全过程欠平衡钻井井下套管阀结构改进及优化

Structure Improvement and Optimization of Downhole Deployment Valve during Under-balanced Drilling

针对套管阀的开关动作可靠性和密封性存在的问题,对套管阀结构进行了部分改进,运用ANSYS Workbench软件对密封结构进行优化,对提高套管阀的整体性能具有重要意义。

Downhole deployment valve（DDV）has been used on the course under-balanced drilling technology to save the cost and？enhance the productivity of oil.But according to the field tests,there are some problems of the reliability of switch action and the sealing property of DDV,which remained to improve.Aiming at these problems？above,ANSYS Workbench software was used to improve partial structure of DDV and optimize seal structure.