressurized, a pressure driving valve is opened to inject water;
FIG. 5 is a schematic diagram of the overall structure of a set of differential pressure valves on the input control ball;
FIG. 6 is a schematic diagram of a set of differential pressure valves with the pressure actuated valves closed after being actuated;
FIG. 7 is a schematic diagram of the overall structure of a set of pressure difference valves after the upper and lower control spheres are dissolved;
in the upper diagram: the device comprises a first differential pressure valve a, a second differential pressure valve b, a third differential pressure valve c, an upper joint 1, an outer pipe 2, a spring 3, an inner pipe 4, a differential pressure valve 5, an upper ball seat 6, a connecting pipe 7, a balance valve 8, an elastic clamping claw 9, a sliding sleeve 10, a lower joint 11, a lower control ball 12, an upper control ball 13, a pressure relief hole 2-1, a liquid outlet hole 2-2, a pressure transmission hole 4-1 and an inner liquid outlet hole 10-1.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Embodiment 1, referring to fig. 1, the pressure-actuated valve device capable of realizing multi-layer pressure-actuated water injection according to the present invention is formed by connecting more than one group of pressure-actuated valves in series, each group of pressure-actuated valves includes an upper connector 1, an outer tube 2, a spring 3, an inner tube 4, a pressure-differential valve 5, a connecting tube 7, a balance valve 8, an elastic clamping claw 9, a sliding sleeve 10, and a lower connector 11, the upper end of the outer tube 2 is connected to the upper connector 1, the lower end of the outer tube 2 is connected to the lower connector 11, the inner tube 4 is disposed inside the upper portion of the outer tube 2, the spring 3 is disposed between the inner tube 4 and the outer tube 2, the lower end of the spring 3 contacts with the upper end of the pressure-differential valve 5, the lower end of the pressure-differential valve 5 is connected to the balance valve 8, the inner side of the balance valve 8 is matched to the connecting tube 7, the connecting tube 7 is mounted at the lower end of the inner tube 4, the lower end of the connecting tube 7 is connected to the sliding sleeve 10, the lower end of the sliding sleeve 10 is provided with a lower control ball seat, the side wall of the sliding sleeve 10 is provided with an inner liquid outlet hole 10-1, the outer wall of the lower side of the outer pipe 2 is provided with a liquid outlet hole 2-2; after the lower control ball 12 is thrown into the lower control ball seat, the sliding sleeve 10 drives the connecting pipe 7, the balance valve 8 and the differential pressure valve 5 to move downwards, the spring 3 is compressed, and after the inner liquid outlet hole 10-1 of the sliding sleeve 10 corresponds to the outer liquid outlet hole 2-2 of the outer pipe 2, liquid is sprayed out to the corresponding oil layer to realize pressure applying.
Wherein, the lower side of the inner tube 4 is provided with a pressure transmission hole 4-1, the bottom of the inner cavity of the inner tube 4 is provided with an upper ball seat 6, and the outer wall of the lower end of the inner tube 4 is provided with an outer convex ring which is used for matching with the upper end of a differential pressure valve 5; the middle part of the outer tube 2 is provided with a pressure relief hole 2-1. The upper end of the differential pressure valve 5 is provided with an inner convex ring which is matched with an outer convex ring at the lower end of the inner pipe 4, and the lower end of the differential pressure valve 5 is connected with the external thread of the balance valve 8 through an internal thread;
and sealing rings are arranged between the inner convex ring and the outer wall of the inner pipe 4, between the inner convex ring and the inner wall of the outer pipe 2, between the inner wall of the differential pressure valve 5 and the outer wall of the outer convex ring of the inner pipe 4, and between the inner wall of the balance valve 8 and the outer wall of the connecting pipe 7.
Further, the pressure transfer hole 4-1 is arranged on an outer convex ring at the lower end of the inner tube 4; the upper end of the connecting pipe 7 is provided with an outer raised step which is matched with a balance valve 8 connected with the lower end of the differential pressure valve 5; the lower end of the connecting pipe 7 is movably connected with the upper end of the sliding sleeve 10.
In addition, the upper outer wall of the sliding sleeve 10 is connected with an elastic clamping claw 9, the upper end of the elastic clamping claw 9 is in fit contact with a groove on the inner wall of the outer tube 2, when the control ball 12 is put in, the sliding sleeve 10 drives the elastic clamping claw 9 to move downwards under the liquid pressure, and when the sliding sleeve is reset, the upper end of the elastic clamping claw 9 and the inner wall of the outer tube 2 reset to the groove, so that the sliding sleeve 10 is fixed.
It should be noted that: the lower control sphere 12 and the upper control sphere 13 are used to be soluble in water, and thus, will not be described in detail since they are conventional techniques well known to those skilled in the art. The lower control sphere 12 and the upper control sphere 13 dissolve and disappear after exceeding the designed dissolving time in water.
The utility model provides a use method of a pressure drive valve device capable of realizing multi-layer pressure drive water injection, which comprises the following steps:
(1) connecting a plurality of pressure drive valves in series through oil pipes, arranging the inner diameters of the ball seats and the sliding sleeves corresponding to the upper, middle and lower layers at intervals according to a certain size from large to small, and adjusting the sizes of the corresponding upper and lower control balls; on the basis of the layering of the packer, the layering pressure drive water injection of more than multiple layers of intervals can be realized through the pressure drive valve combination;
(2) opening and water injection of each group of pressure driving valves:
a lower control ball 12 is thrown in from an upper joint 1 of a group of pressure driving valves, the lower control ball 12 is seated on a lower control ball seat in a sliding sleeve 10 under the action of gravity, the upper joint 1 is used for hydraulic pressure to press, the sliding sleeve 10 descends under the action of hydraulic pressure, and meanwhile, an elastic clamping claw 9 and a connecting pipe 7 are driven to descend; meanwhile, an inner liquid outlet hole 10-1 on the sliding sleeve 10 is aligned with an outer liquid outlet hole 2-2 on the outer pipe, so that the communication from the inside of the pressure drive valve to the outside of the pressure drive valve is realized, and further, the large-discharge, high-pressure and no-throttling water injection of the corresponding oil layer is realized;
(3) closing the pressure driving valve:
when the water injection amount of the corresponding oil layer reaches the designed water injection amount, an upper control ball 13 is put in, the upper control ball 13 is settled on an upper ball seat 6 at the lower end of the inner wall of an inner pipe 4 under the action of gravity, liquid is pressurized through an upper connector 1 and is sprayed out through a pressure transfer hole 4-1, a pressure difference valve 5 is driven to compress a spring 3 to move upwards under the action of hydraulic pressure, then the lower end of the pressure difference valve 5 drives a balance valve 8, a connecting pipe 7, an elastic beam claw 9 and a sliding sleeve 10 to move upwards, an inner liquid outlet hole 10-1 on the sliding sleeve 10 is staggered with an outer liquid outlet hole 2-2 on an outer pipe 2, and the closing of an inner and outer communication channel of the pressure drive valve is realized; meanwhile, the elastic clamping claw 9 returns to the groove position of the inner wall of the outer tube 2 to play a role of fixing the sliding sleeve; after the pressure is released through a pressure release hole 2-1 of the outer tube 2, the pressure difference valve 5, the connecting tube 7 and the balance valve 8 are pushed to move downwards under the action of the spring 3, and the original positions of all parts are restored; wherein, the adopted lower control ball 12 and the upper control ball 13 can dissolve and disappear after exceeding the designed dissolving time in water;
(4) repeated opening and closing of pressure driving valve
And (3) repeating the steps (2) and (3), so that the functions of repeatedly opening, filling water and closing the seal of the pressure drive valve can be realized.
In embodiment 2, the pressure drive valve device capable of realizing multi-layer pressure drive water injection provided by the utility model adopts a series combination of 3 pressure drive valves, so that the liquid of 3 oil layers can be respectively injected.
The method comprises the following steps: the pressure-driven valve comprises a first pressure-difference valve a, a second pressure-difference valve b and a third pressure-difference valve c which are sequentially connected in series, each group of pressure-driven valves comprises an upper joint 1, an outer pipe 2, a spring 3, an inner pipe 4, a pressure-difference valve 5, a connecting pipe 7, a balance valve 8, an elastic clamping claw 9, a sliding sleeve 10 and a lower joint 11, the upper end of the outer pipe 2 is connected with the upper joint 1, the lower end of the outer pipe 2 is connected with the lower joint 11, the inner pipe 4 is arranged on the inner side of the upper part of the outer pipe 2, the spring 3 is arranged between the inner pipe 4 and the outer pipe 2, the lower end of the spring 3 is contacted with the upper end of the pressure-difference valve 5, the lower end of the pressure-difference valve 5 is connected with the balance valve 8, the inner side of the balance valve 8 is matched with the connecting pipe 7, the connecting pipe 7 is arranged at the lower end of the inner pipe 4, the lower end of the connecting pipe 7 is connected with the sliding sleeve 10, the inner wall of the lower end of the sliding sleeve 10 is provided with a lower control ball seat, the side wall of the sliding sleeve 10 is provided with an inner liquid outlet hole 10-1, the outer wall of the lower side of the outer pipe 2 is provided with a liquid outlet hole 2-2; after the lower control ball 12 is thrown into the lower control ball seat, the sliding sleeve 10 drives the connecting pipe 7, the balance valve 8 and the differential pressure valve 5 to move downwards, the spring 3 is compressed, and after the inner liquid outlet hole 10-1 of the sliding sleeve 10 corresponds to the outer liquid outlet hole 2-2 of the outer pipe 2, liquid is sprayed out to the corresponding oil layer to realize pressure applying.
