CN217300525U - Casing wellhead switching device for gas storage reservoir injection and production well liquid level test - Google Patents
Casing wellhead switching device for gas storage reservoir injection and production well liquid level test Download PDFInfo
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- CN217300525U CN217300525U CN202220891512.1U CN202220891512U CN217300525U CN 217300525 U CN217300525 U CN 217300525U CN 202220891512 U CN202220891512 U CN 202220891512U CN 217300525 U CN217300525 U CN 217300525U
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Abstract
The utility model belongs to the liquid level detection field of the annular space protection liquid of notes production well, concretely relates to sleeve pipe well head switching device that is used for gas storage storehouse to annotate production well liquid level test. A bushing well head switching device for gas storage storehouse injection well liquid level test, including the sleeve pipe adapter that is used for being connected to the exit end of production tree casing valve, be equipped with open-ended extension pipe interface up on the sleeve pipe adapter, extension pipe interface connection has the extension pipe, the extension pipe is along vertical extension in order to extend the wellhead, the top of extension pipe is equipped with the start-stop valve, the import side and the extension pipe intercommunication of start-stop valve, the outlet side of start-stop valve is equipped with the test passageway and the unloading passageway of mutual intercommunication, be equipped with the tester on the test passageway and connect, be equipped with the tester unloading structure on the unloading passageway, the start-stop valve is used for forming the sound wave transmission passageway that supplies the sound wave to propagate in order to realize echo method liquid level test when opening. The technical problem of operation difficulty when the liquid level tester is used for carrying out liquid level monitoring by the echo method can be solved by the scheme.
Description
Technical Field
The utility model belongs to the liquid level detection field of the annular space protection liquid of notes production well, concretely relates to sleeve pipe well head switching device that is used for gas storage storehouse to annotate production well liquid level testing.
Background
The gas storage can store natural gas, and the natural gas is generally injected into the storage and produced out of the storage through the injection and production wells. For example, depleted gas wells may be converted to gas storage reservoirs. Injecting natural gas into the gas storage through the injection and production well in summer for collection and storage, and extracting the natural gas through the injection and production well in winter.
The injection and production well completion pipe column is generally clamped and sealed by a permanent packer pipe column, and in actual work, a protection liquid needs to be injected into an annular space (an annular space formed by a casing and an oil pipe) above the packer so as to reduce the working pressure difference of the packer, protect the inner wall of the upper casing and the outer wall of the oil pipe and relieve the problems of corrosion and scaling of the pipe column. In the use process of the injection and production well, the phenomenon of leakage of part of the annular protection liquid of the well exists, and in order to solve the leakage speed of the annular protection liquid and make reasonable supplement period and supplement amount, the liquid level depth of the annular protection liquid needs to be regularly monitored.
One of the currently used liquid level monitoring methods is an echo method, that is, a liquid level monitoring method is performed on an annular protection fluid of an injection well of a gas storage reservoir by using an echo principle, for example, a method for testing a liquid level of a wellbore of a gas well in real time is disclosed in a patent document with an application publication number of CN105649603A in the prior art, and a depth of a liquid level in a casing is measured by using a liquid level tester of the echo method. The echo method liquid level tester is generally connected to the tail end of a Christmas tree sleeve valve at the sleeve wellhead on a Christmas tree of an injection and production well of a gas storage reservoir, and the Christmas tree sleeve valve is opened during testing so that the echo method liquid level tester is communicated with the annulus. For example, in a device for detecting the level of a test oil in drilling, completion, and workover operations disclosed in patent document No. CN210343334U in the prior art, a casing branch pipe is provided at the top end of a casing, the casing branch pipe extends horizontally, one end of the casing branch pipe is communicated with the casing, and the other end is connected to a liquid level tester (i.e., a wellhead tester for the level of the test oil in the annulus of CN 210343334U).
