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实用新型
CN202152661U 油井锚定式分级解封封隔器 失效 - 权利终止

油井锚定式分级解封封隔器
摘要：
一种油井锚定式分级解封封隔器，包括封隔装置和锚定装置，其特征是在胶筒套(5)外管壁的上锥体(7)上端与上接头(1)之间还套装有一胶筒(6)及短管状的液缸(4)，液缸(4)是通过解封剪钉(2)固定在胶筒套(5)上。本实用新型结构合理、操作方便、工作可靠，用于油田分层作业中，在上提管柱解封时可实现多个封隔器分级解封，因而能够减小整体解封的上提拉力、降低施工难度、避免井下事故。
摘要（英）：

An anchoring type graded deblocking packer for an oil well comprises a packing device and an anchoring device, and is characterized in that a rubber cylinder (6) and a short pipe-shaped hydraulic cylinder (4) is sheathed between the upper end of an upper cone (7) at the outer pipe wall of a rubber cylinder sleeve (5) and an upper joint (1), and the hydraulic cylinder (4) is fixed on the rubber cylinder sleeve (5) by a deblocking shear pin (2). The anchoring type graded deblocking packer has a simple structure, is convenient to operate and reliable in working, can be used in the layering operation of an oil field, and can realize graded deblocking of multiple packers when a pipe column is lifted for deblocking, thus reducing the upward lifting force of whole deblocking, reducing construction difficulty and avoiding underground accidents.

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