CN216811624U - Pressure-bearing sealing device for oil-water well - Google Patents
Pressure-bearing sealing device for oil-water well Download PDFInfo
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- CN216811624U CN216811624U CN202123298712.0U CN202123298712U CN216811624U CN 216811624 U CN216811624 U CN 216811624U CN 202123298712 U CN202123298712 U CN 202123298712U CN 216811624 U CN216811624 U CN 216811624U
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Abstract
The utility model discloses a pressure-bearing sealing device for an oil-water well, which comprises: the three-way joint, the emptying valve, the second double-male short circuit and the detection sealing assembly; a first interface of the three-way joint is in sealing connection with a casing of a wellhead of the oil production well through threads, a second interface of the three-way joint is in sealing connection with one end of a second double-male short joint through threads, and a third interface of the three-way joint is detachably connected with the detection sealing assembly and is in sealing connection with the detection sealing assembly; the other end of the second double male short circuit is in sealing connection with the emptying valve through threads. The oil-water well pressure-bearing sealing device can seal and plug the simple oil production well when the water injection well injects water to the simple oil production well on the same layer, the three-way joint is in threaded connection and sealing connection with the second double-male short joint and is in detachable connection and sealing connection with the detection sealing assembly, the connection reliability of all the connection parts is high, the safety and the sealing performance are improved, and the emptying valve is installed on the second double-male short joint, so that the emptying operation can be conveniently carried out.
Description
Technical Field
The utility model belongs to the technical field of simple oil production well head equipment, and particularly relates to a pressure-bearing sealing device for an oil-water well.
Background
At present, shallow oil production wells almost all adopt simple well heads and have simple structures. At the site of oil recovery, a plurality of simple oil wells (called satellite wells) are usually opened to perform oil recovery operations. Oilfield flooding is one of the important means for supplementing energy to the stratum and improving the oil field recovery ratio in the oilfield development process. In the process of oil field development, water is injected into an oil reservoir through a special water injection well, and the reservoir pressure stored in the oil reservoir is maintained or recovered.
In the well site of the satellite well, the water injection well is usually arranged at a central position close to the range enclosed by all the satellite wells, and the water injection well performs water injection on the satellite wells needing water injection in the same layer. Before water injection, the well mouth of the satellite well needing water injection needs to be sealed, and exploitation is continued after the water injection is completed. In the prior art, a sealing device for sealing a wellhead of a satellite well is of a welded assembly structure, and although the structure is simple and the cost is low, the sealing performance and the safety reliability are poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a pressure-bearing sealing device for an oil-water well. The technical problem to be solved by the utility model is realized by the following technical scheme:
a pressure-bearing sealing device for oil-water wells comprises: the three-way joint, the emptying valve, the second double-male short circuit and the detection sealing assembly;
the first interface of the three-way joint is in threaded sealing connection with a casing of a wellhead of an oil production well, the second interface of the three-way joint is in threaded sealing connection with one end of the second double male short joint, and the third interface of the three-way joint is detachably connected with the detection sealing assembly and is in sealing connection with the detection sealing assembly;
the other end of the second double male short circuit is connected with the emptying valve in a sealing mode through threads.
In one embodiment of the present invention, the test seal assembly comprises: the first double-male short circuit, the safety valve, the pressure gauge and the stop valve;
the third interface is detachably connected and hermetically connected with one end of the safety valve through the first double-male short circuit;
one end of the first double-male short circuit is connected with the third interface in a sealing mode through threads, and the other end of the first double-male short circuit is connected with one end of the safety valve in a sealing mode through threads;
the other end of the safety valve is hermetically connected with the stop valve;
the stop valve is connected with the pressure gauge.
In one embodiment of the utility model, the other end of the safety valve is connected with the stop valve in a sealing way through a conversion joint;
the other end of the safety valve is hermetically connected with one end of the adapter through threads;
the other end of the adapter is connected with the stop valve in a sealing mode through threads.