The Christmas tree at the wellhead of the existing gas storage injection well is generally exposed on the ground. In order to avoid the influence on the performance and the service life of some parts on the Christmas tree due to the exposure of the sun for a long time, one mode is that a shielding structure is arranged above the Christmas tree, and the shielding structure which needs to be arranged is correspondingly large and not attractive due to the large area of the gas storage, and the ground operation is also influenced, and the other mode is that a well pool is arranged, wherein the depth of the well pool is generally about 2.5 meters, and the areas are different. When the liquid level of the annular protection liquid is detected for the injection and production well of the gas storage reservoir provided with the well pool, an operator needs to put into the well pool, firstly, a sleeve plug connected with the tail end of a Christmas tree sleeve valve at the position of a sleeve wellhead is removed, then, an echo method liquid level tester is installed on the sleeve valve, the oxygen content in the well pool is low, and water accumulation can also exist, so that potential safety hazards exist during construction, the horizontal space between a part of injection and production well Christmas trees and the wall of the well pool is limited, liquid level test liquid cannot be supplied to installation sometimes, the top end of the injection and production well sleeve is located at a height of about 1.7 meters away from the bottom of the well, ascending operation can also be needed, the difficulty and labor intensity of the operator in dismounting the sleeve adapter are high, corresponding operation procedures need to be handled, and multiple persons need to operate simultaneously.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sleeve pipe well head switching device for gas storage reservoir is annotated and is adopted well liquid level test to solve the technical problem who utilizes echo method liquid level tester to carry out the operation difficulty when liquid level monitoring.
In order to achieve the above object, the utility model provides a technical scheme that is used for sleeve pipe well head switching device of gas storage storehouse notes production well liquid level test is: the utility model provides a bushing mouth switching device for gas storage storehouse injection well liquid level test, including the sleeve pipe adapter that is used for being connected to the exit end of production tree casing valve, be equipped with the extension pipe interface of open-ended up on the sleeve pipe adapter, the extension pipe interface is connected with the extension pipe, the extension pipe is along vertical extension in order to extend the wellhole mouth, the top of extension pipe is equipped with the on-off valve, the import side and the extension pipe intercommunication of on-off valve, the outlet side of on-off valve is equipped with the test channel and the unloading passageway of intercommunication each other, be equipped with the tester joint that is used for being connected with echo method liquid level tester on the test channel, be equipped with tester emptying structure on the unloading passageway, the on-off valve is used for making tester joint and sleeve pipe adapter intercommunication and form the sound wave transmission passageway that supplies the sound wave to propagate in order to realize echo method liquid level test when opening.
The beneficial effects are that: the utility model provides a bushing well head switching device for gas storage reservoir injection production well liquid level test compares with directly installing echo method liquid level tester on the casing valve among the prior art, the extension pipe that extends along vertical on the bushing switching head can make echo method liquid level tester's mounted position and ground parallel and level, the installation of operating personnel of being convenient for, operating personnel need not go to the shaft bottom, comparatively safety, and the concrete length of extension pipe can be designed according to actual conditions, be favorable to improving the application scope of this switching device; the opening and closing valve at the top end of the extension pipe can be opened when liquid level test of the annular protection liquid is carried out, so that a gas path between the echo method liquid level tester and the sleeve adapter is opened, the annular protection liquid is communicated with the echo method liquid level tester, and the opening and closing valve is closed after the test is finished, so that the gas path between the echo method liquid level tester and the sleeve adapter is closed, and gas leakage is avoided; the tester emptying structure on the opening and closing valve can discharge gas on a connecting path between the opening and closing valve and the echo method liquid level tester, so that the echo method liquid level tester is convenient to disassemble.
As a further improvement, more than two extension pipe connectors are distributed on the casing adapter around a horizontal axis, and the casing wellhead adapter device for the gas storage injection and production well liquid level test further comprises a plugging structure for plugging the extension pipe connectors which are not connected with the extension pipes.
The beneficial effects are that: more than two extension pipe interfaces are distributed on the sleeve adapter around the horizontal axis, so that the extension pipe interfaces can face upwards without rotating the sleeve adapter too much when the sleeve adapter is installed, the installation is convenient, and the installation efficiency is improved.
As further improvement, the sleeve pipe adapter is of a cylinder structure, and the joints of the extension pipes are arranged on the peripheral surface of the sleeve pipe adapter and are uniformly distributed along the circumferential direction.
