CN215804477U - Convenient flow structure of well head single flow valve - Google Patents
Convenient flow structure of well head single flow valve Download PDFInfo
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- CN215804477U CN215804477U CN202121016711.XU CN202121016711U CN215804477U CN 215804477 U CN215804477 U CN 215804477U CN 202121016711 U CN202121016711 U CN 202121016711U CN 215804477 U CN215804477 U CN 215804477U
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Abstract
The utility model discloses a convenient flow structure of a wellhead check valve, which comprises a wellhead pipeline, a sand production flow pipeline and a check valve; the device also comprises a through flow pipeline and a check valve flow pipeline; the straight-through flow pipeline and the check valve flow pipeline are in parallel connection; the upper end of the straight-through flow pipeline is communicated with a sand production flow pipeline, and the lower end of the straight-through flow pipeline is communicated with a wellhead pipeline; the upper end of the one-way valve flow pipeline is communicated with a sand production flow pipeline, and the lower end of the one-way valve flow pipeline is communicated with a wellhead pipeline; and a check valve is arranged on the check valve flow pipeline. When the check of the check valve ball of the single-flow valve is needed, the check and the replacement of the check valve ball of the single-flow valve are completed without influencing the sand production caused by the instantaneous high pressure caused by the stop of injection by opening and closing the corresponding gate valves.
Description
Technical Field
The utility model relates to the technical field of oil field water injection well process pipe columns, in particular to a convenient flow structure of a wellhead check valve.
Background
The original water injection well wellhead check valve flow has three disadvantages: firstly, the check valve ball cannot be replaced without stopping injection, so that sand is produced in a water injection layer when the injection is stopped, tools or pipe columns are buried in sand, the whole underground pipe column cannot be normally lifted, and the overhaul operation is needed; secondly, whether a valve ball of the check valve is punctured or lost cannot be checked; thirdly, when the check valve ball is replaced, high-pressure water is stored in the valve body, and the personal safety is seriously threatened.
Publication (bulletin) No.: CN203669814U, publication (public notice) day: 2014-06-25 provides an annular wellhead flow device. The annular wellhead flow device comprises an oil pipeline, the oil pipeline is communicated with an oil return pipeline through a one-way valve and an oil return valve, the pipeline between the one-way valve and the oil return valve is connected with an air pipeline in a bypass mode, a sleeve valve and the one-way valve are connected to the air pipeline in series, a water mixing pipeline is connected with a pipeline at the lower end of the oil return valve of the oil return pipeline, and a part of pipeline is sleeved outside the air pipeline in a diameter-enlarged mode before the water mixing pipeline is communicated with the oil return pipeline. Due to the structure that the sleeve of the combination valve is embedded in the water mixing pipeline, the sleeve has the heat tracing anti-freezing function, and the difficult problem that the annular wellhead flow device is easy to freeze and block in winter is solved; the polyamide resin heat-insulating layer is additionally arranged on the combined valve body, so that the combined valve body does not need to be repeatedly heat-insulated when the combined valve is overhauled every year in winter, and the aims of facilitating safe production management and reducing production and operation costs are fulfilled.
Publication (bulletin) No.: CN210289692U, publication (public notice) day: 2020-04-10 provides an oil extraction wellhead flow tube group and an oil extraction wellhead device, wherein the oil extraction wellhead flow tube group comprises an oil pipeline, a gas pipeline and a gas release valve, one end of the oil pipeline is connected with a choke of an oil extraction tree, the gas release valve is connected with a sleeve bypass gate valve, one end of the gas pipeline is connected with the gas release valve, and the other end of the gas pipeline and the other end of the oil pipeline are connected with a single-well oil collection pipeline through a first connecting tee. The production wellhead device comprises a production tree and a production wellhead flow pipe group, and the production tree comprises an oil nozzle and a sleeve bypass gate valve. The oil extraction well head flow tube group is installed between an oil extraction well and a single well pipeline, plays the dual functions of connecting the well head and the single well pipeline and discharging the casing, realizes the single well production, releases casing gas, controls the casing pressure, prevents a large amount of gas from entering an oil well pump and an electric pump to cause 'cavitation' and 'airlock' to influence the pump efficiency and even stop the production, and enables the oil well to stably produce for a long time.
