A high pressure gas well liquid sampling device

Abstract

This utility model discloses a high-pressure gas well liquid sampling device, including a carrier body supporting a gas-liquid separator with a first chamber arranged vertically. The gas-liquid separator has a drain port at its bottom end communicating with the first chamber and a first exhaust port at its top end communicating with the first chamber. The gas-liquid separator also has an oil, gas, and water inlet communicating with the first chamber. It also includes a sampling section, which is detachably fixed to the carrier body and has an inlet port communicating with the drain port. The carrier body integrates the gas-liquid separator and the sampling section into the same structure, facilitating operation of the sampling device. In use, the gas-liquid separator separates the gas and liquid in a high-pressure oil, gas, and water mixture. The gas is discharged from the first exhaust port of the separator, and the liquid enters the sampling section from the drain port. The detachable and fixed sampling section to the carrier body enhances the flexibility of use during sampling.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid sampling devices in oil and gas fields, and specifically to a high-pressure gas well liquid sampling device. Background Technology

[0002] Sampling of liquids from high-pressure, high-gas-liquid-ratio, and high-sulfur oil and gas wells has always been a major challenge in the exploration and development of these wells. The traditional approach is to conduct open sampling at the data head location downstream. Due to the high sulfur content, sampling personnel must wear positive-pressure air respirators. When the liquid production is low, without a gas-liquid separation device, prolonged open sampling may not yield sufficient liquid samples. Furthermore, it can lead to the entire well site being filled with natural gas, which not only fails to meet sampling requirements but also poses certain safety risks.

[0003] Therefore, how to provide a high-pressure gas well liquid sampling device that improves the sampling efficiency of high-pressure gas wells to solve the above-mentioned defects has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To achieve the above objectives, this utility model provides a high-pressure gas well liquid sampling device. The specific technical solution is as follows: A high-pressure gas well liquid sampling device includes a carrier body that supports and fixes a gas-liquid separator having a first chamber inside. The first chamber of the gas-liquid separator is arranged vertically. The bottom end of the gas-liquid separator has a drain port communicating with the first chamber, and the top end has a first exhaust port communicating with the first chamber. The gas-liquid separator also has an oil, gas and water inlet communicating with the first chamber. It also includes a sampling part having a second chamber inside. The sampling part is detachably fixed to the carrier body. The sampling part has an inlet communicating with the second chamber, and the inlet is connected to the drain port.

[0005] Preferably, the top of the sampling section has a second exhaust port that communicates with the second chamber.

[0006] Preferably, the system also includes a common pipeline having an upstream inlet and a downstream outlet at both ends. The upstream inlet connects to a source providing high-pressure oil, gas, and water, and the downstream outlet serves as the main vent for the sampling device. A first valve is installed on the common pipeline. The portion of the common pipeline between the first valve and the upstream inlet is connected to the oil, gas, and water inlet via a pipeline equipped with a second valve. The portion of the common pipeline between the first valve and the downstream outlet is connected to the first vent via a pipeline equipped with a first check valve. The portion of the common pipeline between the first valve and the downstream outlet is connected to the second vent via a pipeline equipped with a second check valve.

[0007] Preferably, a first pressure relief valve is installed on the pipeline on which the first check valve is installed.

[0008] Preferably, a second pressure relief valve is installed on the pipeline in which the second check valve is installed.

[0009] Preferably, the second chamber of the sampling section is arranged vertically, the liquid inlet is opened at the bottom of the sampling section, the first chamber and the second chamber are at the same height in the vertical direction, and the sampling section is transparent.

[0010] Preferably, both the gas-liquid separator and the sampling section are bottle-shaped.

[0011] Preferably, the carrier is a cabinet, the gas-liquid separator is disposed inside the cabinet, and the sampling part is detachably disposed on the back of the cabinet.

[0012] Preferably, there are three sampling sections, one of which is a spare bottle and the other two are sampling bottles. The inlets of the two sampling bottles are connected to the outlet through a pipeline equipped with a third valve. The second exhaust ports of the two sampling bottles are connected to the portion of the common pipeline located between the first valve and the downstream outlet through a pipeline equipped with a fourth valve.

