旋转控制头动密封结构设计及密封特性分析  

Structural design and performance analysis of dynamic seals on a rotary control head

作　　者：魏晓东[1] 刘清友[1] 王国荣[1] 

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

出　　处：《华中科技大学学报（自然科学版）》2011年第10期19-22,27,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家科技重大专项资助项目(2008ZX05000-036-003)

摘　　要：依据煤层气钻井工况,对旋转控制头动密封结构进行了设计.通过简化密封结构建立分析模型,应用有限元分析软件(ABAQUS)对其接触压力、摩擦扭矩进行了数值模拟研究.在此基础上进行了密封件磨损分析及规律研究,通过磨损试验验证了研究结果的正确性,并将具有该结构的旋转控制头应用于现场,结果表明所设计动密封结构合理,能够有效减少非钻时时间,提高钻井作业效率,满足煤层气欠平衡钻井的需要.Based on the coal bed methane drilling conditions,the dynamic seal structure of rotary control heads was designed.The model was established by simplifying the sealing structure.Aiming at its contact pressure and friction torque,the numerical simulation was researched by using the finite element analysis software（ABAQUS）.On this basis,the analysis and the rule of the seal wear were studied,and the results were verified by wear test.Finally,the rotary control head with this structure was applied to the field.The result indicates that the dynamic seal structure is reasonable,the time of non-drilling time is reduced and the efficiency of drilling operation is improved.It can be seen that the structure meets the needs of coal bed methane under-balanced drilling.

关 键 词：旋转控制头 动密封 结构设计 接触压力 磨损 现场应用 

分 类 号：TH122[机械工程—机械设计及理论]