In one embodiment of the present invention, the test seal assembly comprises: a safety valve, a pressure gauge and a stop valve;
flanges are arranged at two ends of the safety valve, and the third interface is detachably and fixedly connected with the flange at one end of the safety valve and is in sealing connection through a sealing gasket ring;
the stop valve is connected with a flange at the other end of the safety valve;
the stop valve is connected with the pressure gauge.
In one embodiment of the utility model, the flange at the other end of the safety valve is connected with the stop valve in a sealing way through a threaded flange and a conversion joint;
the flange at the other end of the safety valve is hermetically connected with the screw thread flange, and the screw thread flange is hermetically connected with one end of the adapter through threads; the other end of the adapter is in sealing connection with the stop valve through threads.
In one embodiment of the present invention, the test seal assembly comprises: sealing the flange;
the sealing flange is detachably connected and hermetically connected with the third interface;
a stop valve is arranged on the tee joint;
the stop valve is connected with the pressure gauge.
In one embodiment of the utility model, the outer wall of the three-way joint is provided with a knocking part.
In one embodiment of the utility model, the safety valve and the vent valve are both manual flat valves or manual wedge valves or ball valves.
The utility model has the beneficial effects that:
the oil-water well pressure-bearing sealing device can seal and plug the simple oil production well when the water injection well injects water to the simple oil production well on the same layer, the three-way joint is in threaded connection and sealing connection with the second double-male short joint and is in detachable connection and sealing connection with the detection sealing assembly, the connection reliability of all the connection parts is high, the safety and the sealing performance are improved, and the emptying valve is installed on the second double-male short joint, so that the emptying operation can be conveniently carried out.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural diagram of a pressure-bearing sealing device for an oil-water well according to an embodiment of the present invention;
FIG. 2 is a view from A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of another oil-water well pressure-bearing sealing device provided by the embodiment of the utility model;
fig. 4 is a schematic structural diagram of another oil-water well pressure-bearing sealing device provided by an embodiment of the utility model.
Description of reference numerals:
10-a three-way joint; 11-a knocking portion; 12-a first double short; 13-a first interface; 20-a blow-down valve; 30-a safety valve; 41-a flange; 42-a threaded flange; 50-sealing gasket ring; 60-pressure gauge; 70-a stop valve; 80-a second double common short; 90-a crossover joint; 100-detecting a seal assembly; 101-sealing flange; 102-short-circuit of casing; 103-metal sealing grommet.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example one
Referring to fig. 1, a pressure-bearing sealing device for an oil-water well includes: the three-way joint 10, the vent valve 20, the second double male short circuit 80 and the detection sealing assembly 100; the first interface 13 of three way connection 10 and the sleeve pipe of oil recovery well head pass through threaded connection and form sealing connection through this screw thread, and the second interface of three way connection 10 and the one end of second double male short circuit 80 pass through screw thread sealing connection, and the third interface of three way connection 10 can dismantle with detection seal assembly 100 and be connected and sealing connection. The other end of the second double male short circuit 80 is connected with the emptying valve 20 in a sealing mode through threads.
In this embodiment, the atmospheric valve 20 is used for carrying out the operation of unloading when need emptying in the oil recovery well, open atmospheric valve 20 and can carry out the operation of unloading, close the atmospheric valve 20 after the operation is accomplished can, compare in the operation of unloading of plug end cap, the operation of unloading is more convenient, and simultaneously, atmospheric valve 20 passes through screw thread and the two short circuit 80 threaded connection of second, the two short circuit 80 of second passes through screw thread and three way connection 10 sealing connection, three way connection 10's third interface can dismantle with detection seal assembly 100 and be connected and sealing connection, it is safer to compare in welded connected mode, the sealing device's of this embodiment leakproofness preferred. The test seal assembly 100 is removably attached to the three-way fitting 10 for ease of disassembly, assembly and maintenance. Two ends of the second double male short circuit 80 are respectively in threaded connection and sealing connection with the second interface and the emptying valve 20, so that the sealing performance, the safety and the reliability of the sealing device are improved.
