A gas-liquid separation type crude oil production medium flow metering device

Abstract

The utility model discloses a kind of gas-liquid separation type crude oil exploitation medium flow metering devices, it is related to oil-gas-water three-phase fluid measurement technical field, including base, the top of base is provided with gas-liquid filter separator and mixed medium metering mechanism, the gas-liquid filter separator is located in one side of mixed medium metering mechanism, the mixed medium metering mechanism includes gas metering assembly and liquid metering assembly, the gas metering assembly is connected with the upper end of gas-liquid filter separator, and real-time metering separated gas medium, the liquid metering assembly is communicated with the bottom of gas-liquid filter separator, the utility model carries out real-time detection to the flow rate flow of complex working condition liquid in pipeline, the water content of oil and gas volume by multiple sensing technology, and detected data is handled in real time by PLC to be calculated in real time, to obtain the oil content, water content, gas content of oil well, to provide data support for the calculation of exploitation amount in exploitation early stage.

Description

Technical Field

[0001] This utility model relates to the field of three-phase fluid measurement technology of oil, gas and water, specifically a gas-liquid separation crude oil extraction medium flow metering device. Background Technology

[0002] In oil production, accurate monitoring and efficient recovery of the three phases of oil, water, and gas are the core links connecting "underground reservoir development" and "surface production management." This not only determines the potential for improving reservoir recovery rate, but also directly affects the energy consumption, cost, and environmental compliance of surface production. Furthermore, it provides the underlying data support for the digital and intelligent transformation of oilfields.

[0003] The main media involved in crude oil extraction include oil, water, natural gas, and other impurities. Currently, it is impossible to measure the various media in oil wells in real time during crude oil extraction. Accurate data can only be obtained by weighing during refining, which is a long process. Weighing equipment is also quite bulky and cannot calculate the amount of oil, water, and gas resources in the well. In the early stages of extraction, it is impossible to calculate the extraction volume, as there is no data to support it. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a gas-liquid separation crude oil extraction medium flow metering device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas-liquid separation type crude oil extraction medium flow metering device, including a base, a gas-liquid filter separator and a mixing medium metering mechanism are provided on the top of the base, the gas-liquid filter separator is located on one side of the mixing medium metering mechanism, the mixing medium metering mechanism includes a gas metering component and a liquid metering component, the gas metering component is connected to the upper end of the gas-liquid filter separator and measures the separated gas medium in real time, the liquid metering component is connected to the bottom of the gas-liquid filter separator and measures the separated liquid medium in real time.

[0006] As described above, the gas-liquid filter separator has a medium inlet at its lower end on the side away from the mixing medium metering mechanism, and a gas discharge pipe at its upper end on the side of the gas-liquid filter separator closer to the mixing medium metering mechanism. A liquid discharge pipe is provided at the bottom of the gas-liquid filter separator.

[0007] As described above, the gas metering component includes a gas pipeline, one end of which is connected to a gas discharge pipe. A PLC control cabinet is installed on the gas pipeline, and a first gas flow meter connected to the gas pipeline is installed inside the PLC control cabinet.

[0008] The liquid metering component described above includes a liquid storage flow stabilizer, and the liquid discharge pipe is connected to the liquid storage flow stabilizer. The upper end of the liquid storage flow stabilizer has a radar level gauge, an oil-water analyzer, and a drain pipe. The oil-water analyzer is located between the radar level gauge and the drain pipe.

[0009] As described above, the end of the vent pipe away from the liquid storage flow stabilizer is connected to a second gas flow meter, and the end of the second gas flow meter away from the vent pipe is connected to a gas pipeline.

[0010] As described above, an electric valve is provided at the end of the liquid storage flow stabilizer away from the liquid discharge pipe, and a medium discharge pipe is provided at the end of the electric valve away from the liquid storage flow stabilizer.

[0011] As described above, the end of the gas pipeline furthest from the gas discharge pipe is connected to the medium discharge pipe.

[0012] As mentioned above, a turbine flow meter is installed on the input pipe of the liquid storage flow stabilizer near the liquid discharge pipe.

[0013] Compared with existing technologies, this gas-liquid separation crude oil extraction medium flow metering device has the following advantages:

[0014] I. This utility model uses multiple sensing technologies to detect the flow rate and volume of liquids, the water content of oil, and the amount of gas in complex working conditions within pipelines in real time. The detected data is then processed in real time by a PLC to obtain the oil, water, and gas content of the oil well, thus providing data support for calculating the extraction volume in the early stages of mining.

[0015] Second, this utility model can operate in all weather conditions, which greatly improves accuracy and provides reliable data support for subsequent refining.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a front view of the present utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 This is a bottom view of the present invention.

[0021] In the diagram: 1. Base; 2. Gas-liquid filter separator; 3. Medium inlet; 4. Gas outlet pipe; 5. Liquid outlet pipe; 6. Gas pipeline; 7. PLC control cabinet; 8. First gas flow meter; 9. Liquid storage flow stabilizer; 10. Radar level gauge; 11. Turbine flow meter; 12. Oil-water analyzer; 13. Drain pipe; 14. Second gas flow meter; 15. Electric valve; 16. Medium outlet pipe. Detailed Implementation

[0022] 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.

