摘要
扭力冲击器是常用的钻井提速工具,其中导流筒在复杂钻井环境中面临严重的冲蚀磨损问题,因此设计合理的导流筒流道可以较好地降低其冲蚀磨损率。文章基于设计的导流筒方案,采用试验验证的冲蚀磨损模型理论与现场试验结果进行对比,分析了导流筒流道锥角、流道间距的变化对导流筒内部流场及冲蚀磨损性能的影响,结果表明导流筒分流处流道入口边缘及下部管壁处容易发生冲蚀磨损,与现场使用结果吻合。增加导流筒分流道锥角和分流道距中心的距离会降低导流筒的最大冲蚀率,但是会增加分流道出口处外壁面的冲蚀率。最后通过多组仿真数据对比分析,得到了导流筒的最佳流道倾角和流道间距,为该型导流筒的设计与改进提供了重要的理论依据。
Torque impactor is a commonly used tool to speed up drilling.The diversion tool of impactor has to be confronted with erosion and wear problems under complex environments.Therefore,a properly designed diversion tube can better reduce the diversion tool erosion wear rate.Based on the diversion tube scheme,the test verified erosion and wear model theory is compared with the field test results;the influence of cone angle of the diversion tube and the change of flow channel distance on the inner flow field and the erosion and abrasion performance of the diversion tube are analyzed.The results reveal that erosion wear is easy to occur at the inlet edge of the flow channel and the lower pipe wall of the diversion tube,which is consistent with the field application results.Increasing the flow channel inclination and the distance between flow channel and the center of the diversion tube can reduce the maximum erosion rate of the diversion tube,but increase the erosion rate of the outer wall at the outlet of the tube.By comparing multiple sets of simulation data,the best flow channel inclination and flow channel spacing of this type of diversion tube are proposed.The analysis results provide an important theoretical basis for the design and improvement of the guide tube.
作者
伊明
黄志强
靳晓伟
王成成
于贵健
霍宝锋
YI Ming;HUANG Zhiqiang;JIN Xiaowei;WANG Chengcheng;YU Guijian;HUO Baofeng(School of Petroleum Engineering,Yangtze University,Wuhan,Hubei 4301002,China;Engineering Technology Research Institute of Western Drilling Company,Karamay,Xinjiang 834000,China;Zhundong Drilling Company of Western Drilling Company,Karamay,Xinjiang 834000,China)
出处
《钻采工艺》
CAS
北大核心
2022年第5期101-105,共5页
Drilling & Production Technology
关键词
冲击器
导流筒
冲蚀
锥角
数值模拟
impactor
diversion tube
erosion
cone angle
numerical simulation