In this embodiment, the water injection well performs water injection on the same underground stratum of all oil production wells requiring water injection on the same layer, before performing water injection on the same layer in the water injection well, the wellhead oil transportation devices of all simple oil production wells (satellite wells) communicated with the water injection well are detached, then the sealing device is installed on the wellhead, the first connector 13 of the three-way connector 10 is connected with the casing through the thread, the air release valve 20 is closed, and then the water injection operation is started. The sealing device can prevent the liquid in the simple oil extraction well from flowing out of the oil extraction well to cause environmental pollution during water injection. In the process of water injection on the same layer, when the pressure value is smaller after water injection of all the oil production wells for a period of time, the pressure in the oil production wells is smaller, and the pressure in the same layer of the oil production wells is balanced, which indicates that all the oil production wells can continue oil production operation, at this time, the vent valve 20 is opened, the pressure-bearing sealing device of the oil-water well is detached, and the wellhead oil transportation device is installed to continue oil production operation.
The threads on the first interface 13 of the three-way joint 10 are taper threads matched with the sleeve taper threads, and the threads of the second double-male short joint 80 are matched with the threads of the second interface of the three-way joint 10 and the threads of the blow-down valve 20 and are both oil pipe taper thread structures.
Preferably, the sealing device of the present invention is adapted for use in a flowing well.
Example two
As shown in fig. 3, the present embodiment further defines a detection sealing assembly 100 on the basis of the first embodiment, which includes: a relief valve 30, a pressure gauge 60 and a shut-off valve 70. Both ends of the relief valve 30 are provided with flanges 41, and the third port of the three-way joint 10 is connected with the flange 41 of one end of the relief valve 30. The flange 41 at one end of the relief valve 30 is also sealingly connected to the third port of the three-way joint 10 via a gasket ring 50. The shut-off valve 70 is provided on the flange 41 at the other end of the relief valve 30. The flange 41 at the other end of the relief valve 30 is also provided with a gasket ring 50 for sealing. Wherein the gasket ring 50 is a metal sealing ring. In this embodiment, the two ends of the safety valve 30 are flange structures, the flange 41 at one end is connected with the third interface of the three-way joint 10 through the flange structure and is sealed by metal through the sealing gasket ring 50, and the flange 41 at the other end is connected with the stop valve 70 and is connected in a sealing manner through the flange structure, so that the sealing performance of the sealing device is further improved, the structure is compact, and the reliability is high. The stop valve 70 is connected to a pressure gauge 60. The stop valve 70 can play the guard action to the manometer 60, avoids the manometer 60 unexpected damage under the great condition of pressure, if the stop valve 70 damages, can also protect the manometer 60 through closing the relief valve 30, can maintain after closing the relief valve 30 and change stop valve 70 and manometer 60.
In this embodiment, the water injection well performs water injection on the same underground stratum of all oil production wells requiring water injection on the same layer, before performing water injection on the same layer in the water injection well, the wellhead oil transportation devices of all simple oil production wells (satellite wells) communicated with the water injection well are detached, then the sealing device is installed on the wellhead, the first connector 13 of the three-way connector 10 is connected with the casing pipe through threads, the safety valve 30 is opened, the air release valve 20 is closed, and then the water injection operation is started. The sealing device can prevent the liquid in the simple oil extraction well from flowing out of the oil extraction well to cause environmental pollution during water injection. In the same-layer water injection process, the pressure change in each simple oil production well can be checked by observing the pressure gauge 60, and when the pressure value is observed to be abnormal, relevant measures can be taken in time, so that sudden accident safety accidents are avoided, and the safety is further improved. Meanwhile, in the same-layer water injection process, when the pressure value of the pressure gauge 60 of all the oil production wells is close to 0, the pressure in the oil production wells is low, the pressure in the same layer of the oil production wells is balanced, the oil production wells can continue to perform oil production operation at the moment, the vent valve 20 is opened, the oil-water well pressure-bearing sealing device is detached, the wellhead oil conveying device is installed, the oil production operation can continue to perform the oil production operation, the water injection condition of the oil production wells can be judged by observing the pressure gauge 60, the subsequent oil production operation is facilitated, and the convenience of the simple oil production well operation is improved.
