Study on Erosion Results of Temporary Venting Device in Shale Gas Pipeline Station

Yong Chen; Zheng Zhang; Dongying Meng; Jinjin Tan

doi:10.54097/1t7fgb89

Authors

Yong Chen
Zheng Zhang
Dongying Meng
Jinjin Tan

DOI:

https://doi.org/10.54097/1t7fgb89

Keywords:

FLUENT; CFD; Shale gas; Erosion rate; Grey Correlation analysis; Pipeline failure analysis.

Abstract

A temporary venting device for shale gas pipeline station is designed. After one year of adhibition, there are pits in the elbow of the venting pipe, which is presumed to be caused by the erosion of the elbow by untreated shale gas in the gas collector. The erosion model is simplified. The sand is set as the discrete phase, and the gas and liquid are set as the continuous phase. Based on the VOF model and the DPM discrete phase model of multiphase flow, the erosion rate of U-shaped pipe is studied by ANSYS Fluent. The internal flow field of multiphase flow in the pipe is studied. The influence of solid particle velocity, mass flow, particle diameter, curvature-to-diameter rate and pipe diameter on the erosion rate of the elbow is studied by using the control variable method. The influence of various factors on the erosion rate is analyzed by grey correlation analysis. It provides a basis for reducing the erosion rate of U-shaped pipeline and prolonging the service life of pipeline.

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