Y341B-115逐级解封封隔器的研制与应用

针对现有多层堵水封隔器坐封难、解封难问题,优化设计了逐级解封封隔器的坐封机构、锁紧机构、验封机构、平衡保护机构、逐级解封机构。该封隔器操作简单,解封动作可靠,解封负荷小,小于20 kN;验封可靠,多级使用可对各级封隔器验封;其平衡保护机构可使封隔器既承上压又承下压,具有双向承压能力;优选出氢化丁晴胶料,提高了胶筒耐温耐压性能;设计有防中途坐封的销钉,保护封隔器的密封件,提高了封堵管柱的可靠性。经现场多级堵水应用,封堵效果好,起管柱时解封负荷小,实现了逐级解封,为厚油层多级堵水提供技术支撑。

Development and Application of Y341B- 115 Series Step- By- Step Releasable Packer

In view of difficulties of current multilayer water plugging packer in setting and releasing, designed setting mechanism, latch mechanism, seal check mechanism, balance protect mechanism and step-by-step releasable mechanism. it has characters such as easy operation, reliably release, lower release loading(less than 20 kN), depepdable seal check and use in multilevele can check each packer. Its balance protect mechanism makes packer can hold pressure comes from up and down, Optimized acrylonitrile-butadiene rubber, enhanced pressure and temperature resistance of sealing rubber. Provide pin to avoid sealing at midway and protect seal part of packer, enhanced reliability of plugging string. Applications have got achievement.