A multiphase flow rate calibration device

Abstract

This utility model discloses a multiphase flow calibration device, including a liquid storage unit, a pumping unit, an oil-water mixer, a lifting simulation platform mechanism, a gas supply system, a standard flow system, and a computer control system. The liquid storage unit is connected to the pumping unit via a manual gate valve and is connected to the oil-water mixer via the standard flow system. The outlet of the oil-water mixer is connected to the downstream standard flow system and a gas-liquid mixing pipeline. The gas supply system is connected to the gas-liquid mixing pipeline, and its output end is connected to the lifting simulation platform test pipeline. The output end of the gas-liquid separator is connected to the oil-water mixer to form a circulation. The lifting simulation platform mechanism simulates the multiphase flow pattern. The oil-water mixer integrates heating, mixing, and separation functions. The standard flow system ensures stable medium flow. This device has advantages such as automated control and medium recycling, meets the requirements for multiphase flow calibration, solves the problem of insufficient research on multiphase flow in inclined pipes, and adapts to the simulation requirements of complex well types in oil and gas extraction.

Description

Technical Field

[0001] This utility model relates to the field of petroleum engineering, specifically to a calibration device for multiphase flow of oil. Background Technology

[0002] Multiphase flow systems are increasingly involved in a wide range of natural and industrial processes, and their applications are becoming increasingly important. They have now become a cutting-edge discipline that receives significant attention both domestically and internationally. The wide range of applications of multiphase flow systems has promoted the rapid development of research in the field, and has also made the research on multiphase flow parameter detection technology of great significance.

[0003] Multiphase flow systems are complex nonlinear systems. Due to interfacial effects and relative velocities between phases, and the fact that phase interfaces are randomly variable in both time and space, their flow characteristics are far more complex than those of single-phase flow systems, resulting in a greater number of characteristic parameters. The randomness and complexity of multiphase flow make parameter testing very difficult. Therefore, it is necessary to design a multiphase flow calibration device to meet the calibration requirements of multiphase fluid parameters. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses a multiphase flow rate calibration device.

[0005] The specific technical solution is as follows:

[0006] A multiphase flow calibration device includes: two sets of liquid storage units arranged symmetrically at the top and bottom, a manual gate valve, a pumping unit, an oil-water mixer, a lifting simulation platform mechanism, a gas supply system, a standard flow system, and a computer control system.

[0007] The liquid storage unit is connected to the pumping unit via a manual gate valve. The pumping unit is connected to the standard flow system via a flange. The standard flow system is connected to the inlet of the oil-water mixer. The outlet of the oil-water mixer is connected to the downstream standard flow system and then to the gas-liquid mixing pipeline. The input end of the gas-liquid mixing pipeline is also connected to the gas supply system, and the output end is connected to the test pipeline of the lifting simulation platform mechanism. A gas-liquid separator is installed at the end of the test pipeline, and the output end of the gas-liquid separator is connected to the oil-water mixer.

[0008] The computer control system includes a PLC programmable logic controller and a distributed I / O module. It uses KingView configuration software to realize human-machine interaction and data processing to control the operation of the pumping unit, standard flow system, gas supply system and lifting simulation platform mechanism, and to collect flow, pressure and temperature data in real time.

[0009] The oil-water mixer is equipped with a heating device and is divided into a mixing chamber and a separation chamber by a partition. The separation chamber is equipped with multiple layers of baffles.

[0010] The gas supply system includes a gas storage tank, an air compressor, a refrigerated dryer, and a bell-shaped standard measuring instrument. The bell-shaped standard measuring instrument is connected to the gas-liquid mixing pipeline via an electric V-type regulating valve.

[0011] The standard flow system includes a mass flow meter, a pressure stabilizing vessel, a pneumatic switching valve, and an electric V-type regulating valve. The lengths of the straight pipe sections before and after the mass flow meter are not less than 10 times and 5 times the pipe diameter, respectively.

