钻探工程2025，Vol.52Issue(5)：51-60,10.DOI:10.12143/j.ztgc.2025.05.007
钻井液离心机关键部件内部流场及冲蚀磨损特性研究
Study on the internal flow field and erosion wear characteristics of key components of drilling fluid centrifuge
摘要
Abstract
During the solid-liquid separation of drilling fluids,solid-phase particles such as drill cuttings will cause serious wear failure and dynamic balance instability to the key components of the centrifuge,affecting the separation effect and shortening the service life.The internal flow field characteristics of the drilling fluid centrifuge are simulated based on the dense discrete phase model(DDPM)and the RNG k-ε turbulence model.The erosive wear performance of key components was predicted in combination with the Finnie erosion model.The effects of rotational speed,particle concentration,and medium viscosity on the erosion wear performance of the components were explored.The results show that the erosion is mainly concentrated on the blades of the screw conveyor near the feed cavity and at the bowl cone.The erosion rate of the centrifuge components rises as the rotational speed increases.Elevated particle concentration exacerbates the erosion of the components.While erosion on the inner wall of the bowl is reduced by an increase in medium viscosity,screw wall erosion is intensified.The research results provide valuable insights into the erosive wear characteristics of centrifuges and recommendations for optimizing the operation and maintenance of centrifuges in practical applications.关键词
离心机/钻井液/固相颗粒/固液分离/冲蚀磨损/螺旋输送器Key words
centrifuge/drilling fluid/solid-phase particles/solid-liquid separation/erosion wear/screw conveyor分类
天文与地球科学引用本文复制引用
冯美贵,刘一静,朱丽娜,康嘉杰..钻井液离心机关键部件内部流场及冲蚀磨损特性研究[J].钻探工程,2025,52(5):51-60,10.基金项目
中国地质调查局地质调查项目"绿色勘查钻探应用示范"(编号:DD20243154) （编号:DD20243154）
国家自然科学基金项目(编号:52275218) （编号:52275218）
深地国家科技重大专项课题"绿色高效精准智能化钻探技术集成(编号:2024ZD1003105) （编号:2024ZD1003105）