Wherein, the flange 41 is provided with a sealing gasket ring groove, and the third interface end face of the three-way joint 10 is provided with a sealing gasket ring groove which is consistent with the sealing gasket ring groove shape of the flange 41 end face of one end of the safety valve 30.
Further, as shown in fig. 3, the flange 41 at the other end of the relief valve 30 is sealingly connected to the shut-off valve 70 via a threaded flange 42 and a crossover joint 90. The flange 41 at the other end of the relief valve 30 is sealingly connected to the threaded flange 42, and the threaded flange 42 is also sealingly connected to one end of the adapter 90 by means of threads. The flange 41 and the threaded flange 42 at the other end of the safety valve 30 are connected by a flange structure and are metal-sealed by the gasket ring 50, and the other end of the adapter 90 is hermetically connected with the stop valve 70 by a thread. The crossover sub 90 facilitates installation of a smaller sized shut-off valve 70 with a larger sized relief valve 30.
Wherein, the screw thread of crossover sub 90 and the screw thread of stop valve 70 match and be the tapering screw thread, and the screw thread of screw thread flange 42 and the screw thread of crossover sub 90 match and be the tapering screw thread.
Further, the safety valve 30 is a manual flat valve or a manual wedge valve or a ball valve, and the blow-down valve 20 is a manual flat valve or a manual wedge valve or a ball valve.
EXAMPLE III
As shown in fig. 4, the present embodiment further defines a detection sealing assembly 100 on the basis of the first embodiment, which includes: a first double-short circuit 12, a relief valve 30, a pressure gauge 60 and a shut-off valve 70. The third port of the three-way joint 10 is detachably connected and hermetically connected with one end of the safety valve 30 through the first double-male short circuit 12. One end of the first double-male short circuit 12 is hermetically connected with the third interface through threads, and the other end of the first double-male short circuit 12 is hermetically connected with one end of the safety valve 30 through threads. The three-way joint 10 is connected with the safety valve 30 through the first double-male short circuit 12, and the structure is simple. The other end of the relief valve 30 is sealingly connected to a shut-off valve 70. The stop valve 70 is connected to a pressure gauge 60.
The stop valve 70 can play the guard action to the manometer 60, avoids the manometer 60 unexpected damage under the great condition of pressure, if the stop valve 70 damages, can also protect the manometer 60 through closing the relief valve 30, can maintain after closing the relief valve 30 and change stop valve 70 and manometer 60.
In this embodiment, the water injection well performs water injection on the same underground stratum of all oil production wells requiring water injection on the same layer, before performing water injection on the same layer in the water injection well, the wellhead oil transportation devices of all simple oil production wells (satellite wells) communicated with the water injection well are detached, then the sealing device is installed on the wellhead, the first connector 13 of the three-way connector 10 is connected with the casing pipe through threads, the safety valve 30 is opened, the air release valve 20 is closed, and then the water injection operation is started. The sealing device can prevent the liquid in the simple oil extraction well from flowing out of the oil extraction well to cause environmental pollution during water injection. In the same-layer water injection process, the pressure change in each simple oil production well can be checked by observing the pressure gauge 60, and when the pressure value is observed to be abnormal, relevant measures can be taken in time, so that sudden accident safety accidents are avoided, and the safety is further improved. Meanwhile, in the same-layer water injection process, when the pressure value of the pressure gauge 60 of all the oil production wells is close to 0, the pressure in the oil production wells is low, the pressure in the same layer of the oil production wells is balanced, the oil production wells can continue to perform oil production operation at the moment, the vent valve 20 is opened, the oil-water well pressure-bearing sealing device is detached, the wellhead oil conveying device is installed, the oil production operation can continue to perform the oil production operation, the water injection condition of the oil production wells can be judged by observing the pressure gauge 60, the subsequent oil production operation is facilitated, and the convenience of the simple oil production well operation is improved.
Further, as shown in fig. 4, the other end of the relief valve 30 is sealingly connected to the shutoff valve 70 through a crossover joint 90. The other end of the safety valve 30 is hermetically connected with one end of the adapter 90 by a screw thread, and the other end of the adapter 90 is hermetically connected with the stop valve 70 by a screw thread. The crossover 90 facilitates installation of a smaller sized shut-off valve 70 with a larger sized relief valve 30.
