Single well gas-liquid separation crude oil metering and sampling device

Abstract

The utility model discloses a single well gas-liquid separation crude oil metering and sampling device which comprises a separation box, the separation box is used for separating gas and liquid in oil, gas and liquid, a collection box for collecting filtered impurities in the oil, gas and liquid is fixedly arranged on one side of the separation box, and a filtering assembly is installed on the side, close to the collection box, of the separation box and comprises a liquid inlet pipe. And the liquid inlet pipe is communicated and fixedly connected with the interior of the separation box. The driving motor is controlled to drive the worm to rotate, the worm gear rotates to drive the blocking pipe to rotate, the connecting rod rotates to drive the inner side cleaning brush to rotate along the filter screen, so that impurities blocked by the filter screen are scraped, and the blocking pipe drives the second discharging port to rotate in the rotating process until the second discharging port coincides with the first discharging pipe. At the moment, the liquid inlet pipe is communicated with the interior of the collecting box, and impurities in the liquid inlet pipe can fall into the collecting box to be collected, so that the water inlet pipe is dredged, and the filtering effect of the filter screen is improved.

Description

Technical Field

[0001] This utility model belongs to the field of crude oil sampling technology, and in particular relates to a single-well gas-liquid separation crude oil metering and sampling device. Background Technology

[0002] In the process of measurement on the surface of oil fields, most of them use flow meters as the measurement device for crude oil. As most of my country's oil fields enter the middle and late stages of exploitation, the production of single wells continues to decline. Without reliable flow meters, the pipelines of each oil well can only be aggregated in the station and measured by a single flow meter, making it impossible to know the production of each well.

[0003] A search revealed that patent CN205577971U discloses an oil production metering device that removes impurities before petroleum gas-liquid separation by setting up a filtration device. Furthermore, the purity and impurity removal rate of the petroleum can be observed by sampling. In addition, flow sensors are installed in both the inlet and outlet pipes of the separator to accurately determine the flow rate of the petroleum.

[0004] Although the aforementioned patents effectively improve the purity of petroleum during metering, the filter screen is prone to clogging of its surface pores due to long-term filtration of impurities, reducing the filtration effect of oil, gas, and liquid. At the same time, the filtered impurities accumulate inside the pipeline, affecting the subsequent transportation of oil, gas, and liquid and greatly reducing the separation efficiency. To address these issues, we have provided a single-well gas-liquid separation crude oil metering and sampling device. Summary of the Invention

[0005] The purpose of this invention is to provide a single-well gas-liquid separation crude oil metering and sampling device. It controls the drive motor to drive the worm gear to rotate, the worm wheel to rotate the sealing pipe, and the connecting rod to rotate the inner cleaning brush along the filter screen, thereby scraping away the impurities clogging the filter screen. During the rotation of the sealing pipe, the second discharge port is driven to rotate until the second discharge port coincides with the first discharge pipe. At this time, the liquid inlet pipe is connected to the inside of the collection box, and the impurities in the liquid inlet pipe can fall into the collection box for collection, thereby solving the technical defects in the above-mentioned background technology.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a single-well gas-liquid separation crude oil metering and sampling device, including a separation box, which is used to separate gas and liquid in oil, gas and liquid. A collection box for collecting filtered impurities in oil, gas and liquid is fixedly installed on one side of the separation box. A filter assembly is installed on the side of the separation box near the collection box, and the filter assembly is located at the top of the collection box. The filter assembly includes an inlet pipe, which is connected and fixedly connected to the inside of the separation box. An installation ring is fixedly installed inside the inlet pipe. A filter screen for filtering impurities in oil, gas and liquid is installed on the inner wall of the installation ring. A sealing pipe that rotates around the periphery of the inlet pipe and rotates with the inside of the collection box is rotatably installed.

[0007] The present invention is further configured such that an inclined plate is fixedly installed at the bottom of the separation box, and a filter plate for conveying gas is fixedly installed inside the separation box, the filter plate dividing the separation box into a gas collecting chamber and a liquid collecting chamber.

[0008] The present invention is further configured such that the gas collecting chamber is located above the filter plate, the liquid collecting chamber is located below the filter plate, and an outlet pipe connected to the interior of the gas collecting chamber is fixedly provided on one side of the gas collecting chamber, and a gas sampling bottle is threadedly connected to the peripheral side of the outlet pipe.