The beneficial effects are that: the casing adapter is a cylinder, the extension pipe connector is located in the circumferential direction of the casing adapter, the extension pipe connector can be upwards rotated in a screwing mode, and the structure is simplified on the premise that the connection of the extension pipe is not affected.
As a further improvement, the plugging structure comprises a plug and a sealing gasket arranged between the plug and the sleeve adapter.
The beneficial effects are that: the plug is simple in structure and convenient to install, the sealing gasket can play a sealing role, gas leakage is avoided, the gasket can also play a role, and the connection strength between the plug and the sleeve adapter is improved.
As a further improvement, the outer peripheral surface of the sleeve adapter is provided with a plane matched with the plug.
The beneficial effects are that: the planar setting makes for the cooperation of face and face between sleeve pipe adapter and the plug, and the installation of being convenient for is favorable to further improving the joint strength between plug and the sleeve pipe adapter.
As a further improvement, the tester emptying structure is an emptying valve which is arranged independently of the opening and closing valve and is connected to the emptying channel.
The beneficial effects are that: the atmospheric valve is as tester evacuation structure, the installation of being convenient for.
As a further improvement, the opening and closing valve is provided with a vent pipeline connector for connecting a vent pipeline.
The beneficial effects are that: the emptying pipeline is communicated with the opening and closing valve, so that the modularization of the opening and closing valve is realized.
As further improvement, be equipped with adapter emptying structure on the sleeve pipe adapter.
The beneficial effects are that: set up adapter structure of empting on the sleeve pipe adapter, can avoid piling up and influence subsequent test in the sleeve pipe adapter with gaseous and other debris discharge between sleeve pipe adapter and the production tree valve.
As a further improvement, the adapter emptying structure is an emptying screwed plug.
The beneficial effects are that: the emptying pipe plug is simple in structure and convenient to install on the sleeve adapter.
As a further improvement, the on-off valve is a stop valve or a ball valve.
The beneficial effects are that: the stop valve or the ball valve can be opened and closed to close the connection path between the echo method liquid level tester and the annular space, and the stop valve or the ball valve is of a common structure in the market and is convenient to install.
Drawings
Fig. 1 is a schematic structural view of a casing wellhead switching device for testing the liquid level of an injection well and an extraction well of a gas storage;
FIG. 2 is an exploded perspective view of FIG. 1;
figure 3 is a schematic structural view of a sleeve adapter;
figure 4 is an exploded perspective view of the sleeve adapter of figure 3;
FIG. 5 is a schematic view of the assembly of the on/off valve, the blow valve and the fitting;
fig. 6 is an exploded perspective view of fig. 5.
Description of reference numerals: 1. a tester connector; 2. a stop valve; 3. an emptying valve; 4. an emptying pipeline interface; 5. lengthening a pipe; 6. a sleeve adapter; 7. emptying the plug; 8. plugging with a thread; 9. an extension tube interface; 10. a vent port; 11. a gasket; 12. a planar structure; 13. a test channel; 14. a valve body of the emptying valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is to be noted that, in the detailed description of the present invention, terms such as "first" and "second" may be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that such actual relationship or order exists between such entities or operations. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the appearances of the phrase "comprising an … …" or similar limitation may be present without necessarily excluding the presence of additional identical elements in the process, method, article, or apparatus that comprises the same elements.
In the description of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "connected" that may be present are to be construed broadly, e.g., as a fixed connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.
The present invention will be described in further detail with reference to examples.
The utility model discloses in the embodiment 1 that is used for sleeve pipe well head switching device of gas storage storehouse notes production well liquid level test that provides:
as shown in fig. 1 and 2, the casing wellhead switching device for the gas storage reservoir injection and production well liquid level test comprises a casing adapter 6 and an opening and closing valve, the casing adapter 6 is used for being connected to a casing valve of a production tree at the injection and production well wellhead, the casing adapter 6 is communicated with the opening and closing valve through an extension pipe 5, a tester connector 1 is arranged on the opening and closing valve, and the tester connector 1 is used for being connected with an echo method liquid level tester.
