Numerical prediction of erosion damage in sandy foam extraction fluid of gas extraction pipeline

Gas extraction wellbore and surface pipelines are prone to wall thinning, puncture leakage, and fracture under the erosion of sandy extraction fluid, which seriously affects the safety of gas extraction. In this paper, using the discrete numerical method of particle-containing multiphase flow, we establish an erosion damage prediction model of a gas extraction pipeline and calculate the erosion rate of pipeline wall under different production rates for the oil pipeline at the wellhead of gas extraction wells, and the pipeline and elbow on the surface, to get the amount of damage. The calculation results reflect the oil pipeline and ground pipeline wall with the thinning amount, the local bending wall damage rate, and the formation of thinning distribution values. The results can provide a reference for controlling the gas extraction flow rate of gas wells and evaluating pipeline conditions.