[0009] The present invention is further configured such that a liquid outlet pipe communicating with the inside of the liquid collection chamber is fixedly provided on one side of the liquid collection chamber, and a liquid sampling bottle is threadedly connected to the peripheral side of the liquid outlet pipe; two positioning plates are fixedly provided on the side of the separation box near the collection box, and a worm gear is rotatably provided between the two positioning plates, one end of the worm gear passing through to the outside of the corresponding positioning plate and fixedly connected to a drive motor.

[0010] The present invention is further configured such that a first discharge port is provided on the peripheral side of the liquid inlet pipe, the first discharge port is connected to the inside of the collection box, and a connecting pipe connected to the inside of the liquid inlet pipe is fixedly provided on one side of the liquid inlet pipe.

[0011] The present invention is further configured such that a second discharge port corresponding to the first discharge port is opened on the circumferential side of the sealing tube, and a worm wheel is fixedly provided on the circumferential side of the sealing tube, the worm wheel being adapted to the worm.

[0012] The present invention is further configured such that a connecting rod is fixedly provided on the inner wall of the sealing tube, and a cleaning brush is installed on the inner side of the connecting rod, and the cleaning brush is in contact with the surface of the filter screen;

[0013] The inlet pipe has a sliding opening on its peripheral side that corresponds to the connecting rod, and the connecting rod and the sliding opening are slidably engaged.

[0014] This utility model has the following beneficial effects: 1. This utility model controls the drive motor to drive the worm gear to rotate, the worm wheel to drive the sealing tube to rotate, and the connecting rod to drive the inner cleaning brush to rotate along the filter screen, thereby scraping away the impurities clogging the filter screen. During the rotation of the sealing tube, the second discharge port is driven to rotate until the second discharge port coincides with the first discharge pipe. At this time, the liquid inlet pipe is connected to the inside of the collection box, and the impurities in the liquid inlet pipe can fall into the collection box for collection. This process drives the discharge port to open during the cleaning of the filter screen, thereby collecting the impurities, thereby unclogging the water inlet pipe and improving the filtration effect of the filter screen.

[0015] 2. This utility model also utilizes the gravity of the liquid oil to cause it to fall into the liquid collection chamber, while the gas, due to its lower density, enters the gas collection chamber through the filter holes on the filter plate. The oil-laden gas impacts the filter plate and the inner wall of the gas collection chamber, thereby achieving separation. The liquid in the liquid collection chamber enters the liquid sampling bottle through the liquid outlet pipe along the inclined plate, and the gas in the gas collection chamber enters the gas sampling bottle through the gas outlet pipe, thus achieving automatic sampling of the separated liquid and gas. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a single-well gas-liquid separation crude oil metering and sampling device.

[0018] Figure 2 for Figure 1 Another structural diagram from a different angle.

[0019] Figure 3 for Figure 2 A structural sectional view.

[0020] Figure 4 for Figure 3 Another structural diagram from a different angle.

[0021] Figure 5 This is a schematic diagram of the filter assembly in this utility model.

[0022] Figure 6 This is a schematic diagram of the liquid inlet pipe in this utility model.

[0023] Figure 7 for Figure 6 The structural bottom view.

[0024] Figure 8 This is a schematic diagram of the sealing tube in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1-Separation box, 2-Collection box, 3-Filter assembly, 301-Inlet pipe, 302-Mounting ring, 303-Filter screen, 304-Sealing pipe, 305-First outlet, 306-Connecting pipe, 307-Second outlet, 308-Worm gear, 309-Connecting rod, 310-Sliding port, 4-Inclined plate, 5-Filter plate, 6-Gas collection chamber, 7-Liquid collection chamber, 8-Gas outlet pipe, 9-Gas sampling bottle, 10-Liquid outlet pipe, 11-Liquid sampling bottle, 12-Positioning plate, 13-Worm gear, 14-Drive motor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] For a specific implementation example, please refer to Implementation Example 1. Figure 1-8 This utility model is a single-well gas-liquid separation crude oil metering and sampling device, including a separation box 1, which is used to separate gas and liquid in oil, gas and liquid. A collection box 2 for collecting filtered impurities in oil, gas and liquid is fixedly installed on one side of the separation box 1. A filter assembly 3 is installed on the side of the separation box 1 near the collection box 2, and the filter assembly 3 is located on the top of the collection box 2.

