Device and method for collecting and detecting gas in oil field production pipeline
By designing a gas collection and detection device for oilfield production pipelines, the problem of difficult detection of methane escape emissions in existing technologies has been solved, achieving rapid and accurate methane escape emission detection, supporting precise accounting of oil and gas extraction operations and the implementation of the "dual carbon" standard.
Patent Information
- Application Number
- CN202410968158.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2026-01-27
AI Technical Summary
The lack of effective gas collection devices in existing technologies makes it difficult to detect methane escape emissions, resulting in large errors in the calculation of methane escape emissions and failing to meet the accuracy requirements of oil and gas extraction operations.
Design a gas collection and detection device for oilfield production pipelines, including a gas collection shell and a gas collection bottle. It is connected to the oilfield production pipeline through a sealed connection and uses a portable gas detector to quickly detect methane content on site. The device is made of 304 stainless steel plate and has a simple and easy-to-use structure.
It enables rapid detection of methane escape emissions, provides accurate emission data, and provides a basis for oil and gas extraction and production activities and the establishment of a "dual carbon" standard measurement system, thereby improving the convenience and accuracy of detection.
Smart Images
Figure CN121409679A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of gas detection technology, and specifically relates to a gas collection and detection device and method for oilfield production pipelines. Background Technology
[0002] As a major gaseous pollutant in oil and gas production and a greenhouse gas with strong warming potential, the detection and accounting of escaped emissions of methane is the primary issue in the process of greenhouse gas control and emission reduction in China's oil and gas industry.
[0003] Currently, Chinese oilfields lack experience and data in on-site methane detection, necessitating the establishment of appropriate detection methods to obtain accurate data on methane escape emissions and accelerate methane emission detection in oilfields. In oil and gas extraction operations, methane escape emissions primarily occur in pipelines of wellhead equipment, single-well storage facilities, transfer stations, and combined stations. Currently, there are no corresponding gas sampling devices, making on-site measurements difficult and resulting in insufficient data. Consequently, methane escape emission calculations have remained reliant on factor methods, with unclear errors. Summary of the Invention
[0004] To address the aforementioned problems, the present invention aims to provide a gas collection and detection device and method for oilfield production pipelines. This device is installed at pipeline locations where methane escapes and is emitted, such as wellheads, single-well oil storage devices, transfer stations, and combined stations. By collecting gas and detecting methane content, it enables rapid on-site detection of methane escape emissions.
[0005] The technical solution of the present invention is as follows: a gas collection and detection device for oilfield production pipelines, comprising a gas collection shell, the gas collection shell comprising a first outer shell and a second outer shell, the first outer shell and the second outer shell being sealed together, an oilfield production pipeline passing through the middle of the connection between the two, a sealing strip being provided between the outer side of the oilfield production pipeline and the gas collection shell, a steel pipe being provided above the first outer shell, a gas collection bottle being connected to the end of the steel pipe, a detection port being provided on the gas collection bottle, and a detection port switch mechanism being installed on the detection port.
[0006] A pressure gauge and a shut-off valve are also sequentially installed on the steel pipe between the gas collection bottle and the first outer shell.
[0007] The detection port switching mechanism includes a rubber hose connected to the detection port, and the rubber hose is provided with a hose clamp.
[0008] The first outer shell and the second outer shell are respectively provided with hinges on both sides of the oilfield production pipeline at the connection point. The hinges and buckles are used to connect the first outer shell and the second outer shell.
[0009] Both the first outer shell and the second outer shell are made of 304 stainless steel plate, and the thickness of the 304 stainless steel plate is at least 2 mm.
[0010] The detection port has a diameter of 10mm, the steel pipe has a diameter of 15mm, and the gas collection bottle has a diameter of 80mm.
[0011] A method for collecting and detecting gas in oilfield production pipelines, using the oilfield production pipeline gas collection and detection device described above, includes the following steps: S1: The parts of the oilfield production pipeline to be inspected are sealed and connected using a first outer shell and a second outer shell; S2: Open the detection port through the detection port switch mechanism to allow gas to flow, and the gas collection bottle will start collecting gas. The opening time is 1 to 2 minutes. S3: Close the detection port using the detection port switch mechanism, wait for half a minute, then reopen the detection port and use a portable gas detector to perform a test at the detection port; S4: After the test is completed, open the first outer shell and the second outer shell, and remove the gas collection bottle to complete the gas collection.
