Analysis of Influence of Natural Gas Pipeline Arrangement on Bias Flow of Metering Branch

This paper first introduces the operation status of the oilfield metering system, and then through different natural gas pipeline layouts, a metering system that is compared with the Tarim oilfield flowmeter is added to the compressor station at the first station of the long-distance natural gas pipeline. Then, in order to avoid the problem of bias flow in the manifold of the metering system at the first station, an adiabatic model was used to simulate the flow field of the metering system to simulate the setting of the natural gas fluid, and the influence of the arrangement of the natural gas pipeline on the bias flow of the metering branch was analyzed. Although the flow distribution of the middle inlet and outlet is relatively uniform, the flow rate of the middle branch is too high, which is not conducive to measuring the flowmeter, and may bring adverse effects such as vibration and noise. The speed of entry and exit on the same side is relatively gentle, and the measurement and pipeline operations are more convenient, which helps to improve the accuracy of the comparison measurement system at Lunnan Shi Station, protect the economic interests of both supply and demand, and provide reference for solving other domestic and foreign measurement problems.