Skid Mounted Equipment-Gas/Liquid Dual-Phase Flowmeter - Shanghai Zhaohui Pressure Apparatus Co.,Ltd.

Skid Mounted Equipment--Gas/Liquid Dual-Phase Flowmeter

In the process of oil extraction, transportation and processing, the accurate measurement of gas-liquid two-phase flow plays a key role in production efficiency, cost control and safe production! With the development of the industry, skid-mounted equipment has been widely used in various energy projects due to its integration, modularization, easy transportation and installation.

Traditional measurement methods are difficult to meet the requirements of high precision, real-time and compactness. The emergence of gas-liquid two-phase multi-parameter flow meter (PT6002) provides an effective way to solve this problem. It can accurately measure the liquid production, gas production, temperature and other parameters of gas-liquid two-phase flow in the limited space of the skid-mounted equipment , ensuring the efficient and stable operation of the skid-mounted equipment.

Traditional mining measurement technology

1). Separate measurement

Traditional gas-liquid two-phase flow measurement often uses a separation measurement process. The principle is to first use a separator to separate the gas-liquid mixture into a single gas phase and a liquid phase.

1.For the gas phase, orifice flow meters, vortex flow meters, etc. are usually used for flow measurement.

2.For the liquid phase, turbine flow meters, electromagnetic flow meters, etc. are used.

2).Combination measurement of multiple flow meters

For example, combine the Venturi tube with a turbine flow meter. Or use a throttling element with a multi-hole dynamic pressure probe to comprehensively calculate the flow of gas and liquid phases.

The problems with traditional mining measurement technology

1). Problems with separate measurement and metrology processes

Large and complex equipment: The separator is large and occupies a lot of space. In a scenario where there is limited space such as a skid-mounted device, installation and layout are extremely difficult. At the same time, the internal structure of the separator is complex, which increases the manufacturing and maintenance costs of the equipment.
Limited measurement accuracy: In actual operation, it is difficult for the separator to achieve complete separation of gas and liquid. The separated gas phase may carry tiny droplets, and bubbles may remain in the liquid phase, which will cause deviations in subsequent single-phase flow meter measurements and fail to accurately reflect the true flow of the gas and liquid phases.
Slow response speed: From the gas-liquid mixture entering the separator to the completion of the measurement, the entire process involves multiple links, which takes a long time and makes it difficult to track the dynamic changes of gas-liquid two-phase flow parameters in real time. The demand for skid-mounted equipment to quickly respond to production adjustments cannot be met.

2) Problems in the measurement process of multiple flowmeter combinations

Limited measurement range: Different flow meters have different measurement ranges and applicable working conditions. When used in combination, it is difficult to maintain good measurement accuracy in a wider flow range. For gas-liquid two-phase flow with large flow fluctuations, the accuracy of the measurement results is greatly reduced.
Severely affected by flow pattern: There are many flow patterns in gas-liquid two-phase flow, such as bubbling flow, slug flow, annular flow, etc. The physical properties of the fluid under different flow patterns are complexly distributed. When multiple flow meters are combined for measurement, the change of flow pattern will significantly affect the accuracy of the measurement results, resulting in large measurement errors.
Poor system stability: The combination of multiple flow meters increases the complexity and failure points of the system. Problems are prone to occur in signal matching, data fusion and equipment compatibility between flow meters, affecting the stability and reliability of the entire measurement system.

The solution

Gas/liquid dual phase multi-parameter flow meter integrated into skid mounted system.

The liquid production, gas production and temperature measured by the flow meter are transmitted to the PLC control system of the skid-mounted equipment in real time through the RS485 communication interface or other standard communication protocols. The PLC processes, stores and analyzes these data, and automatically controls the relevant equipment in the skid-mounted equipment, such as pumps and valves, according to the preset control strategy, to achieve optimization and stable operation of the production process. At the same time, the data can also be uploaded to the remote monitoring center through the remote communication module, which is convenient for managers to grasp the operating status of the skid-mounted equipment in real time.

The advantages of using gas-liquid two-phase multi-parameter flow meter (PT6002) solution

1) High-precision measurement

Compared with traditional measurement processes, the gas-liquid two-phase multi-parameter flow meter directly measures the gas-liquid mixture, avoiding the errors caused by incomplete separation. It also uses advanced sensor technology and precise algorithms to comprehensively consider the impact of multiple factors on the measurement results, greatly improving the measurement accuracy.

2) Strong real-time performance

It can measure multiple parameters of gas-liquid two-phase flow online in real time and quickly reflect the dynamic changes of fluid parameters. In the project, the data update frequency can reach seconds, so that operators can timely grasp the gas-liquid flow in the skid-mounted equipment, respond quickly to abnormal situations in the production process, adjust production parameters in time, ensure the continuity and stability of production, and effectively reduce losses caused by production fluctuations.

3) Compact structure, suitable for skid-mounted equipment

The multi-parameter flow meter has a compact structure design, small size, small space occupation, and does not require a large separator, which greatly saves the internal space of the skid-mounted equipment, facilitates the layout and integration of the equipment, and also reduces the difficulty of equipment installation and commissioning.

4) Easy maintenance

The flow meter has no complicated moving parts inside, which reduces failures caused by component wear, sticking, etc. and reduces maintenance workload.

5) Multifunctional integration

A set of multi-parameter flow meters can replace multiple measuring instruments in traditional processes, reducing the number of equipment and system complexity, reducing equipment procurement costs, while also reducing the connecting pipes and interfaces between equipment, reducing leakage risks, and improving system reliability.

6) Comprehensive utilization of data and production optimization

The multi-parameter data provided can help us better understand the flow characteristics of gas-liquid two-phase flow in skid-mounted equipment and the operating conditions of the production process, providing a strong basis for improving production processes, optimizing equipment performance and rational use of energy.

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