In summary, the technical solutions of the above-disclosed technologies, the technical problems to be solved, and the advantageous effects thereof are all different from the present invention, and no technical inspiration exists in the above-disclosed technical documents for further technical features, technical problems to be solved, and advantageous effects thereof.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a convenient flow structure of a wellhead check valve, which is used for completing check and replacement of a valve ball of the check valve by opening and closing a corresponding gate valve without influencing sand production caused by instantaneous high pressure due to injection stop when the check valve ball of the check valve is required to be leaked.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the convenient flow structure of the wellhead check valve comprises a wellhead pipeline, a sand production flow pipeline and a check valve;
the device also comprises a through flow pipeline and a check valve flow pipeline;
the straight-through flow pipeline and the check valve flow pipeline are in parallel connection;
the upper end of the straight-through flow pipeline is communicated with a sand production flow pipeline, and the lower end of the straight-through flow pipeline is communicated with a wellhead pipeline;
the upper end of the one-way valve flow pipeline is communicated with a sand production flow pipeline, and the lower end of the one-way valve flow pipeline is communicated with a wellhead pipeline;
and a check valve is arranged on the check valve flow pipeline.
Further, the straight-through flow pipeline comprises a straight-through upper pipeline and a straight-through lower pipeline;
the upper end of the straight-through upper pipeline is connected with a sand production flow pipeline, and the lower end of the straight-through lower pipeline is connected with a wellhead pipeline;
and a straight-through gate valve is arranged between the lower end of the straight-through upper pipeline and the upper end of the straight-through lower pipeline.
Furthermore, the check valve flow pipeline comprises a check valve flow upper pipeline and a check valve flow lower pipeline;
the upper end of the upper pipeline of the one-way valve flow is connected with a sand production flow pipeline, and the lower end of the lower pipeline of the one-way valve flow is connected with a wellhead pipeline;
a check valve is arranged between the lower end of the upper pipeline of the check valve flow and the upper end of the lower pipeline of the check valve flow;
an upper stop gate valve is installed on the check valve flow upper pipeline, and a lower stop gate valve is installed on the check valve flow lower pipeline.
Furthermore, a leakage detecting pipe communication opening is formed in the pipeline under the flow of the check valve, the leakage detecting pipe communication opening is communicated with a leakage detecting pipe, and a leakage detecting gate valve is installed on the leakage detecting pipe;
and the position of the leakage testing pipe communication port on the pipeline under the flow path of the one-way valve is positioned between the check valve and the lower stop valve.
Furthermore, a sand outlet gate valve is arranged on the sand outlet flow pipeline.
Further, the wellhead pipeline is also communicated with a return pipeline, and a return gate valve is installed on the return pipeline.
Compared with the prior art, the utility model has the following beneficial effects:
when the check of the check valve ball of the single-flow valve is needed, the check and the replacement of the check valve ball of the single-flow valve are completed by opening and closing the corresponding gate valve without influencing the sand production caused by the instantaneous high pressure caused by the stop of injection, and the safety of operators is also protected.
Drawings
FIG. 1 is a schematic diagram of a convenient flow structure of a wellhead check valve of the present invention.
In the figure: a sand discharge gate valve 1; a sand production process pipeline 2; an upper stop gate valve 3; a one-way valve flow upper line 4; a pressing cap 5; a valve body 6; a valve ball 7; a check valve flow lower line 8; a leakage detecting pipe 9; a leak testing gate valve 10; a lower gate stop valve 11; directly through the upper line 12; a straight-through gate valve 13; through the lower line 14; a return line 15; a return gate valve 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a technical solution:
the convenient flow structure of the wellhead check valve comprises a wellhead pipeline, a sand production flow pipeline and a check valve;
the device also comprises a through flow pipeline and a check valve flow pipeline;
the straight-through flow pipeline and the check valve flow pipeline are in parallel connection;
the upper end of the straight-through flow pipeline is communicated with a sand production flow pipeline, and the lower end of the straight-through flow pipeline is communicated with a wellhead pipeline;
the upper end of the one-way valve flow pipeline is communicated with a sand production flow pipeline, and the lower end of the one-way valve flow pipeline is communicated with a wellhead pipeline;
and a check valve is arranged on the check valve flow pipeline.
Further, the straight-through flow lines include a straight-through upper line 12, a straight-through lower line 14;
the upper end of the straight-through upper pipeline is connected with a sand production flow pipeline 2, and the lower end of the straight-through lower pipeline is connected with a wellhead pipeline;
and a straight-through gate valve 13 is arranged between the lower end of the straight-through upper pipeline and the upper end of the straight-through lower pipeline.