[0013] Preferably, all the pipelines are flexible hoses capable of withstanding high pressure.

[0014] The provided high-pressure gas well liquid sampling device has the following technical advantages: The carrier integrates the gas-liquid separator and the sampling unit into the same structure, which facilitates the operation of the sampling device. In use, the gas-liquid separator can separate the gas and liquid in the high-pressure oil-gas-water mixture. The gas is discharged from the first exhaust port of the separator, and the liquid enters the sampling unit from the drain port. The sampling unit is detachably fixed to the carrier, which can improve the flexibility of use in the sampling process.

[0015] Preferably, the top of the sampling section has a second exhaust port connected to the second chamber. This second exhaust port allows for continuous sampling, meaning the drain port of the gas-liquid separator remains continuously connected to the inlet of the sampling section. Thus, even if high-pressure gas enters the sampling section, it will be discharged through the second exhaust port. Alternatively, discontinuous sampling can be achieved. In this process, the connection between the drain port of the gas-liquid separator and the inlet of the sampling section is first disconnected. Once the bottom of the gas-liquid separator is full of liquid, the drain port of the gas-liquid separator is then reconnected to the inlet of the sampling section, draining the liquid from the gas-liquid separator to the sampling section. The choice between continuous and discontinuous sampling can be determined based on the actual operating conditions.

[0016] Preferably, a shared pipeline and a first valve are provided. When sampling is required, the first valve can be closed and the second valve can be slowly opened to allow high-pressure oil, gas and water to enter the gas-liquid separator. At the same time, part of the shared pipeline is used for the discharge of gas (gas in the gas-liquid separator and sampling section).

[0017] As a preferred option, the installation of first and second pressure relief valves allows for flexible adjustment of the pressure relief rate, thereby improving the safety of the entire sampling device during use.

[0018] Preferably, the second chamber of the sampling unit is arranged vertically, and the liquid inlet is located at the bottom of the sampling unit. The first chamber and the second chamber are at the same height in the vertical direction. The principle of U-tube can be used. The bottle of the sampling unit is transparent, so that the liquid level of both chambers can be known at all times.

[0019] Preferably, the sampling unit is detachably located on the back of the cabinet for easy observation.

[0020] As a preferred option, multiple sampling units are provided, including a backup unit, which speeds up the sampling process and allows for quick replacement of the sampling units. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a specific embodiment of a high-pressure gas well liquid sampling device provided by this utility model, wherein the left figure is a front view and the right figure is a rear view.

[0022] Figure 1 The labels in the attached figures are as follows: 1 Cabinet, 2 Gas-liquid separator, 3 Drain, 4 First exhaust port, 5 Oil, gas and water inlet, 6 Sampling section, 7 Liquid inlet, 8 Second exhaust port, 9 Common pipeline, 10 Upstream inlet, 11 Downstream outlet, 12 First valve, 13 Second valve, 14 First check valve, 15 Second check valve, 16 First pressure relief valve, 17 Second pressure relief valve, 18 Third valve, 19 Fourth valve. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a high-pressure gas well liquid sampling device proposed by this utility model, in conjunction with the accompanying drawings and specific embodiments, will provide further clarity. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0024] Combination Figure 1 This is a schematic diagram of a specific embodiment of a high-pressure gas well liquid sampling device provided by this utility model. The left figure is a view from the front and the right figure is a view from the rear. The flow direction of the first one-way valve 14 and the second one-way valve 15 is indicated by arrows, that is, the gas in the gas-liquid separator 2 and the sampling section 6 is discharged in one direction.

[0025] The provided high-pressure gas well liquid sampling device includes a carrier body that supports and fixes a gas-liquid separator 2 with a first chamber inside. The first chamber of the gas-liquid separator 2 is arranged vertically. The bottom end of the gas-liquid separator 2 has a drain port 3 connected to the first chamber, and the top end has a first exhaust port 4 connected to the first chamber. The gas-liquid separator 2 also has an oil, gas and water inlet 5 connected to the first chamber. It also includes a sampling part 6 with a second chamber inside. The sampling part 6 is detachably fixed to the carrier body. The sampling part 6 has an inlet 7 connected to the second chamber. The inlet 7 can be connected to the drain port 3.

