双电潜泵井封隔式Y-tool工具研究与应用

针对海上油田双电潜泵井出现的电潜泵单流阀漏失导致流体内循环无效做功的问题,研制了一种新型封隔式Y-tool工具。该Y-tool工具设计了封隔套和封隔套锁紧机构,可防止井内流体无效内循环,保证电潜泵井的正常生产,减少因电潜泵单流阀漏失而造成的修井作业。现场已累计应用15井次,措施有效率为100%,有效提高了油井生产时率,节省作业费。该技术可促进海上油田双电潜泵采油技术的推广应用,具有良好的经济效益和社会效益。

Study and Application of Packer Y-tool in Dual-ESP Wells

A new packer Y-tool was developed to address the problem of ineffective fluid internal circulation due to the lost circulation at the check valve of the dual electric submersible pump (dual-ESP) in offshore oilfields. The Y-tool was designed with packer sleeve and packer sleeve locking mechanism to prevent the ineffective internal circulation of fluid in the well, ensuring the normal production of the ESP wells and reducing the workover operation caused by the lost circulation at the ESP check valve. The method was applied 15 wells in the field, with 100% efficiency rate, effectively improving the production rate of oil wells and reducing operation cost. The technology can promote the application of dual electric submersible pump in the oil recovery of offshore oilfields, with great economic and social benefits.