[0012] The advantages of this invention are: it integrates liquid storage, mixing, separation, detection, and control functions into one unit; the oil-water mixer has heating, mixing, and efficient separation capabilities; and with the gas supply system and standard flow system, it can achieve stable proportioning and flow control of gas, oil, and water three-phase media; the computer control system, combined with PLC and KingView configuration software, realizes automated logic control, real-time data acquisition, and intelligent adjustment of operating conditions; and through the closed-loop design of the gas-liquid separator and oil-water mixer, it achieves media recycling and reduces testing costs; in addition, the quick-installation visual glass tube section, in conjunction with a high-speed camera, supports the visual observation of multiphase flow patterns; and with the addition of online density meters, pressure transmitters, and other components, it provides a multifunctional, high-precision, and automated comprehensive solution for the functional testing and flow calibration of intelligent well completion tools, meeting the testing needs of future intelligent injection and production downhole tools. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0014] 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.

[0015] A multiphase flow rate calibration device, characterized in that it comprises: two sets of liquid storage units 1 arranged symmetrically at the top and bottom, a manual gate valve 2, a pumping unit 3, an oil-water mixer 8, a lifting simulation platform mechanism 9, a gas supply system, a standard flow system, and a computer control system 15.

[0016] The liquid storage unit 1 is connected to the pumping unit 3 via a manual gate valve 2. The pumping unit 3 is connected to the standard flow system via a flange. The standard flow system is connected to the inlet of the oil-water mixer 8. The outlet of the oil-water mixer 8 is connected to the downstream standard flow system and then to the gas-liquid mixing pipeline 12. The input end of the gas-liquid mixing pipeline 12 is also connected to the gas supply system 13, and the output end is connected to the test pipeline of the lifting simulation platform mechanism 9. A gas-liquid separator 11 is provided at the end of the test pipeline, and the output end of the gas-liquid separator 11 is connected to the oil-water mixer 8.

[0017] The computer control system 15 includes a PLC programmable logic controller and a distributed I / O module. It uses KingView configuration software to realize human-machine interaction and data processing to control the operation of the pumping unit 3, the standard flow system, the gas supply system 13 and the lifting simulation platform mechanism 9, and to collect flow, pressure and temperature data in real time.

[0018] The oil-water mixer 8 is equipped with a heating device and is divided into a mixing chamber and a separation chamber by a partition. The separation chamber is equipped with multiple layers of baffles.

[0019] The gas supply system 13 includes a gas storage tank, an air compressor, a refrigerated dryer 16, and a bell-shaped standard measuring instrument 14. The bell-shaped standard measuring instrument 14 is connected to the gas-liquid mixing pipeline 12 via an electric V-type regulating valve 7.

[0020] The standard flow system includes a mass flow meter 6, a pressure stabilizing vessel 4, a pneumatic switching valve 5, and an electric V-type regulating valve 7. The lengths of the straight pipe sections before and after the mass flow meter 6 are not less than 10 times and 5 times the pipe diameter, respectively.

