压力滑套开启压力分析计算

Calculation and Analysis on Opening Pressure of Pressure Sliding Sleeve

压力滑套是完井过程经常用到的压力开关工具,压力滑套的准确开启压力对现场施工至关重要。国内压力滑套普遍存在开启压力不准确、设计开启压力与试验开启压力偏差较大的问题。文中基于压力滑套开启压力的影响因素分析,建立了压力滑套开启压力的计算模型,推导出了压力滑套在考虑摩擦力情况下的开启压力计算公式。通过滑套开启压力试验,得到不同销钉情况下的滑套开启压力。研究结果发现,不考虑摩擦力的计算结果误差较大,考虑摩擦的理论计算结果与试验基本吻合,为压力滑套开启压力的设计提供了参考依据。

The pressure sliding sleeve is a pressure switch tool that is often used in the well completion process.The accurate opening pressure of the pressure sliding sleeve is very important for the field construction.The domestic pressure sliding sleeve generally has the problem of inaccurate opening pressure and large deviation between the design opening pressure and the test opening pressure.Based on the analysis of the influencing factors of the opening pressure of the pressure sliding sleeve,the calculation model of the opening pressure of the pressure sliding sleeve is established,and the calculation formula of the opening pressure of the pressure sliding sleeve under the consideration of friction is deduced.Through the sliding sleeve opening pressure test,the sliding sleeve opening pressure under different pin conditions is obtained.The research results show that the error of the calculation result without considering the friction force is large,and the theoretical calculation result considering the friction is basically consistent with the test,which provides a reference for the design of the opening pressure of the pressure sliding sleeve.