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实用新型
CN203756112U 洗井平衡封隔器 失效 - 权利终止

洗井平衡封隔器
摘要：
本实用新型公开了洗井平衡封隔器，包括自上而下依次连接的上接头、上中心管、下中心管、下接头，所述上中心管外部设计有洗井平衡机构，所述洗井平衡机构下端通过上挡帽连接同样套在上中心管外侧的外中心管，所述洗井平衡机构外侧设计洗井外套，所述外中心管外部套有坐封机构，坐封机构下端连接解封机构，解封机构外侧设计锁套，所述下中心管外侧连接上活塞，下接头外侧连接有下活塞。本实用新型洗井平衡机构的设计，使封隔器能够承受更高的洗井压力；减小了封隔器解封剪钉在洗井压力较高时的受力，提高了封隔器密封性能。
摘要（英）：

The utility model discloses a well washing balance packer. The well washing balance packer comprises an upper connector, an upper central pipe, a lower central pipe and a lower connector which are sequentially connected from top to bottom, wherein a well washing balance mechanism is designed outside the upper central pipe, the lower end of the well washing balance mechanism is connected with an outer central pipe sleeving the upper central pipe through an upper blocking cap, a well washing sleeve is designed on the outer side of the well washing balance mechanism, the outer central pipe is sleeved by a setting mechanism, the lower end of the setting mechanism is connected with a deblocking mechanism, a lock sleeve is designed on the outer side of the deblocking mechanism, the outer side of the lower central pipe is connected with an upper piston, and the outer side of the lower connector is connected with a lower piston. By adopting the well washing balance mechanism, the packer can bear high well washing pressure, the stress of the packer deblocking a shear pin when well washing pressure is high is reduced, and the sealing performance of the packer is improved.

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