Further, the check valve flow pipeline comprises a check valve flow upper pipeline 4 and a check valve flow lower pipeline 8;
the upper end of the upper pipeline of the one-way valve flow is connected with a sand production flow pipeline, and the lower end of the lower pipeline of the one-way valve flow is connected with a wellhead pipeline;
a check valve is arranged between the lower end of the upper pipeline of the check valve flow and the upper end of the lower pipeline of the check valve flow, and the check valve is a pressure cap 5; a valve body 6; the structure formed by the valve ball 7 is the prior art and is not described again;
an upper stop gate valve 3 is installed on the check valve flow upper pipeline, and a lower stop gate valve 11 is installed on the check valve flow lower pipeline.
Furthermore, a leakage detecting pipe communication opening is formed in the pipeline under the flow of the one-way valve, the leakage detecting pipe communication opening is communicated with a leakage detecting pipe 9, and a leakage detecting gate valve 10 is installed on the leakage detecting pipe;
and the position of the leakage testing pipe communication port on the pipeline under the flow path of the one-way valve is positioned between the check valve and the lower stop valve.
Furthermore, a sand outlet gate valve 1 is arranged on the sand outlet flow pipeline.
Further, the wellhead line is also communicated with a return line 15, and a return gate valve 16 is installed on the return line.
The function is as follows: when the check of the check valve ball of the single-flow valve is needed, the check and the replacement of the check valve ball of the single-flow valve are completed without influencing the sand production caused by the instantaneous high pressure caused by the stop of injection by opening and closing the corresponding gate valves.
The working principle is as follows: when the check of the single-flow valve ball is needed, the gate valve 13 and the gate valve 3 are opened, and the gate valve 11 is closed. Then opening the leakage check gate valve 10, if the continuous water outlet check valve is lost, otherwise, the continuous water outlet check valve is not lost; when the valve ball needs to be replaced if the check valve is lost, the gate valve 13 is opened, the gate valve 3 and the gate valve 11 are closed, then the leakage-checking gate valve 10 is opened for pressure relief, and the pressure cap 5 is unscrewed to take out the valve ball 7 for replacing the valve ball.
After the check valve is replaced, the straight gate valve 13 is closed, the lower stop gate valve 11 and the upper stop gate valve 3 are opened, and the check valve works normally in the process.
Example 2:
referring to fig. 1, the present invention provides a technical solution:
the convenient flow structure of the wellhead check valve comprises a wellhead pipeline, a sand production flow pipeline and a check valve;
the device also comprises a through flow pipeline and a check valve flow pipeline;
the straight-through flow pipeline and the check valve flow pipeline are in parallel connection;
the upper end of the straight-through flow pipeline is communicated with a sand production flow pipeline, and the lower end of the straight-through flow pipeline is communicated with a wellhead pipeline;
the upper end of the one-way valve flow pipeline is communicated with a sand production flow pipeline, and the lower end of the one-way valve flow pipeline is communicated with a wellhead pipeline;
and a check valve is arranged on the check valve flow pipeline.
Further, the straight-through flow lines include a straight-through upper line 12, a straight-through lower line 14;
the upper end of the straight-through upper pipeline is connected with a sand production flow pipeline 2, and the lower end of the straight-through lower pipeline is connected with a wellhead pipeline;
and a straight-through gate valve 13 is arranged between the lower end of the straight-through upper pipeline and the upper end of the straight-through lower pipeline.
Further, the check valve flow pipeline comprises a check valve flow upper pipeline 4 and a check valve flow lower pipeline 8;
the upper end of the upper pipeline of the one-way valve flow is connected with a sand production flow pipeline, and the lower end of the lower pipeline of the one-way valve flow is connected with a wellhead pipeline;
a check valve is arranged between the lower end of the upper pipeline of the check valve flow and the upper end of the lower pipeline of the check valve flow, and the check valve is a pressure cap 5; a valve body 6; the structure formed by the valve ball 7 is the prior art and is not described again;
an upper stop gate valve 3 is installed on the check valve flow upper pipeline, and a lower stop gate valve 11 is installed on the check valve flow lower pipeline.
