Journal of Southwest Petroleum University(Science & Technology Edition) ›› 2025, Vol. 47 ›› Issue (5): 166-180.DOI: 10.11885/j.issn.1674-5086.2023.09.18.02

• PETROLEUM MACHINERY AND OILFIELD CHEMISTRY • Previous Articles     Next Articles

An Experimental and Simulation Study on Material Erosion of Orifice Manifold at High Speed

ZENG Jing1, DENG Kuanhai1, ZHOU Junping2, LIU Bing1,3, LIN Yuanhua1   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. School of Resources and Safety Engineering, Chongqing University, Shapingba, Chongqing 400044, China;
    3. Guizhou Aerospace Tianma Electromechanical Science and Technology Co. Ltd., Zunyi, Guizhou 563000, China
  • Received:2023-09-18 Published:2025-11-04

Abstract: High pressure difference, high flow rate and high sand content in throttling manifold of high pressure and high production gas wells make the problems of high speed gas-solid erosion wear especially prominent, and the failure of throttling manifold is frequent, which is easy to induce overflow, kick and blowout accidents, aggravating well control risks and bringing safety risks. Therefore, according to ASTM G76—2013, this paper adopts gas-solid nozzle erosion test method and air jet erosion test rig. The high speed (107 to 149 m/s) gas-solid nozzle erosion test of 30CrMo alloy steel was carried out under different inlet pressure (0.06 to 0.15 MPa) and impact angle (15° to 90°), and the erosion rate of 30CrMo alloy steel under different experimental conditions was obtained. The erosion rate equation of 30CrMo alloy steel suitable for high speed solid particle impact is established. Based on the results of erosion experiments, the optimal particle motion model for high speed compressible flow is constructed. Combined with discrete phase model and gas-solid two-phase coupling calculation method, a three-dimensional CFD erosion model of “reduced-tuber-nozzle-erosion cavity” was established. The erosion simulation of gas-solid nozzle of 30CrMo alloy steel, a throttling manifold material, was carried out at different impact angles and inlet pressure, and the distribution characteristics of flow field, particle movement trajectory, impact velocity distribution and slip characteristics were revealed. The accuracy and reliability of the simulation results are verified by the experimental results.

Key words: high pressure and high production gas wells, choke manifold, gas-solid nozzle erosion, CFD erosion model, erosion rate

CLC Number: