在S22水平井解封R封隔器的实践

Practice of Releasing R Packer in S22 horizontal well

针对R封隔器在伊朗Y油田S22水平井中的使用情况及解封时遇到的困难,分析了封隔器剪切销钉个数设计、各种解封工况下的解封力计算。查找该类封隔器难解封的原因,进而找到了切实可行的解封方案,不但成功地解决了S22水平井R封隔器解封难的问题,而且,提出了一套R封隔器在水平井中使用的优化方案,为今后该类封隔器在该区块其他水平井中使用提供了借鉴。同时,为已完成水平井在今后修井时的解封提供了可以借鉴的经验。

Based on understanding the technical parameters, using and operating conditions of R Packer, and focuing on the workingcondition and difficulties encountered when releasing this packer in the S22 horizontal well of the Y Oilfield in Iran, we analyzed theamount of shear pin design for R packer and all kinds of operating conditions of releasing force calculation. to study the obscure reasonsto unset this kind of packer, finally, a practical solution to unset this kind of packer is founded. Not only successfully solved the R Packerreleasing problem in S22 horizontal well, but also put forward a set of optimized plan for using of R Packer in horizontal well. In thefuture, it provides a useful reference for this kind of packer using in the other horizontal wells in the S reservoir. Meanwhile, for thehorizontal wells which had been completed in this oilfield, it provides a useful experience draw from the lessons learnt of releasing thepacker for the workover operation in the future.