[0023] like Figure 1-4 As shown, this utility model provides a technical solution: a gas-liquid separation type crude oil extraction medium flow metering device, including a base 1, a gas-liquid filter separator 2 and a mixing medium metering mechanism are arranged on the top of the base 1, the gas-liquid filter separator 2 is located on one side of the mixing medium metering mechanism, the mixing medium metering mechanism includes a gas metering component and a liquid metering component, the gas metering component is connected to the upper end of the gas-liquid filter separator 2 and measures the separated gas medium in real time, the liquid metering component is connected to the bottom of the gas-liquid filter separator 2 and measures the separated liquid medium in real time.

[0024] A medium inlet 3 is provided at the lower end of the gas-liquid filter separator 2 on the side away from the mixing medium metering mechanism, and a gas discharge pipe 4 is provided at the upper end of the gas-liquid filter separator 2 on the side close to the mixing medium metering mechanism. A liquid discharge pipe 5 is provided at the bottom of the gas-liquid filter separator 2.

[0025] The mixed medium extracted from the oil well enters the gas-liquid filter separator 2 through the medium inlet 3. The gas-liquid filter separator 2 separates the mixed medium into gas and liquid. The separated gas is at the upper end of the gas-liquid filter separator 2 and is discharged through the gas discharge pipe 4. The separated liquid is at the bottom of the gas-liquid filter separator 2 and is discharged through the liquid discharge pipe 5.

[0026] like Figure 1 , 2 As shown, the gas metering component includes a gas pipeline 6, one end of which is connected to a gas discharge pipe 4. A PLC control cabinet 7 is installed on the gas pipeline 6. A first gas flow meter 8, which is connected to the gas pipeline 6, is installed inside the PLC control cabinet 7. After the separated gas enters the gas pipeline 6, it passes through the first gas flow meter 8, thereby detecting the flow rate of the separated gas through the first gas flow meter 8.

[0027] The gas pipeline 6 is also equipped with a pressure sensor and a temperature sensor, and the flow rate, pressure and temperature of the separated gas are measured by the first gas flow meter 8, the pressure sensor and the temperature sensor.

[0028] The PLC control cabinet 7 houses a PLC controller. The pressure sensor, temperature sensor, and first gas flow meter 8 are all electrically connected to the PLC controller. The cabinet door of the PLC control cabinet 7 also has a display screen. The AI ​​module in the PLC controller converts the received pressure, temperature, and gas flow signals into PLC digital quantities. Then, the PLC program in the PLC controller converts the digital quantities into actual physical quantities. Finally, the display screen reads the physical quantities and displays the pressure, temperature, and gas flow values ​​through the connection with the PLC controller.

[0029] The liquid metering assembly includes a liquid storage stabilizer 9, a liquid discharge pipe 5 connected to the liquid storage stabilizer 9, and a radar level gauge 10, an oil-water analyzer 12 and an empty pipe 13 at the upper end of the liquid storage stabilizer 9. The oil-water analyzer 12 is located between the radar level gauge 10 and the empty pipe 13.

[0030] The radar level gauge 10, oil-water analyzer 12, and second gas flow meter 14 are also electrically connected to the PLC controller to realize real-time monitoring of the liquid level, water content, and gas flow rate in the liquid storage stabilizer 9.

[0031] A turbine flow meter 11 is installed on the input pipe of the liquid storage flow stabilizer 9 near the liquid discharge pipe 5. The turbine flow meter 11 is electrically connected to the PLC controller. The turbine flow meter 11 detects the inflow of the liquid storage flow stabilizer 9 in real time and feeds it back to the PLC controller. The PLC controller compares the flow value detected by the turbine flow meter 11 with the flow value calculated based on the liquid level height detected by the radar level gauge 10 per unit time, thereby calibrating the feed flow of the liquid storage flow stabilizer 9 and avoiding flow measurement errors caused by the failure of a single device.

[0032] The end of the vent pipe 13 away from the liquid storage flow stabilizer 9 is connected to a second gas flow meter 14. The end of the second gas flow meter 14 away from the vent pipe 13 is connected to the gas pipeline 6. The vent pipe 13 is used to discharge a small amount of gas that has entered the liquid storage flow stabilizer 9, and the flow rate of the gas discharged from the vent pipe 13 is monitored by the second gas flow meter 14.

[0033] like Figure 1 , 2 As shown, an electric valve 15 is provided at the end of the liquid storage flow stabilizer 9 away from the liquid discharge pipe 5, and a medium discharge pipe 16 is provided at the end of the electric valve 15 away from the liquid storage flow stabilizer 9.

[0034] The electric valve 15 is electrically connected to the PLC controller. The liquid level height detected by the radar level gauge 10 is fed back to the PLC controller. The PLC controller then compares the liquid level height value with the set liquid level height value. When the set liquid level height value is reached, the electric valve 15 is controlled to open. When the set liquid level height value is not reached, the electric valve 15 is controlled to remain closed. This allows the metering device to be used in gas wells with very low liquid volume.