The threads of the first double-male short circuit 12, the threads of the third interface of the three-way joint 10 and the threads of the safety valve 30 are matched and are both oil pipe taper thread structures, and the threads of the other end of the safety valve 30 and the threads of one end of the adapter 90 are both oil pipe taper thread structures. The threads of the adapter 90 match the threads of the shut-off valve 70 and are all tapered threads.
Further, the safety valve 30 is a manual flat valve or a manual wedge valve or a ball valve, and the blow-down valve 20 is a manual flat valve or a manual wedge valve or a ball valve.
Example four
As shown in fig. 1 and fig. 2, the present embodiment further defines a detection sealing assembly 100 on the basis of the first embodiment, which includes: the flange 101 is sealed. The sealing flange 101 is detachably connected and hermetically connected with the third interface. The three-way joint 10 is provided with a shutoff valve 70. The stop valve 70 is connected to a pressure gauge 60.
In this embodiment, a flange interface matched with the sealing flange 101 is arranged on the third interface of the three-way joint 10, and the sealing flange 101 is connected with the flange interface in a sealing manner through bolts and nuts. Wherein, a metal sealing gasket ring 103 is further arranged between the sealing flange 101 and the third interface. The embodiment has simple structure and high reliability. Wherein, stop valve 70 can play the guard action to manometer 60, avoids manometer 60 accidental damage under the great condition of pressure, if stop valve 70 damages, can also protect manometer 60 through closing relief valve 30, can maintain after closing relief valve 30 and change stop valve 70 and manometer 60.
In this embodiment, the water injection well performs water injection on the same underground stratum of all oil production wells requiring water injection on the same layer, before performing water injection on the same layer in the water injection well, the wellhead oil transportation devices of all simple oil production wells (satellite wells) communicated with the water injection well are disassembled, then the sealing devices are installed on the wellheads, the first connectors 13 of the three-way connectors 10 are in threaded connection with the casing, and then the water injection operation is started. The sealing device can prevent the liquid in the simple oil extraction well from flowing out of the oil extraction well to cause environmental pollution during water injection. In the same-layer water injection process, the pressure change in each simple oil production well can be checked by observing the pressure gauge 60, and when the pressure value is observed to be abnormal, relevant measures can be taken in time, so that sudden accident safety accidents are avoided, and the safety is further improved. Meanwhile, in the same-layer water injection process, when the pressure value of the pressure gauge 60 of all the oil production wells is close to 0, the pressure in the oil production wells is low, the pressure in the same layer of the oil production wells is balanced, the oil production wells can continue to perform oil production operation at the moment, the vent valve 20 is opened, the oil-water well pressure-bearing sealing device is detached, the wellhead oil conveying device is installed, the oil production operation can continue to perform the oil production operation, the water injection condition of the oil production wells can be judged by observing the pressure gauge 60, the subsequent oil production operation is facilitated, and the convenience of the simple oil production well operation is improved.
The first port 13 of the three-way joint 10 is connected with a casing of a wellhead of a production well through a casing pup joint 102 through threads, and a sealing connection is formed through the threads. The blow valve 20 is a manual flat valve or a manual wedge valve or a ball valve.
Further, as shown in fig. 1, 2, 3 and 4, the outer wall of the three-way joint 10 in the above four embodiments is provided with a knocking portion 11. The knocking part 11 protrudes outwards relative to the outer wall of the three-way joint 10, and when the sealing device is installed on a sleeve, the knocking part 11 serves as a force application point for rotating the sealing device, so that the threads of the first connector 13 and the threads of the sleeve can be screwed together conveniently, and the convenience of installing the sealing device is improved.