When in use, 3 pressure drive valves are connected in series through an oil pipe, the inner diameters of the ball seats and the sliding sleeves corresponding to the upper layer, the middle layer and the lower layer are arranged at intervals according to a certain size from large to small, and the sizes of the corresponding upper control ball and the corresponding lower control ball are adjusted at the same time; on the basis of packer layering, the pressure drive valve combination can realize layering pressure drive water injection of more than 3 layers of intervals.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, the technical solution according to the present invention is subject to corresponding simple modifications or equivalent changes, as far as the scope of the present invention is claimed.
Claims (7)
1. The utility model provides a can realize that many layers press pressure of flooding water to drive valve gear, characterized by: the pressure-driven valve is formed by connecting more than one group in series, each group of pressure-driven valves comprises an upper joint (1), an outer pipe (2), a spring (3), an inner pipe (4), a differential pressure valve (5), a connecting pipe (7), a balance valve (8), an elastic clamping claw (9), a sliding sleeve (10) and a lower joint (11), the upper end of the outer pipe (2) is connected with the upper joint (1), the lower end of the outer pipe (2) is connected with the lower joint (11), the inner pipe (4) is arranged on the inner side of the upper part of the outer pipe (2), the spring (3) is arranged between the inner pipe (4) and the outer pipe (2), the lower end of the spring (3) is in contact with the upper end of the differential pressure valve (5), the lower end of the differential pressure valve (5) is connected with the balance valve (8), the inner side of the balance valve (8) is matched with the connecting pipe (7), the connecting pipe (7) is arranged at the lower end of the inner pipe (4), and the lower end of the connecting pipe (7) is connected with the sliding sleeve (10), the lower end inner wall of the sliding sleeve (10) is provided with a lower control ball seat, the side wall of the sliding sleeve (10) is provided with an inner liquid outlet hole (10-1), and the lower side outer wall of the outer tube (2) is provided with an outer liquid outlet hole (2-2).
2. A pressure-actuated valve device capable of realizing multi-layer pressure-actuated water injection according to claim 1, wherein: a pressure transmission hole (4-1) is formed in the lower side of the inner pipe (4), an upper ball seat (6) is arranged at the bottom of an inner cavity of the inner pipe (4), and an outer protruding ring is arranged on the outer wall of the lower end of the inner pipe (4) and used for being matched with the upper end of a differential pressure valve (5); the middle part of the outer pipe (2) is provided with a pressure relief hole (2-1).
3. A pressure-actuated valve device capable of realizing multi-layer pressure-actuated water injection according to claim 2, wherein: the upper end of the differential pressure valve (5) is provided with an inner convex ring which is matched with an outer convex ring at the lower end of the inner pipe (4), and the lower end of the differential pressure valve (5) is connected with the external thread of the balance valve (8) through an internal thread.
4. A pressure-actuated valve device capable of realizing multi-layer pressure-actuated water injection according to claim 3, wherein: sealing rings are arranged between the inner convex ring and the outer wall of the inner pipe (4), between the inner convex ring and the inner wall of the outer pipe (2), between the inner wall of the differential pressure valve (5) and the outer wall of the outer convex ring of the inner pipe (4) and between the inner wall of the balance valve (8) and the outer wall of the connecting pipe (7).
5. A pressure drive valve device capable of realizing multi-layer pressure drive water injection according to claim 4, which is characterized in that: the pressure transfer hole (4-1) is arranged on an outer convex ring at the lower end of the inner pipe (4).
6. A pressure-actuated valve device capable of realizing multi-layer pressure-actuated water injection according to claim 3, wherein: the upper end of the connecting pipe (7) is provided with an outer raised step which is matched with a balance valve (8) connected with the lower end of the differential pressure valve (5); the lower end of the connecting pipe (7) is movably connected with the upper end of the sliding sleeve (10).
7. A pressure-actuated valve device capable of realizing multi-layer pressure-actuated water injection according to claim 6, wherein: the upper side outer wall of the sliding sleeve (10) is connected with an elastic clamping claw (9), the upper end of the elastic clamping claw (9) is in fit contact with a groove in the inner wall of the outer tube (2), the sliding sleeve (10) drives the elastic clamping claw (9) to move downwards under the liquid pressure when the control ball (12) is put in, and when the sliding sleeve is reset, the upper end of the elastic clamping claw (9) and the inner wall of the outer tube (2) are reset to the groove for fixing the sliding sleeve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374824.3U CN215907817U (en) | 2021-09-29 | 2021-09-29 | Pressure drive valve device capable of realizing multi-layer pressure drive water injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374824.3U CN215907817U (en) | 2021-09-29 | 2021-09-29 | Pressure drive valve device capable of realizing multi-layer pressure drive water injection |
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| Publication Number | Publication Date |
|---|---|
| CN215907817U true CN215907817U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122374824.3U Active CN215907817U (en) | 2021-09-29 | 2021-09-29 | Pressure drive valve device capable of realizing multi-layer pressure drive water injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215907817U (en) |
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2021
- 2021-09-29 CN CN202122374824.3U patent/CN215907817U/en active Active
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