[0012] The technical advantages of this invention are as follows: 1. By installing the device at wellheads, single-well oil storage units, transfer stations, and combined stations where methane escapes, this invention enables rapid on-site detection of methane escape emissions through gas collection and methane content testing. This provides a basis and reference for verifying and confirming the level of oil and gas extraction and production activities and emission factor data in oilfields, for enterprises to establish and improve the "dual carbon" standard measurement system implementation plan, and for compiling carbon emission quantification reports and verification processes; 2. This invention enables simultaneous gas collection and detection. The gas collecting shell seals leaking parts, allowing leaked gas to be collected into a gas collecting bottle. The gas collecting bottle is equipped with a detection port, which can be quickly opened for immediate detection using a portable gas detector, providing immediate and convenient data; 3. The device of this invention has a simple and refined structure, is easy to use, and is easy to operate.
[0013] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description
[0014] Figure 1 This is a front view of the structure of a gas collection and detection device for oilfield production pipelines according to an embodiment of the present invention.
[0015] Figure 2 This is a side view of the structure of a gas collection and detection device for oilfield production pipelines according to an embodiment of the present invention.
[0016] Attached reference numerals: 1-Oilfield production pipeline, 2-Gas collection shell, 3-Sealing strip, 4-Hinge, 5-Steel pipe, 6-Stop valve, 7-Pressure gauge, 8-Gas collection bottle, 9-Detection port, 21-First outer shell, 22-Second outer shell. Detailed Implementation Example 1
[0017] like Figure 1 , Figure 2 As shown, an oilfield production pipeline gas collection and detection device includes a gas collection shell 2, which includes a first shell 21 and a second shell 22. The first shell 21 and the second shell 22 are sealed together, and an oilfield production pipeline 1 passes through the middle of the connection between them. A sealing strip 3 is provided between the outer side of the oilfield production pipeline 1 and the gas collection shell 2. A steel pipe 5 is provided above the first shell 21, and a gas collection bottle 8 is connected to the end of the steel pipe 5. A detection port 9 is provided on the gas collection bottle 8, and a detection port switch mechanism is installed on the detection port 9.
[0018] In practical use, the present invention uses a first outer shell 21 and a second outer shell 22 to seal and connect the part of the oilfield production pipeline 1 to be inspected; the inspection port 9 is opened by the inspection port switch mechanism to allow gas flow, and the gas collection bottle 8 begins to collect gas, with the opening time being 1 to 2 minutes; the inspection port 9 is closed by the inspection port switch mechanism, and after standing for half a minute, the inspection port 9 is reopened, and a portable gas detector is used to detect at the inspection port 9; after the detection is completed, the first outer shell 21 and the second outer shell 22 are opened, and the gas collection bottle 8 is removed to complete the gas collection. This invention, installed at pipeline locations with methane escape emissions, such as wellheads, single-well oil storage devices, transfer stations, and combined stations, enables rapid on-site detection of methane escape emissions by collecting gas and detecting methane content. This provides a basis and reference for verifying and confirming oilfield oil and gas extraction and production activities and emission factor data, establishing and improving the "dual-carbon" standard measurement system implementation plan for enterprises, and compiling carbon emission quantification reports and verification processes. The invention allows for simultaneous gas collection and detection. The gas collecting shell seals leaks, collecting the leaked gas into a gas collecting bottle. The gas collecting bottle has a detection port; by quickly opening the port, a portable gas detector can be used for immediate detection, providing instant data—convenient and fast. Example 2
[0019] Preferably, based on Embodiment 1, in this embodiment, a pressure gauge 7 and a shut-off valve 6 are sequentially provided on the steel pipe 5 between the gas collection bottle 8 and the first outer shell 21.
[0020] In actual use, a pressure gauge 7 and a shut-off valve 6 are also sequentially installed on the steel pipe 5 between the gas collection bottle 8 and the first outer shell 21, for the collection, detection and control of gas. Example 3
[0021] Preferably, based on Embodiment 1 or Embodiment 2, in this embodiment, the detection port switching mechanism includes a rubber hose connected to the detection port 9, and the rubber hose is provided with a hose clamp.
[0022] In practical use, the detection port switching mechanism of this invention includes a rubber hose connected to the detection port 9, and a hose clamp is provided on the rubber hose. The detection port 9 is opened by the hose clamp to allow gas flow, the gas collection bottle 8 collects the gas, and a portable gas detector is used to detect it at the detection port 9, which is convenient and quick. Example 4
[0023] Preferably, based on Embodiment 1 or Embodiment 3, in this embodiment, the first outer shell 21 and the second outer shell 22 are respectively provided with hinges 4 on both sides of the oilfield production pipeline 1 at the connection point, and the hinges 4 cooperate with the buckles to realize the connection between the first outer shell 21 and the second outer shell 22.