Wherein, the knocking portion 11 can be fixed on the three-way joint 10 by a fixed connection manner such as a thread, welding or riveting, preferably, the knocking portion 11 is reliably connected on the three-way joint 10 by a thread.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
The foregoing is a further detailed description of the utility model in connection with specific preferred embodiments and it is not intended to limit the utility model to the specific embodiments described. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (8)
1. The utility model provides an oil-water well pressure-bearing sealing device which characterized in that includes: the device comprises a three-way joint (10), a vent valve (20), a second double-male short circuit (80) and a detection sealing assembly (100);
a first interface (13) of the three-way joint (10) is in threaded sealing connection with a casing of a wellhead of a production well, a second interface of the three-way joint (10) is in threaded sealing connection with one end of a second double male short circuit (80), and a third interface of the three-way joint (10) is detachably connected with the detection sealing assembly (100) in a sealing connection;
the other end of the second double male short circuit (80) is connected with the emptying valve (20) in a sealing mode through threads.
2. A pressure-containing sealing device for oil and water wells, as claimed in claim 1, wherein said detection sealing assembly (100) comprises: the safety valve comprises a first double-common short circuit (12), a safety valve (30), a pressure gauge (60) and a stop valve (70);
the third interface is detachably connected and hermetically connected with one end of the safety valve (30) through the first double-male short circuit (12);
one end of the first double-male short circuit (12) is connected with the third interface in a sealing mode through threads, and the other end of the first double-male short circuit is connected with one end of the safety valve (30) in a sealing mode through threads;
the other end of the safety valve (30) is hermetically connected with the stop valve (70);
the stop valve (70) is connected with the pressure gauge (60).
3. A pressure-bearing sealing device for oil-water wells as claimed in claim 2, wherein the other end of the safety valve (30) is sealingly connected to the shut-off valve (70) through a crossover joint (90);
the other end of the safety valve (30) is hermetically connected with one end of the adapter (90) through threads;
the other end of the adapter (90) is hermetically connected with the stop valve (70) through threads.
4. A pressure-containing sealing device for oil and water wells, as claimed in claim 1, wherein said detection sealing assembly (100) comprises: a safety valve (30), a pressure gauge (60) and a stop valve (70);
both ends of the safety valve (30) are provided with flanges (41), and the third interface is detachably and fixedly connected with the flange (41) at one end of the safety valve (30) and is hermetically connected with the flange through a sealing gasket ring (50);
the stop valve (70) is connected with a flange (41) at the other end of the safety valve (30);
the stop valve (70) is connected with the pressure gauge (60).
5. An oil-water well pressure-bearing sealing device according to claim 4, characterized in that the flange (41) at the other end of the safety valve (30) is connected with the stop valve (70) in a sealing way through a threaded flange (42) and a conversion joint (90);
a flange (41) at the other end of the safety valve (30) is connected with the screw thread flange (42) in a sealing mode, and the screw thread flange (42) is connected with one end of the adapter (90) in a sealing mode through threads; the other end of the adapter (90) is hermetically connected with the stop valve (70) through threads.
6. The device for sealing oil-water wells under pressure, as claimed in claim 1, wherein said detecting sealing assembly (100) comprises: a sealing flange (101);
the sealing flange (101) is detachably connected with the third interface in a sealing manner;
a stop valve (70) is arranged on the three-way joint (10);
and a pressure gauge (60) is connected to the stop valve (70).
7. The pressure-bearing sealing device for the oil-water well is characterized in that a knocking part (11) is arranged on the outer wall of the three-way joint (10).
8. A pressure-containing sealing device for oil-water wells according to any of claims 2 to 5, characterized in that said safety valve (30) and said emptying valve (20) are both manual flat valves or manual wedge valves or ball valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298712.0U CN216811624U (en) | 2021-12-23 | 2021-12-23 | Pressure-bearing sealing device for oil-water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298712.0U CN216811624U (en) | 2021-12-23 | 2021-12-23 | Pressure-bearing sealing device for oil-water well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216811624U true CN216811624U (en) | 2022-06-24 |
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ID=82055578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123298712.0U Active CN216811624U (en) | 2021-12-23 | 2021-12-23 | Pressure-bearing sealing device for oil-water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216811624U (en) |
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2021
- 2021-12-23 CN CN202123298712.0U patent/CN216811624U/en active Active
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