Wellhead automatic sampling device

Abstract

The utility model provides a wellhead automatic sampling device which comprises a sampling cavity, a sewage discharge cavity, a sampling electromagnetic valve, a sewage discharge electromagnetic valve and a control panel in communication connection with the sampling electromagnetic valve and the sewage discharge electromagnetic valve, and the sampling cavity and the sewage discharge cavity are connected with a production pipeline through a sampling pipeline and a sewage discharge pipeline respectively. And the sampling electromagnetic valve and the blow-off electromagnetic valve are respectively arranged on the sampling pipeline and the blow-off pipeline. On one hand, automatic sampling can be realized, the contact time of an operator and a sample is shortened, and the sampling time efficiency is improved; on the other hand, the sewage discharge cavity is arranged, so that the taken liquid sample better meets the requirement of an experimental sample, and the data obtained by experimental analysis is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil and gas well sampling technical field, specifically, relate to a wellhead automatic sampling device. BACKGROUND

[0002] In the oil and gas production process, usually need to carry out sampling at the wellhead, to facilitate the analysis of the oil and gas production, and improve the production process according to the result of analysis. Since the oil and gas from the wellhead is easy to be mixed with toxic gas or other impurity gas, in order to ensure the accuracy of experimental analysis data, it is necessary to carry out pollution treatment on the oil and gas before sampling. The existing part of sampling mode carries out sampling through simple sampling valve, and it is easy to cause leakage and splash, which causes great risk to personal safety and environmental safety. Moreover, it does not have the pollution function, which affects the accuracy of analysis experiment. SUMMARY

[0003] One purpose of the utility model is to provide a wellhead automatic sampling device, which can realize automatic sampling on one hand, reduce the contact time of the operator and the sample, and improve the sampling timeliness. On the other hand, by setting the pollution cavity, the taken liquid sample is more in line with the experimental sample requirements, and the data obtained by experimental analysis is more accurate.

[0004] According to the utility model, a wellhead automatic sampling device is provided, which comprises: a sampling cavity, a pollution cavity, a sampling electromagnetic valve, a pollution electromagnetic valve, and a control panel in communication connection with the sampling electromagnetic valve and the pollution electromagnetic valve, the sampling cavity and the pollution cavity are connected with the production pipeline through the sampling pipeline and the pollution pipeline respectively, and the sampling electromagnetic valve and the pollution electromagnetic valve are arranged on the sampling pipeline and the pollution pipeline respectively.

[0005] In a preferred embodiment, the wellhead automatic sampling device further comprises: an exhaust electromagnetic valve in communication connection with the control panel, the sampling cavity and the pollution cavity are connected with the exhaust pipeline, and the exhaust electromagnetic valve is arranged on the exhaust pipeline.

[0006] In a preferred embodiment, the exhaust pipeline is connected with the sampling cavity and the pollution cavity respectively at the top of the sampling cavity and the pollution cavity.

[0007] In a preferred embodiment, the sampling cavity is provided with a sampling ball valve at the sampling port at the bottom thereof.

[0008] In a preferred embodiment, the wellhead automatic sampling device further comprises a shell, and the pollution cavity and the sampling cavity are integrated in the shell.

[0009] In a preferred embodiment, the pollution cavity is arranged adjacent to the sampling cavity at the side of the sampling cavity.

[0010] In a preferred embodiment, a plurality of support legs are connected to the bottom surface of the housing.

[0011] In a preferred embodiment, the wellhead automatic sampling device further comprises a liquid level meter in communication with the control panel, the liquid level meter being disposed on the outer side surface of the housing and used for measuring the volume of liquid sample in the sampling cavity.

[0012] In a preferred embodiment, the exhaust pipeline, the exhaust solenoid valve, the sampling solenoid valve, the blowdown solenoid valve, the sampling pipeline and the blowdown pipeline are all disposed outside the housing.

[0013] In a preferred embodiment, the sampling pipeline is in communication with the interior of the sampling cavity at the side of the sampling cavity, and the blowdown pipeline is in communication with the interior of the blowdown cavity at the side of the blowdown cavity.

[0014] The present application has at least the following technical effects:

[0015] According to the present application, the sampling cavity, the blowdown cavity, the sampling solenoid valve, the blowdown solenoid valve and the control panel in communication with the sampling solenoid valve and the blowdown solenoid valve are provided. Since the sampling cavity and the blowdown cavity are connected with the production pipeline through the sampling pipeline and the blowdown pipeline respectively, and the sampling solenoid valve and the blowdown solenoid valve are disposed on the sampling pipeline and the blowdown pipeline respectively, on the one hand, automatic blowdown and sampling can be realized through the control panel, the contact time of the operator with the sample is reduced, and the sampling timeliness is improved; on the other hand, by providing the blowdown cavity, the taken liquid sample is more in line with the experimental requirements, and the data obtained by experimental analysis is more accurate.