[0026] The carrier integrates the gas-liquid separator 2 and the sampling unit 6 into the same structure, which facilitates the operation of the sampling device. In use, the gas-liquid separator 2 can separate the gas and liquid in the high-pressure oil-gas-water mixture. The gas is discharged from the first exhaust port 4 of the separator, and the liquid enters the sampling unit 6 from the drain port 3. The sampling unit 6 is detachably fixed to the carrier, which can improve the flexibility of use in the sampling process.

[0027] like Figure 1 As shown, the top of the sampling part 6 is provided with a second exhaust port 8 that communicates with the second chamber.

[0028] The top of the sampling section 6 is provided with a second exhaust port 8 that connects to the second chamber. This second exhaust port 8 enables continuous sampling, meaning the drain port 3 of the gas-liquid separator 2 remains continuously connected to the inlet port 7 of the sampling section 6. Thus, even if high-pressure gas enters the sampling section 6, it will be discharged through the second exhaust port 8. Alternatively, discontinuous sampling can also be achieved. In this process, the connection between the drain port 3 of the gas-liquid separator 2 and the inlet port 7 of the sampling section 6 is first disconnected. Once the bottom of the gas-liquid separator 2 is full of liquid, the drain port 3 of the gas-liquid separator 2 is then reconnected to the inlet port 7 of the sampling section 6, draining the liquid from the gas-liquid separator 2 into the sampling section 6. Continuous or discontinuous sampling can be determined based on the actual operating conditions.

[0029] In one specific implementation, such as Figure 1 As shown, it also includes a common pipeline 9, which has an upstream inlet 10 and a downstream outlet 11 at its two ends. The upstream inlet 10 is connected to the source of providing high-pressure oil, gas and water, and the downstream outlet 11 serves as the main exhaust port of the sampling device. A first valve 12 is installed on the common pipeline 9. The portion of the common pipeline 9 between the first valve 12 and the upstream inlet 10 is connected to the oil, gas and water inlet 5 through a pipeline with a second valve 13 installed. The portion of the common pipeline 9 between the first valve 12 and the downstream outlet 11 is connected to the first exhaust port 4 through a pipeline with a first check valve 14 installed. The portion of the common pipeline 9 between the first valve 12 and the downstream outlet 11 is connected to the second exhaust port 8 through a pipeline with a second check valve 15 installed.

[0030] A common pipeline 9 and a first valve 12 are set up on it. When sampling is required, the first valve 12 can be closed and the second valve 13 can be slowly opened to allow high-pressure oil, gas and water to enter the gas-liquid separator 2. At the same time, part of the common pipeline 9 is used for the discharge of gas (gas in the gas-liquid separator 2 and the sampling section 6).

[0031] like Figure 1 As shown, a first pressure relief valve 16 is installed on the pipeline where the first check valve 14 is installed. A second pressure relief valve 17 is installed on the pipeline where the second check valve 15 is installed.

[0032] The installation of first and second pressure relief valves allows for flexible adjustment of the pressure relief rate, enhancing the safety of the entire sampling device during use.

[0033] In one specific implementation, such as Figure 1 As shown, the second chamber of the sampling section 6 is arranged vertically, the liquid inlet 7 is opened at the bottom of the sampling section 6, the first chamber and the second chamber are at the same height in the vertical direction, and the sampling section 6 is transparent.

[0034] The second chamber of the sampling section 6 is arranged vertically, and the liquid inlet 7 is opened at the bottom of the sampling section 6. The first chamber and the second chamber are at the same height in the vertical direction. The principle of U-tube can be used. The bottle of the sampling section 6 is transparent, so the liquid level of both can be known at all times.

[0035] Both the gas-liquid separator 3 and the sampling unit 6 are bottle-shaped.

[0036] In one specific embodiment, the carrier is a cabinet 1, the gas-liquid separator 2 is disposed inside the cabinet 1, and the sampling part 6 is detachably disposed on the back of the cabinet 1.

