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A study on the drill pipe erosion law in gas drilling
Author(s): 
Pages: 1013-1017
Year: Issue:  6
Journal: Acta Petrolei Sinica

Abstract: 针对气体钻井岩屑造成钻柱严重冲蚀的问题,基于气-固两相流和冲蚀理论,建立了环空岩屑运移模型.在Eulerian坐标系下求解气体连续相流场,在Lagrangian坐标系下对离散相岩屑粒子进行了碰撞求解,采用Grant和Tabakoff公式求解岩屑粒子冲蚀速率,借助实验数据验证了仿真模型.利用该模型研究了气体钻井中钻杆居中以及不同钻杆偏心率、井径扩大率、注气量和机械钻速下环空岩屑粒子运移规律和钻杆冲蚀...
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