[0029] Specifically, the filter assembly 3 includes an inlet pipe 301, which is connected and fixedly connected to the inside of the separation box 1. An installation ring 302 is fixedly installed inside the inlet pipe 301. A filter screen 303 for filtering impurities in oil, gas and liquid is installed on the inner wall of the installation ring 302. A sealing pipe 304 that rotates around the inlet pipe 301 and rotates with the inside of the collection box 2 is rotatably installed. A first discharge port 305 is opened on the circumference of the inlet pipe 301 and is connected to the inside of the collection box 2. A connecting pipe 306 that is connected to the inside of the inlet pipe 301 is fixedly installed on one side of the inlet pipe 301.

[0030] Furthermore, a second discharge port 307 corresponding to the first discharge port 305 is opened on the circumferential side of the sealing pipe 304. A worm gear 308 is fixedly installed on the circumferential side of the sealing pipe 304. In the initial state, the second discharge port 307 and the first discharge port 305 are in opposite positions. At this time, the liquid inlet pipe 301 is not connected to the inside of the collection box 2, and the oil, gas and liquid can only be transported along the liquid inlet pipe 301. A connecting rod 309 is fixedly installed on the inner wall of the sealing pipe 304. A cleaning brush is installed on the inner side of the connecting rod 309. The cleaning brush is in contact with the surface of the filter screen 303. A sliding port 310 corresponding to the connecting rod 309 is opened on the circumferential side of the liquid inlet pipe 301. The connecting rod 309 and the sliding port 310 slide together. The rotation of the sealing pipe 304 drives the connecting rod 309 to rotate along the sliding port 310.

[0031] In the second specific embodiment, based on the first specific embodiment, an inclined plate 4 is fixedly installed at the bottom of the separation box 1, and a filter plate 5 for conveying gas is fixedly installed inside the separation box 1. The filter plate 5 divides the separation box 1 into a gas collecting chamber 6 and a liquid collecting chamber 7. Oil, gas and liquid enter the separation box 1 through the filter screen 303. The liquid oil falls into the liquid collecting chamber 7 under its own gravity, while the gas, due to its lower density, enters the gas collecting chamber 6 along the filter holes on the filter plate 5. The gas carrying oil impacts the filter plate 5 and the inner wall of the gas collecting chamber 6, thereby achieving separation. The separated liquid falls into the liquid collecting chamber 7 along the filter holes in the filter plate 5.

[0032] Specifically, the gas collecting chamber 6 is located above the filter plate 5, the liquid collecting chamber 7 is located below the filter plate 5, and an outlet pipe 8 connected to the interior of the gas collecting chamber 6 is fixedly installed on one side of the gas collecting chamber 6. A gas sampling bottle 9 is threadedly connected to the periphery of the outlet pipe 8.

[0033] Furthermore, a liquid outlet pipe 10 is fixedly installed on one side of the gas-liquid collection chamber 7 and communicates with its interior. A liquid sampling bottle 11 is threadedly connected to the periphery of the liquid outlet pipe 10. One-way valves are installed inside both the gas outlet pipe 8 and the liquid outlet pipe 10. When it is necessary to sample pure liquid and gas, the one-way valves are opened. The liquid in the liquid collection chamber 7 enters the liquid sampling bottle 11 from the liquid outlet pipe 10 along the inclined plate 4, and the gas in the gas collection chamber 6 enters the gas sampling bottle 9 from the gas outlet pipe 8, thereby realizing the sampling of the separated liquid and gas. Two positioning plates 12 are fixedly installed on the side of the separation box 1 near the collection box 2. A worm gear 13 is rotatably installed between the two positioning plates 12. A worm wheel 308 is adapted to the worm gear 13. One end of the worm gear 13 passes through to the outside of the corresponding positioning plate 12 and is fixedly connected to a drive motor 14. The drive motor 14 is controlled to drive the worm gear 13 to rotate, and the rotation of the worm wheel 308 drives the sealing pipe 304 to rotate.

[0034] The working principle of this utility model is as follows: In the initial state, the second outlet 307 and the first outlet 305 are in opposite positions, and the one-way valves in the gas outlet pipe 8 and the liquid outlet pipe 10 are closed. Then, oil, gas, and liquid are introduced through the connecting pipe 306. The oil, gas, and liquid enter the separation box 1 through the filter screen 303. The filtered impurities remain in the liquid inlet pipe 1. The liquid oil falls into the liquid collection chamber 7 under its own gravity, while the gas, due to its lower density, enters the gas collection chamber 6 through the filter holes on the filter plate 5. The gas carrying oil impacts the filter plate 5 and the inner wall of the gas collection chamber 6, thereby achieving separation. The separated liquid falls into the liquid collection chamber 7 through the filter holes in the filter plate 5. Then, the one-way valve is opened, and the liquid in the liquid collection chamber 7 enters the liquid sampling bottle 1 from the liquid outlet pipe 10 along the inclined plate 4. Inside the gas collection chamber 6, the gas enters the gas sampling bottle 9 through the gas outlet pipe 8, achieving sampling of the separated liquid and gas. During the filtration process, the filter screen 303 is prone to clogging, and the filtered impurities accumulate in the liquid inlet pipe 1. At this time, the delivery of oil, gas, and liquid is stopped. Then, the drive motor 14 is controlled to drive the worm gear 13 to rotate, the worm wheel 308 rotates to drive the sealing pipe 304 to rotate, and the connecting rod 309 rotates to drive the inner cleaning brush to rotate along the filter screen 303, thereby scraping away the impurities clogging the filter screen 303. During the rotation of the sealing pipe 304, the second discharge port 307 rotates until the second discharge port 307 coincides with the first discharge pipe 305. At this time, the liquid inlet pipe 1 is connected to the inside of the collection box 2, and the impurities in the liquid inlet pipe 1 can fall into the collection box 2 for collection.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A single-well gas-liquid separation crude oil metering and sampling device, comprising a separation box (1), characterized in that: The separation box (1) is used to separate gas and liquid in oil, gas and liquid. A collection box (2) for collecting filtered impurities in oil, gas and liquid is fixedly installed on one side of the separation box (1). A filter assembly (3) is installed on the side of the separation box (1) near the collection box (2). The filter assembly (3) is located at the top of the collection box (2). The filter assembly (3) includes an inlet pipe (301). The inlet pipe (301) is connected to and fixedly connected to the inside of the separation box (1). An installation ring (302) is fixedly installed inside the inlet pipe (301). A filter screen (303) for filtering impurities in oil, gas and liquid is installed on the inner wall of the installation ring (302). A sealing pipe (304) that rotates and cooperates with the inside of the collection box (2) is rotatably installed on the periphery of the inlet pipe (301).

2. The single well gas and liquid separation crude oil metering and sampling device of claim 1, wherein, An inclined plate (4) is fixedly installed at the bottom of the separation box (1), and a filter plate (5) for conveying gas is fixedly installed inside the separation box (1). The filter plate (5) divides the separation box (1) into a gas collection chamber (6) and a liquid collection chamber (7).

3. The single well gas and liquid separation crude oil metering and sampling device of claim 2, wherein, The gas collecting chamber (6) is located above the filter plate (5), and the liquid collecting chamber (7) is located below the filter plate (5). A gas outlet pipe (8) is fixedly installed on one side of the gas collecting chamber (6) and communicates with its interior. A gas sampling bottle (9) is threadedly connected to the periphery of the gas outlet pipe (8).

4. The single well gas and liquid separation crude oil metering and sampling device of claim 3, wherein, The liquid collection chamber (7) is fixedly provided with an outlet pipe (10) that communicates with its interior. The outlet pipe (10) is threaded with a liquid sampling bottle (11) on its periphery. The separation box (1) is fixedly provided with two positioning plates (12) on the side near the collection box (2). A worm gear (13) is rotatably provided between the two positioning plates (12). One end of the worm gear (13) passes through to the outside of the corresponding positioning plate (12) and is fixedly connected to a drive motor (14).

5. The single well gas and liquid separation crude oil metering and sampling device of claim 4, wherein, The liquid inlet pipe (301) has a first discharge port (305) on its circumferential side. The first discharge port (305) is connected to the inside of the collection box (2). A connecting pipe (306) is fixedly installed on one side of the liquid inlet pipe (301) and is connected to the inside of the collection box (2).

6. The single well gas and liquid separation crude oil metering and sampling device of claim 5, wherein, The sealing tube (304) has a second discharge port (307) on its circumferential side, which corresponds to the first discharge port (305). A worm wheel (308) is fixedly provided on the circumferential side of the sealing tube (304), and the worm wheel (308) is adapted to the worm (13).

7. The single well gas and liquid separation crude oil metering and sampling device of claim 6, wherein, A connecting rod (309) is fixedly installed on the inner wall of the sealing tube (304). A cleaning brush is installed on the inner side of the connecting rod (309), and the cleaning brush is in contact with the surface of the filter screen (303). A sliding port (310) corresponding to the connecting rod (309) is opened on the peripheral side of the liquid inlet tube (301), and the connecting rod (309) and the sliding port (310) slide together.

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