[0035] The end of the gas pipeline 6 away from the gas discharge pipe 4 is connected to the medium discharge pipe 16. The metered gas and liquid media flow into the medium discharge pipe 16 and are discharged uniformly by the medium discharge pipe 16 before entering the next stage.

[0036] Working Principle: In operation, the mixed medium extracted from the oil well first enters the gas-liquid filter separator 2 through the medium inlet 3. The gas-liquid filter separator 2 separates the mixed medium into gas and liquid components. The separated gas is located at the upper end of the gas-liquid filter separator 2 and is discharged through the gas outlet pipe 4. The separated liquid is located at the bottom of the gas-liquid filter separator 2 and is discharged through the liquid outlet pipe 5. The separated gas enters the gas pipeline 6 through the gas outlet pipe 4. Simultaneously, the flow rate of the separated gas is detected by the first gas flow meter 8 and fed back to the PLC controller. The separated liquid enters the liquid storage and flow stabilizer 9 through the liquid outlet pipe 5. The height of the liquid level rise in the liquid storage and flow stabilizer 9 is detected by the radar level gauge 10 and fed back to the PLC controller, thereby calculating the rate of liquid level rise per unit time, and subsequently calculating... The flow rate of the liquid is measured, and the water content in the liquid is detected in real time by the oil-water analyzer 12. This information is also fed back to the PLC controller. Based on the flow rate and water content of the liquid, the amount of water and oil in the liquid is calculated. In addition, a small amount of gas will enter the liquid storage flow stabilizer 9 and be discharged through the vent pipe 13 above the liquid storage flow stabilizer 9. During the discharge, the flow rate of the gas discharged from the vent pipe 13 is detected by the second gas flow meter 14 and fed back to the PLC controller. Therefore, the sum of the measurements of the first gas flow meter 8 and the second gas flow meter 14 is the amount of gas in the mixed medium, thereby obtaining the oil, water and gas content of the mixed medium. Finally, the measured gas and liquid media flow into the medium discharge pipe 16 and are discharged uniformly through the medium discharge pipe 16 before entering the next stage.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid separation type crude oil extraction medium flow metering device, comprising a base (1), characterized in that: The top of the base (1) is provided with a gas-liquid filter separator (2) and a mixing medium metering mechanism. The gas-liquid filter separator (2) is located on one side of the mixing medium metering mechanism. The mixing medium metering mechanism includes a gas metering component and a liquid metering component. The gas metering component is connected to the upper end of the gas-liquid filter separator (2) and measures the separated gas medium in real time. The liquid metering component is connected to the bottom of the gas-liquid filter separator (2) and measures the separated liquid medium in real time.

2. The gas-liquid separation type crude oil extraction medium flow metering device according to claim 1, characterized in that: The gas-liquid filter separator (2) has a medium inlet (3) at the lower end of the side away from the mixing medium metering mechanism, and a gas discharge pipe (4) at the upper end of the side of the gas-liquid filter separator (2) close to the mixing medium metering mechanism. A liquid discharge pipe (5) is provided at the bottom of the gas-liquid filter separator (2).

3. The gas-liquid separation type crude oil extraction medium flow metering device according to claim 2, characterized in that: The gas metering component includes a gas pipe (6), one end of which is connected to a gas discharge pipe (4). A PLC control cabinet (7) is installed on the gas pipe (6), and a first gas flow meter (8) connected to the gas pipe (6) is installed inside the PLC control cabinet (7).

4. The gas-liquid separation type crude oil extraction medium flow metering device according to claim 3, characterized in that: The liquid metering assembly includes a liquid storage stabilizer (9), and the liquid discharge pipe (5) is connected to the liquid storage stabilizer (9). The upper end of the liquid storage stabilizer (9) has a radar level gauge (10), an oil-water analyzer (12), and a drain pipe (13). The oil-water analyzer (12) is located between the radar level gauge (10) and the drain pipe (13).

5. A gas-liquid separation type crude oil extraction medium flow metering device according to claim 4, characterized in that: The end of the vent pipe (13) away from the liquid storage flow stabilizer (9) is connected to a second gas flow meter (14), and the end of the second gas flow meter (14) away from the vent pipe (13) is connected to a gas pipeline (6).

6. The gas-liquid separation type crude oil extraction medium flow metering device according to claim 4, characterized in that: An electric valve (15) is provided at the end of the liquid storage stabilizer (9) away from the liquid discharge pipe (5), and a medium discharge pipe (16) is provided at the end of the electric valve (15) away from the liquid storage stabilizer (9).

7. A gas-liquid separation type crude oil extraction medium flow metering device according to claim 6, characterized in that: The end of the gas pipe (6) away from the gas discharge pipe (4) is connected to the medium discharge pipe (16).

8. A gas-liquid separation type crude oil extraction medium flow metering device according to claim 6, characterized in that: A turbine flow meter (11) is installed on the input pipe of the liquid storage flow stabilizer (9) near the liquid discharge pipe (5).

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