As shown in fig. 3 and 4, the casing adapter 6 is a cylinder structure and is formed by transformation on the basis of the original casing plug, the casing adapter 6 comprises a casing body, the casing body extends along the left-right direction, one end of the casing adapter 6 is an open end, in the embodiment, the open end is the left end of the casing adapter 6, and the open end is used for being screwed on a casing valve with an opening facing the right on the Christmas tree so as to enable the casing adapter 6 to extend left and right. The right-hand member of sleeve pipe adapter 6 is equipped with drain 10, and drain 10 is by the shutoff of the unloading plug 7 of adapter unloading structure when carrying out annular space protection liquid level test, and the back is torn open to unloading plug 7, and the gas or other debris between start-stop valve and the sleeve pipe adapter 6 can be discharged by drain 10. At present, the sleeve wellhead is provided with a pressure detection probe, so that the gas pressure in the injection and production well can be led out, and in other embodiments, when the pressure detection probe is not positioned, a pressure gauge can be installed at the vent 10 of the sleeve adapter 6.
The circumference of the sleeve adapter 6 is provided with two plane structures 12, the two plane structures 12 are symmetrically arranged along the diameter of the sleeve adapter 6, each plane structure 12 is provided with an extension pipe connector 9, the two extension pipe connectors 9 are threaded holes, one extension pipe connector 9 is used for connecting an extension pipe 5 in a threaded manner, and the other extension pipe connector 9 is provided with a plugging structure which is a plug 8, the plug 8 is a bolt-type plug, the plug 8 is inserted into the extension pipe connector 9, the extension pipe connector 9 which is not connected with the extension pipe 5 is plugged, a sealing gasket 11 is arranged between the plug 8 and the plane structure 12 and used for increasing the sealing performance between the plug 8 and the sleeve adapter 6.
As shown in fig. 1 and 2, the whole elongated tube 5 is of a long tube structure, the upper end of the elongated tube 5 is connected to the on-off valve, the lower end of the elongated tube 5 is connected to the casing adapter 6, and the actual length of the elongated tube 5 can be designed according to the actual depth of the well pool of the gas storage reservoir, so that the on-off valve is kept flush with the ground, and the operator can install the echo method liquid level tester conveniently.
As shown in fig. 5 and fig. 6, the open/close valve in this embodiment is stop valve 2, the valve body of stop valve 2 extends in the up-down direction, the left side of the valve body is provided with a tester emptying structure, in this embodiment, the tester emptying structure is emptying valve 3, emptying valve 3 is a needle valve, the connection is made on the valve body of stop valve 2, an emptying channel is formed between emptying valve 3 and stop valve 2, emptying pipeline interface 4 is arranged on emptying valve body 14, emptying pipeline interface 4 is used for emptying pipeline connection, and the gas between stop valve 2 and the echo method liquid level tester is discharged. The top of 2 valve bodies on stop valve is equipped with test tube, and test tube's lumen forms test channel 13, and test tube's top is equipped with tester joint 1, and tester joint 1 supplies echo method liquid level tester to connect. Stop valve 2 is prior art, and the latus rectum is great in the valve, can guarantee that the sound wave passes through. One skilled in the art can also select different valves, such as ball valves, to meet acoustic transmission requirements.
During installation, the casing valve door for the casing adapter 6 to connect on the Christmas tree of the injection and production well head is closed, the casing adapter 6 is connected on the casing valve of the Christmas tree, then the stop valve 2 and the emptying valve 3 are closed, and the casing valve on the Christmas tree is opened. During the test, install echo method liquid level tester on the tester joint 1 of stop valve 2 top through high-pressure hose, later open stop valve 2 for echo method liquid level tester and annular space intercommunication, utilize the echo principle to detect out the liquid level of annular space protection liquid by echo method liquid level tester. After the test, close stop valve 2, open atmospheric valve 3 for the gas discharge between echo method liquid level tester and the stop valve 2, later with echo method liquid level tester follow joint 1 dismantle can.