[0037] The sampling unit 6 is detachably mounted on the back of the cabinet 1 for easy observation.

[0038] In one specific implementation, such as Figure 1 As shown, there are three sampling sections 6, one of which is a spare bottle and the other two are sampling bottles. The inlets of the two sampling bottles are connected to the outlet 3 through a pipeline equipped with a third valve 18. The second exhaust ports 8 of the two sampling bottles are connected to the portion of the common pipeline 9 located between the first valve 12 and the downstream outlet 11 through a pipeline equipped with a fourth valve 19.

[0039] Multiple sampling units 6 are provided, including a backup unit, which speeds up the sampling process and allows for quick replacement of the sampling units.

[0040] All of the pipelines are flexible hoses capable of withstanding high pressure.

[0041] The bottle-shaped sampling unit 6 is detachably mounted on the back of the cabinet 1. This can be achieved in various ways, such as by creating a groove on the cabinet 1 that matches the shape of the sampling unit 6, allowing the sampling unit to be stably inserted. In this case, a flexible hose is used for the pipeline to ensure that the normal flow of fluid is not affected. Of course, this is not the only possible installation method.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-pressure gas well liquid sampling device, characterized in that, The device includes a carrier that supports and fixes a gas-liquid separator having a first chamber inside. The first chamber of the gas-liquid separator is arranged vertically. The bottom end of the gas-liquid separator has a drain port communicating with the first chamber, and the top end has a first exhaust port communicating with the first chamber. The gas-liquid separator also has an oil-gas-water inlet communicating with the first chamber. It also includes a sampling part having a second chamber inside. The sampling part is detachably fixed to the carrier and has an inlet communicating with the second chamber. The inlet is connected to the drain port.

2. The high-pressure gas well liquid sampling device according to claim 1, characterized in that, The top of the sampling section has a second exhaust port that connects to the second chamber.

3. The high-pressure gas well liquid sampling device according to claim 2, characterized in that, It also includes a common pipeline having an upstream inlet and a downstream outlet at both ends. The upstream inlet is connected to a source providing high-pressure oil, gas, and water, and the downstream outlet serves as the main vent of the sampling device. A first valve is installed on the common pipeline. The portion of the common pipeline between the first valve and the upstream inlet is connected to the oil, gas, and water inlet via a pipeline equipped with a second valve. The portion of the common pipeline between the first valve and the downstream outlet is connected to the first vent via a pipeline equipped with a first check valve. The portion of the common pipeline between the first valve and the downstream outlet is connected to the second vent via a pipeline equipped with a second check valve.

4. The high-pressure gas well liquid sampling device according to claim 3, characterized in that, A first pressure relief valve is installed on the pipeline in which the first check valve is installed.

5. The high-pressure gas well liquid sampling device according to claim 3, characterized in that, A second pressure relief valve is installed on the pipeline in which the second check valve is installed.

6. The high-pressure gas well liquid sampling device according to claim 3, characterized in that, The second chamber of the sampling section is arranged vertically, the liquid inlet is opened at the bottom of the sampling section, the first chamber and the second chamber are at the same height in the vertical direction, and the sampling section is transparent.

7. The high-pressure gas well liquid sampling device according to claim 6, characterized in that, Both the gas-liquid separator and the sampling unit are bottle-shaped.

8. The high-pressure gas well liquid sampling device according to claim 7, characterized in that, The carrier is a cabinet, the gas-liquid separator is located inside the cabinet, and the sampling part is detachably located on the back of the cabinet.

9. The high-pressure gas well liquid sampling device according to claim 8, characterized in that, There are three sampling sections, one of which is a spare bottle, and the remaining two are sampling bottles. The inlets of the two sampling bottles are connected to the outlet through a pipeline equipped with a third valve. The second exhaust ports of the two sampling bottles are connected to the section of the common pipeline located between the first valve and the downstream outlet through a pipeline equipped with a fourth valve.

10. The high-pressure gas well liquid sampling device according to claim 9, characterized in that, All pipelines are flexible hoses capable of withstanding high pressure.

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