[0016] According to the present application, the exhaust solenoid valve in communication with the control panel is provided. Since the sampling cavity and the blowdown cavity are both connected with the exhaust pipeline, and the exhaust solenoid valve is disposed on the exhaust pipeline, after the oil gas fills the blowdown cavity and the sampling cavity, it can be discharged from the exhaust pipeline, the control panel controls the opening of the exhaust solenoid valve, and the gas inside the sampling cavity and the blowdown cavity is discharged, so that high pressure can be avoided in the sampling cavity and the blowdown cavity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A perspective structural schematic view of a wellhead automatic sampling device according to an embodiment of the present application is schematically shown;

[0018] Figure 2 A cross-sectional structural schematic view of the wellhead automatic sampling device according to an embodiment of the present application is schematically shown.

[0019] In the present application, all the drawings are schematic drawings, which are only used for explaining the principles of the present application and are not drawn according to the actual proportions. DETAILED DESCRIPTION

[0020] The technical solutions of the utility model will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the utility model, but not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] In the description of the utility model, it should be understood that the terms "outer", "inner" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0022] In the utility model, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For the ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0023] As shown in Figure 1 and Figure 2 The wellhead automatic sampling device 100 disclosed by the utility model comprises a sampling cavity 1, a pollution discharge cavity 2, a sampling electromagnetic valve 5, a pollution discharge electromagnetic valve 6 and a control panel 3 in communication connection with the sampling electromagnetic valve 5 and the pollution discharge electromagnetic valve 6, the sampling cavity 1 and the pollution discharge cavity 2 are connected with a production pipeline (not shown in the drawing) through a sampling pipeline a and a pollution discharge pipeline b respectively, the production pipeline is communicated to the oil and gas source in the well, and the sampling electromagnetic valve 5 and the pollution discharge electromagnetic valve 6 are arranged on the sampling pipeline a and the pollution discharge pipeline b respectively.

[0024] During sampling, the control panel 3 first controls the opening of the pollution discharge electromagnetic valve 6, so that the oil and gas from the wellhead production pipeline enters the pollution discharge cavity 2 first. After a certain time (about 3s), the control panel 3 controls the closing of the pollution discharge electromagnetic valve 6 and the opening of the sampling electromagnetic valve 5, so that the oil and gas enters the sampling cavity 1. When the volume or mass of the liquid sample in the sampling cavity 1 reaches the set value, the control panel 3 controls the closing of the sampling electromagnetic valve 5. The operator opens the sampling port at the bottom of the sampling cavity 1 and connects the liquid sample into the liquid sample container.

[0025] According to the utility model, provide sampling cavity 1, pollution discharge cavity 2, sampling electromagnetic valve 5, pollution discharge electromagnetic valve 6 and with sampling electromagnetic valve 5, pollution discharge electromagnetic valve 6 all communication connection's control panel 3. Since sampling cavity 1 and pollution discharge cavity 2 are connected with production pipeline through sampling pipeline a and pollution discharge pipeline b respectively, sampling electromagnetic valve 5 and pollution discharge electromagnetic valve 6 are arranged on sampling pipeline a and pollution discharge pipeline b respectively, thereby on one hand can realize automatic pollution discharge, sampling through control panel 3, reduce the operation personnel and sample contact time, improve sampling time limit simultaneously, on the other hand, by setting pollution discharge cavity, make the liquid sample taken more meet the experimental requirement, make the data obtained by experiment analysis more accurate.

[0026] In one or more embodiments, the wellhead automatic sampling device 100 further comprises an exhaust electromagnetic valve 7 connected to the control panel 3, the sampling cavity 1 and the pollution discharge cavity 2 are connected to the exhaust pipeline c, and the exhaust electromagnetic valve 7 is arranged on the exhaust pipeline c. After the oil and gas fills the pollution discharge cavity 2 and the sampling cavity 1, they can be discharged from the exhaust pipeline c. The control panel 3 controls the exhaust electromagnetic valve 7 to open, which is used to discharge the gas inside the sampling cavity 1 and the pollution discharge cavity 2, thereby avoiding the formation of high pressure inside the sampling cavity 1 and the pollution discharge cavity 2. It should be noted that when the volume or mass of the liquid sample in the sampling cavity 1 reaches the set value, the control panel 3 controls the sampling electromagnetic valve 5 and the exhaust electromagnetic valve 7 to close. The operator opens the sampling port at the bottom of the sampling cavity 1 and connects the liquid sample to the liquid sample container.