[0024] In actual use, the first outer shell 21 and the second outer shell 22 of the present invention are respectively provided with hinges 4 on both sides of the oilfield production pipeline 1 at the connection point. The hinges 4 cooperate with the buckles to realize the connection between the first outer shell 21 and the second outer shell 22, which is simple and convenient to install. Example 5
[0025] Preferably, based on Embodiment 1 or Embodiment 4, in this embodiment, both the first outer shell 21 and the second outer shell 22 are made of 304 stainless steel plate, and the thickness of the 304 stainless steel plate is at least 2mm.
[0026] In actual use, the first outer shell 21 and the second outer shell 22 of the present invention are both made of 304 stainless steel plate, and the thickness of the 304 stainless steel plate is at least 2mm to ensure that the structural strength meets the usage requirements. Example 6
[0027] Preferably, based on Embodiment 1 or Embodiment 5, in this embodiment, the diameter of the detection port 9 is 10mm, the diameter of the steel pipe 5 is 15mm, and the diameter of the gas collection bottle 8 is 80mm.
[0028] In actual use, the detection port 9 of the present invention has a diameter of 10mm, the steel pipe 5 has a diameter of 15mm, and the gas collection bottle 8 has a diameter of 80mm, so as to realize the collection, detection and control of gas. Example 7
[0029] A method for collecting and detecting gas in oilfield production pipelines, using the oilfield production pipeline gas collection and detection device described above, includes the following steps: S1: The part of the oilfield production pipeline 1 to be inspected is sealed and connected by the first outer shell 21 and the second outer shell 22; S2: Open the detection port 9 through the detection port switch mechanism to allow gas to flow. Gas collection bottle 8 will start collecting gas. The opening time is 1 to 2 minutes. S3: Close the detection port 9 using the detection port switch mechanism, wait for half a minute, and then reopen the detection port 9. Use a portable gas detector to perform a test at the detection port 9. S4: After the test is completed, open the first outer shell 21 and the second outer shell 22, and remove the gas collection bottle 8 to complete the gas collection.
[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A gas collection and detection device for oilfield production pipelines, characterized in that: The gas collection shell (2) includes a first shell body (21) and a second shell body (22). The first shell body (21) and the second shell body (22) are sealed together. An oilfield production pipeline (1) passes through the middle of the connection between the two. A sealing strip (3) is provided between the outside of the oilfield production pipeline (1) and the gas collection shell (2). A steel pipe (5) is provided above the first shell body (21). A gas collection bottle (8) is connected to the end of the steel pipe (5). A detection port (9) is provided on the gas collection bottle (8). A detection port switch mechanism is installed on the detection port (9).
2. The gas collection and detection device for oilfield production pipelines according to claim 1, characterized in that: A pressure gauge (7) and a shut-off valve (6) are also installed in sequence on the steel pipe (5) between the gas collection bottle (8) and the first outer shell (21).
3. The gas collection and detection device for oilfield production pipelines according to claim 1, characterized in that: The detection port switching mechanism includes a rubber hose connected to the detection port (9), and the rubber hose is provided with a pipe clamp.
4. The gas collection and detection device for oilfield production pipelines according to claim 1, characterized in that: The first outer shell (21) and the second outer shell (22) are respectively provided with hinges (4) on both sides of the oilfield production pipeline (1) at the connection point. The hinges (4) cooperate with the buckles to realize the connection between the first outer shell (21) and the second outer shell (22).
5. The gas collection and detection device for oilfield production pipelines according to claim 1, characterized in that: The first outer shell (21) and the second outer shell (22) are both made of 304 stainless steel plate, and the thickness of the 304 stainless steel plate is at least 2 mm.
6. The gas collection and detection device for oilfield production pipelines according to claim 1, characterized in that: The detection port (9) has a diameter of 10 mm, the steel pipe (5) has a diameter of 15 mm, and the gas collection bottle (8) has a diameter of 80 mm.
7. A method for collecting and detecting gas in oilfield production pipelines, using the gas collection and detection device for oilfield production pipelines as described in claim 1, characterized in that: Includes the following steps: S1: The part of the oilfield production pipeline (1) to be inspected is sealed and connected by the first outer shell (21) and the second outer shell (22); S2: Open the detection port (9) through the detection port switch mechanism to allow gas to flow. The gas collection bottle (8) will start collecting gas. The opening time is 1 to 2 minutes. S3: Close the detection port (9) through the detection port switch mechanism, wait for half a minute, and then reopen the detection port (9). Use a portable gas detector to perform a test at the detection port (9). S4: After the test is completed, open the first outer shell (21) and the second outer shell (22), and remove the gas collection bottle (8) to complete the gas collection.