The utility model provides a sleeve pipe well head switching device for gas storage reservoir notes production well liquid level test, compare with directly installing echo method liquid level tester on the sleeve pipe valve among the prior art, the extension pipe 5 along vertical extension on the sleeve pipe adapter 6 can make the mounted position of echo method liquid level tester and ground parallel and level, the installation of operating personnel of being convenient for, operating personnel need not go to the shaft bottom, do not need the operation of ascending a height, comparatively safe, and the concrete length of extension pipe 5 can be designed according to actual conditions, be favorable to improving the application scope of this switching device; the opening and closing valve at the top end of the lengthening pipe 5 can be opened when the liquid level test of the annular protection liquid is carried out, so that an air passage between the echo method liquid level tester and the sleeve adapter 6 is opened, the annular is communicated with the echo method liquid level tester, and the opening and closing valve is closed after the test is finished, so that the air passage between the echo method liquid level tester and the sleeve adapter 6 is closed, and the gas leakage is avoided; the tester emptying structure on the opening and closing valve can exhaust gas on a connecting path between the opening and closing valve and the echo method liquid level tester, so that the echo method liquid level tester is convenient to disassemble.
The utility model discloses in the embodiment 2 that is used for sleeve pipe well head switching device of gas storage storehouse notes production well liquid level test that provides:
the present embodiment is different from embodiment 1 in that: in embodiment 1, the sleeve adapter 6 is provided with two symmetrically arranged extension pipe joints 9 in the circumferential direction. In this embodiment, the extension pipe joints 9 are provided with more than three extension pipe joints in the circumferential direction of the sleeve adapter 6. In other embodiments, only one extension tube connector 9 may be provided on the circumference of the sleeve adapter 6, and the extension tube connector 9 is ensured to face upward by screwing the sleeve adapter 6 during connection.
The utility model discloses in the embodiment 3 that is used for sleeve pipe well head switching device of gas storage storehouse notes production well liquid level test that provides:
the present embodiment is different from embodiment 1 in that: in embodiment 1, the blocking structure for blocking the extension pipe joint 9 comprises a bolt-type plug, and the plug 8 is installed in the extension pipe joint 9 through a sealing gasket 11. In this embodiment, the plugging structure may be a nut-type plug.
The utility model discloses in the embodiment 4 that is used for sleeve pipe well head switching device of gas storage storehouse notes production well liquid level test that provides:
the present embodiment is different from embodiment 1 in that: in embodiment 1, a plane is provided at the extension pipe joint 9 on the outer peripheral surface of the sleeve adapter 6, and the plug 8 is installed on the plane. In the present embodiment, the outer peripheral surface of the sleeve adapter 6 is a cylindrical surface, the plug 8 is directly mounted on the cylindrical surface, and a sealing gasket is disposed between the plug 8 and the cylindrical surface.
The utility model discloses in the embodiment 5 that is used for sleeve pipe well head switching device of gas storage storehouse notes production well liquid level test that provides:
the present embodiment is different from embodiment 1 in that: in embodiment 1, the tester emptying structure is emptying valve 3, and after the emptying valve 3 is opened, the gas between the stop valve 2 and the echo method liquid level tester is discharged through an emptying pipeline. In this embodiment, the tester venting structure comprises a venting port arranged on the valve body of the stop valve, a plug is plugged at the venting port, and gas between the stop valve 2 and the liquid level tester is discharged from the venting port after the plug is opened.
The utility model discloses in the embodiment 6 that is used for sleeve pipe well head switching device of gas storage storehouse notes production well liquid level test that provides:
the present embodiment is different from embodiment 1 in that: in embodiment 1, a vent line connector 4 is provided on the valve body of the vent valve 3. In this embodiment, the valve body of the atmospheric valve 3 is not provided with the atmospheric line interface 4, and an atmospheric port is directly arranged on the valve body of the atmospheric valve 3, so that the gas is discharged from the atmospheric port.
