探针式铣锥结构参数优化设计  

Design of Parameter Optimization of Probing Milling Cones

作　　者：韩中轩[1] 练章华[1] 蔺恒利[2] 贾春萍[3] 李孝军[1] 吴欣袁[2] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]华北油田分公司采油工艺研究院,河北任丘062552 [3]吐哈油田分公司井下技术作业公司,新疆鄯善838200

出　　处：《石油钻探技术》2009年第3期65-68,共4页Petroleum Drilling Techniques

基　　金：国家自然科学基金项目"基于数值模拟的复杂地层地应力场反演研究"(编号:50774063)资助

摘　　要：针对套管大修时没有锥孔的铣锥其铣削效率低的问题,根据流体力学理论,对探针式铣锥结构进行了流体力学分析,推导出了流体对铣锥锥孔所产生周向力和扭矩的计算公式,计算了流体对6孔和8孔铣锥所产生的周向力和扭矩。对比计算结果得知,在相同条件下流体对8孔铣锥所产生的扭矩大于6孔铣锥。分析流体对铣锥锥孔所产生的周向力和扭矩的计算公式可知,存在一个流体对铣锥产生最大扭矩的锥孔流体入口角度,计算得这个最佳锥孔流体入口角度为45°。为有效增加流体对铣锥所产生的扭矩,提高铣削效率,可将6孔铣锥改为8孔铣锥,且将锥孔流体入口角度设计为45°。这为优化铣锥结构,设计新型、高效的套管修复工具提供了依据。Based on fluid dynamics theory, the casing repairing tools was analyzed, the equation to calculate the radial direction force and torque on cone hole caused by fluid was derived, the force and torque of 6-hole and 8-hole cones were calculated. The calculation indicates that the torque of 8-hole cone is higher than that of 6-hole cone under same condition. The analysis shows that there is a fluid entry degree which can create maximum torque, and the calculation shows that the 45° is the optimized entry degree. Therefore in order to increase the torque, the 6-hole cone can be modified into 8-hole and the entry degree should be 45°. This paper provides references for cone structure optimization, design and effect casing repairing tools.

关 键 词：套管修理 铣锥 结构参数 优化设计 

分 类 号：TE935[石油与天然气工程—石油机械设备]