[0021] The working principle of this utility model is as follows: the equipment storage unit 1 is connected to the manual gate valve 2 via a flange, the manual gate valve 2 is connected to the pumping unit 3 via a flange, the double-suction centrifugal pump 3 is equipped with flexible joints at the inlet and outlet, and a check valve at the outlet, and the pumping unit 3 is connected to the pressure stabilizing container 4 via a flange. Before the start of operation, the manual gate valve 2 is manually opened, and the pumping unit 3 simultaneously draws the medium from the storage unit (water tank / oil tank) 1 into the pressure stabilizing container 4 through the computer control system 15. The pumping unit 3 is controlled by a frequency converter to obtain the coarse adjustment flow rate with the required constant pressure, and the medium is pressure stabilized in the pressure stabilizing container 4; then the required flow rate of the medium is obtained through the mass flow meter 6, the pneumatic switch valve 5, and the electric V-type regulating valve 7. The standard flow system is connected to the upper inlet of the oil-water mixer 8 via a flange. The obtained standard flow rates of oil and water are simultaneously injected into the oil-water mixer 8 in proportion (the oil-water mixer 8 can mix oil and water, and can also separate them according to their properties; the separation chamber and mixing chamber in the tank are separated by a partition and are not interconnected. The separation chamber is equipped with multiple baffles to further slow down the flow rate of the mixed medium and increase the contact time between water and oil to promote better separation). After the pressure is stabilized, the mixed medium passes through the downstream standard flow system again to obtain the required constant flow rate, and enters the test pipeline of the lifting simulation platform mechanism 9 through the gas-liquid mixing pipeline 12. Another gas supply system 13 provides the required flow rate of pure gas. The gas supply system 13 is connected to the gas-liquid mixing pipeline 12 via a flange. The gas is fully mixed with the oil-water mixture through the gas-liquid mixing pipeline 12 to obtain a three-phase fluid. According to the required flow rate and diameter pipeline set by the computer control system 15, the corresponding pipeline in the lifting simulation platform mechanism 9 is selected, and the pneumatic switch valve 5 in the corresponding pipeline is opened. The three-phase fluid flows through the test pipeline, and the flow rate and morphology of the three-phase fluid in the pipeline are measured and recorded. Before the test, the lifting simulation platform mechanism 9 can be lifted to the required angle along the longitudinal slide rail by an electric crane to simulate the inclined well form during oil and gas collection. After the measurement is completed, the fluid begins to flow back at the top of the lifting simulation platform mechanism 9. It first passes through the gas-liquid separator 11 for gas-liquid separation, and the gas in the medium is discharged into the air. The remaining medium flows back to the oil-water mixer 8 through a high-pressure hose (the hose is equipped with a quick-connect fitting, one end of which is connected to the gas-liquid separator 11, and the other end is connected to the oil-water mixer 8) for a period of time to settle and separate the oil and water. After a certain period of time, the ball valve at the bottom of the tank is opened to return the water at the bottom to the water storage tank 1, and the remaining oil flows back to the oil storage tank 1, and the test ends.

[0022] This device provides an optimal solution for the inability to accurately predict the dynamics of multiphase flow in wellbore during underground oil production, enabling better operational condition diagnosis. It also addresses the insufficient research on multiphase flow in inclined wells and meets the needs of the commonly used inclined and horizontal wells in oil and gas extraction.

[0023] The lifting simulation platform mechanism can be a commercially available product, such as the six-axis lifting and swinging motion platform from Suzhou Tongnuoer Intelligent Technology Co., Ltd.

Claims

1. A multiphase flow calibration device, comprising: include: Two sets of liquid storage units (1) arranged symmetrically at the top and bottom, manual gate valve (2), pumping unit (3), oil-water mixer (8), lifting simulation platform mechanism (9), gas supply system, standard flow system and computer control system (15). The storage unit (1) is connected to the pumping unit (3) via a manual gate valve (2). The pumping unit (3) is connected to the standard flow system via a flange. The standard flow system is connected to the inlet of the oil-water mixer (8). The outlet of the oil-water mixer (8) is connected to the downstream standard flow system and then to the gas-liquid mixing pipeline (12). The input end of the gas-liquid mixing pipeline (12) is also connected to the gas supply system (13), and the output end is connected to the test pipeline of the lifting simulation platform mechanism (9). A gas-liquid separator (11) is provided at the end of the test pipeline. The output end of the gas-liquid separator (11) is connected to the oil-water mixer (8). The computer control system (15) includes a PLC programmable logic controller and a distributed IO module. It uses KingView configuration software to realize human-machine interaction and data processing to control the operation of the pumping unit (3), standard flow system, gas supply system (13) and lifting simulation platform mechanism (9), and collects flow, pressure and temperature data in real time.

2. The multiphase flow rate calibration device according to claim 1, characterized in that: The oil-water mixer (8) is equipped with a heating device and is divided into a mixing chamber and a separation chamber by a partition. The separation chamber is equipped with multiple layers of baffles.

3. The multiphase flow rate calibration device according to claim 1, characterized in that: The gas supply system (13) includes a gas storage tank, an air compressor, a refrigerated dryer (16) and a bell-shaped standard measuring instrument (14), which is connected to the gas-liquid mixing pipeline (12) via an electric V-type regulating valve (7).

4. The multiphase flow rate calibration device according to claim 1, characterized in that: The standard flow system includes a pressure stabilizing vessel (4), a pneumatic switch valve (5), a mass flow meter (6), and an electric V-type regulating valve (7) connected in sequence. The lengths of the straight pipe sections before and after the mass flow meter (6) are not less than 10 times and 5 times the pipe diameter, respectively.

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