发明名称 Slip system for retrievable packer
摘要 The present invention provides a slip system for frictionally engaging a temporarily set body, such as a packer or a whipstock, within a wellbore. The slip system comprises (1) a plurality of slips; (2) a tubular slip ring for holding the individual slips at an end; and (3) a tubular cone body having beveled surfaces for receiving the individual slips when the slip system is actuated. Each slip has a first end that defines a tail, and a second opposite end that defines a slip body. The tail and the slip body are integral, meaning that the intermediate shank portion of prior art slips is essentially removed. In its place, a dovetail geometry is provided within the tail, creating an increased tail width at the end of the tail opposite the slip body. The slip ring has a plurality of pockets, with each pocket being dimensioned to receive the dovetailed configuration of the tail on the respective slips.
申请公布号 US2004244966(A1) 申请公布日期 2004.12.09
申请号 US20030457065 申请日期 2003.06.06
申请人 ZIMMERMAN PATRICK J.;WARD DAVID G.;RITTER MICHAEL G. 发明人 ZIMMERMAN PATRICK J.;WARD DAVID G.;RITTER MICHAEL G.
分类号 E21B33/1295;(IPC1-7):E21B23/06 主分类号 E21B33/1295
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