Furthermore, a leakage detecting pipe communication opening is formed in the pipeline under the flow of the one-way valve, the leakage detecting pipe communication opening is communicated with a leakage detecting pipe 9, and a leakage detecting gate valve 10 is installed on the leakage detecting pipe;
and the position of the leakage testing pipe communication port on the pipeline under the flow path of the one-way valve is positioned between the check valve and the lower stop valve.
Example 3:
referring to fig. 1, the present invention provides a technical solution:
the convenient flow structure of the wellhead check valve comprises a wellhead pipeline, a sand production flow pipeline and a check valve;
the device also comprises a through flow pipeline and a check valve flow pipeline;
the straight-through flow pipeline and the check valve flow pipeline are in parallel connection;
the upper end of the straight-through flow pipeline is communicated with a sand production flow pipeline, and the lower end of the straight-through flow pipeline is communicated with a wellhead pipeline;
the upper end of the one-way valve flow pipeline is communicated with a sand production flow pipeline, and the lower end of the one-way valve flow pipeline is communicated with a wellhead pipeline;
and a check valve is arranged on the check valve flow pipeline.
Although fig. 1 is used for all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as the parts or structural features missing in the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiments with more components or structural features are only the best embodiments, and the embodiments with fewer components are the basic embodiments, but the basic objects of the utility model can also be achieved, so all the modified embodiments are within the protection scope of the utility model.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. 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 description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 do not necessarily 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.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The convenient flow structure of the wellhead check valve comprises a wellhead pipeline, a sand production flow pipeline and a check valve;
it is characterized by also comprising a through flow pipeline and a one-way valve flow pipeline;
the straight-through flow pipeline and the check valve flow pipeline are in parallel connection;
the upper end of the straight-through flow pipeline is communicated with a sand production flow pipeline, and the lower end of the straight-through flow pipeline is communicated with a wellhead pipeline;
the upper end of the one-way valve flow pipeline is communicated with a sand production flow pipeline, and the lower end of the one-way valve flow pipeline is communicated with a wellhead pipeline;
and a check valve is arranged on the check valve flow pipeline.
2. The wellhead check valve portable flow structure of claim 1, wherein the straight-through flow line comprises a straight-through upper line, a straight-through lower line;
the upper end of the straight-through upper pipeline is connected with a sand production flow pipeline, and the lower end of the straight-through lower pipeline is connected with a wellhead pipeline;
and a straight-through gate valve is arranged between the lower end of the straight-through upper pipeline and the upper end of the straight-through lower pipeline.
3. A wellhead check valve convenient flow structure as claimed in claim 1 or 2, wherein the check valve flow line comprises a check valve flow upper line, a check valve flow lower line;
the upper end of the upper pipeline of the one-way valve flow is connected with a sand production flow pipeline, and the lower end of the lower pipeline of the one-way valve flow is connected with a wellhead pipeline;
a check valve is arranged between the lower end of the upper pipeline of the check valve flow and the upper end of the lower pipeline of the check valve flow;
an upper stop gate valve is installed on the check valve flow upper pipeline, and a lower stop gate valve is installed on the check valve flow lower pipeline.
4. The convenient flow structure of a wellhead check valve according to claim 3, wherein a leak testing pipe communication port is further formed in a check valve flow path pipeline, the leak testing pipe communication port is communicated with a leak testing pipe, and a leak testing gate valve is mounted on the leak testing pipe;
and the position of the leakage testing pipe communication port on the pipeline under the flow path of the one-way valve is positioned between the check valve and the lower stop valve.
5. A wellhead check valve convenient flow structure as claimed in claim 1, 2 or 4, wherein a sand gate valve is mounted on the sand production flow line.
6. A wellhead check valve flow structure as claimed in claim 1, 2 or 4, wherein the wellhead pipeline is also communicated with a return pipeline, and a return gate valve is mounted on the return pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121016711.XU CN215804477U (en) | 2021-05-12 | 2021-05-12 | Convenient flow structure of well head single flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121016711.XU CN215804477U (en) | 2021-05-12 | 2021-05-12 | Convenient flow structure of well head single flow valve |
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| Publication Number | Publication Date |
|---|---|
| CN215804477U true CN215804477U (en) | 2022-02-11 |
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|---|---|---|---|
| CN202121016711.XU Active CN215804477U (en) | 2021-05-12 | 2021-05-12 | Convenient flow structure of well head single flow valve |
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| CN (1) | CN215804477U (en) |
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- 2021-05-12 CN CN202121016711.XU patent/CN215804477U/en active Active
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