The utility model discloses in the embodiment 7 that is used for sleeve pipe well head switching device of gas storage reservoir notes production well liquid level test that provides:
the present embodiment is different from embodiment 1 in that: in embodiment 1, the sleeve adapter 6 is formed by modifying an original sleeve plug. In this embodiment, the casing adapter 6 is L-shaped, and includes a vertical extending section and a horizontal extending section, the left end of the horizontal extending section is connected to the casing valve of the christmas tree, and the vertical extending section is connected to the extension pipe. In other embodiments, the sleeve adapter 6 may also be T-shaped.
The above description is only the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes made by the content of the specification and the drawings should be included in the protection scope of the present invention.
Claims (10)
1. A casing wellhead switching device for testing the liquid level of an injection well and a production well of a gas storage warehouse is characterized by comprising a casing adapter (6) connected to the outlet end of a casing valve of a Christmas tree, an elongated pipe interface (9) with an upward opening is arranged on the casing adapter (6), the elongated pipe interface (9) is connected with an elongated pipe (5), the elongated pipe (5) extends vertically to extend to a well pool port, an opening and closing valve is arranged at the top end of the elongated pipe (5), the inlet side of the opening and closing valve is communicated with the elongated pipe (5), the outlet side of the opening and closing valve is provided with a testing channel (13) and a venting channel which are mutually communicated, the testing channel (13) is provided with a tester connector (1) connected with an echo method liquid level tester, and the venting channel is provided with a tester venting structure, the opening and closing valve is used for communicating the tester connector (1) with the sleeve adapter (6) when the testing device is opened so as to form a sound wave transmission channel for sound wave transmission to realize liquid level testing by an echo method.
2. The casing wellhead adapter device for the gas storage injection and production well liquid level test is characterized in that more than two extension pipe connectors (9) are distributed on the casing adapter (6) around a horizontal axis, and the casing wellhead adapter device for the gas storage injection and production well liquid level test further comprises a blocking structure for blocking the extension pipe connectors (9) which are not connected with the extension pipes (5).
3. The casing wellhead adapter device for the gas storage injection and production well liquid level test is characterized in that the casing adapter (6) is of a cylinder structure, and the extension pipe connectors (9) are arranged on the outer peripheral surface of the casing adapter device and are uniformly distributed along the circumferential direction.
4. The casing wellhead adapter device for gas storage reservoir injection and production well liquid level test according to claim 2 or 3, characterized in that the plugging structure comprises a plug (8) and a sealing gasket (11) arranged between the plug (8) and the casing adapter (6).
5. The casing wellhead switching device for the gas storage injection and production well liquid level test is characterized in that a plane matched with the plug (8) is arranged on the outer peripheral surface of the casing adapter (6).
6. The casing wellhead adapter device for gas storage reservoir injection and production well liquid level test according to claim 1, 2 or 3, characterized in that the tester emptying structure is an emptying valve (3) which is arranged independently of an opening and closing valve and is connected to an emptying channel.
7. The sleeve wellhead switching device for the gas storage reservoir injection and production well liquid level test according to claim 1, 2 or 3, characterized in that the opening and closing valve is provided with a vent pipeline connector (4) for connecting a vent pipeline.
8. The casing wellhead switching device for the gas storage reservoir injection and production well liquid level test is characterized in that a casing adapter emptying structure is arranged on the casing adapter (6).
9. The casing wellhead adapter device for gas storage reservoir injection and production well liquid level testing according to claim 8, characterized in that the adapter emptying structure is an emptying plug (7).
10. The casing wellhead adapter device for gas storage reservoir injection and production well liquid level test according to claim 1, 2 or 3, characterized in that the opening and closing valve is a stop valve (2) or a ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220891512.1U CN217300525U (en) | 2022-04-18 | 2022-04-18 | Casing wellhead switching device for gas storage reservoir injection and production well liquid level test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220891512.1U CN217300525U (en) | 2022-04-18 | 2022-04-18 | Casing wellhead switching device for gas storage reservoir injection and production well liquid level test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217300525U true CN217300525U (en) | 2022-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220891512.1U Active CN217300525U (en) | 2022-04-18 | 2022-04-18 | Casing wellhead switching device for gas storage reservoir injection and production well liquid level test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217300525U (en) |
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2022
- 2022-04-18 CN CN202220891512.1U patent/CN217300525U/en active Active
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