Hydraulic starting type packer unsealing tool

The invention discloses a hydraulic starting type packer unsealing tool. The hydraulic starting type packer unsealing tool is characterized by comprising a mandrel, an upper connector, a lower connector, an upper piston, a lower piston and an unsealing device. The tool has a non-unsealing state (initial state) and an unsealing state, the tool can be switched from the non-unsealing state (initial state) to the unsealing state in a ball throwing and pressing mode according to operation requirements, and therefore a packer is unsealed. The hydraulic starting type packer unsealing tool solves theproblem that the packer is recovered by tripping in a pipe column at a time in well completion operation, and improves underground operation efficiency. 本发明公开了一种液压启动式封隔器解封工具，其特征在于：包括芯轴、上接头、下接头、上活塞、下活塞和解封装置，该工具有非解封状态(初始状态)和解封状态两种状态，可以根据作业需要，通过投球打压的方式将工具从非解封状态(初始状态)切换为解封状态，从而解封封隔器。本发明解决了完井作业中一趟管柱下入回收封隔器的问题，提高了井下作业效率。