[0027] In one or more embodiments, the exhaust pipeline c is connected to the sampling cavity 1 and the pollution discharge cavity 2 at the top of the sampling cavity 1 and the pollution discharge cavity 2 respectively, thereby facilitating the discharge of gas in the fluid. The exhaust pipeline c is connected to an external venting pipeline (not shown in the figure).

[0028] In one or more embodiments, the wellhead automatic sampling device 100 further comprises a liquid level meter 4 connected to the control panel 3, and the liquid level meter 4 is arranged on the surface of the outer side of the housing 8, which is used to measure the volume of the liquid sample in the sampling cavity 1.

[0029] In one or more embodiments, the sampling cavity 1 is provided with a sampling ball valve 6 at the sampling port at the bottom. Optionally, the sampling ball valve 6 can be a manual sampling valve.

[0030] In one or more embodiments, the wellhead automatic sampling device 100 further comprises a housing 8, and the pollution discharge cavity 2 and the sampling cavity 1 are integrated in the housing 8. The control panel 3 is arranged on the surface of the outer side of the housing 8.

[0031] In one or more embodiments, the pollution discharge cavity 2 is arranged adjacent to the sampling cavity 1 at the side of the sampling cavity 1.

[0032] In one or more embodiments, a plurality of support legs 9 are connected to the bottom surface of the housing 8.

[0033] In one or more embodiments, the sampling conduit a communicates the interior of the sampling chamber 1 with the side of the sampling chamber 1, and the blowdown conduit b communicates the interior of the blowdown chamber 2 with the side of the blowdown chamber 2.

[0034] In one or more embodiments, the sampling conduit a, the blowdown conduit b, the vent line c, the sampling solenoid valve 5, the blowdown solenoid valve 6, and the vent solenoid valve 7 are all disposed outside of the housing 8, facilitating management and maintenance.

[0035] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to the application without departing from the scope thereof. In particular, individual features mentioned in each of the embodiments can be combined together in any way, provided that there is no structural conflict. The present application is not limited to the particular embodiments disclosed herein but includes all technical solutions falling within the scope of the claims.

Claims

1. A wellhead automatic sampling device, characterized by, The sampling cavity, the blowdown cavity, a sampling electromagnetic valve, a blowdown electromagnetic valve, and a control panel in communication with the sampling electromagnetic valve and the blowdown electromagnetic valve are included.

2. The automatic wellhead sampling device of claim 1, wherein, Further comprising: An exhaust electromagnetic valve in communication with the control panel, the sampling cavity and the blowdown cavity are connected with an exhaust pipeline, and the exhaust electromagnetic valve is arranged on the exhaust pipeline.

3. The wellhead autosampler of claim 2, wherein, The exhaust pipeline is connected with the sampling cavity and the blowdown cavity at the top of the sampling cavity and the blowdown cavity respectively.

4. The wellhead autosampler of claim 1, wherein, The sampling cavity is provided with a sampling ball valve at the sampling port at the bottom of the sampling cavity.

5. The wellhead autosampler of claim 3, wherein, Further comprising a shell, and the blowdown cavity and the sampling cavity are integrated in the shell.

6. The wellhead autosampler of claim 5, wherein, The blowdown cavity is arranged adjacent to the sampling cavity at the side of the sampling cavity.

7. The wellhead autosampler of claim 5, wherein, A plurality of supporting legs are connected to the bottom surface of the shell.

8. The wellhead autosampler of claim 5, wherein, Further comprising a liquid level meter in communication with the control panel, the liquid level meter is arranged on the outer side surface of the shell, and is used for measuring the volume of the liquid sample in the sampling cavity.

9. The wellhead autosampler of claim 5, wherein, The exhaust pipeline, the exhaust electromagnetic valve, the sampling electromagnetic valve, the blowdown electromagnetic valve, the sampling pipeline and the blowdown pipeline are arranged outside the shell.

10. The wellhead autosampler of claim 1, wherein, The sampling pipeline is in communication with the inside of the sampling cavity at the side of the sampling cavity, and the blowdown pipeline is in communication with the inside of the blowdown cavity at the side of the blowdown cavity.

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