发明名称 Slip assembly for hanging an elongate member within a wellbore
摘要 A slip assembly carried about a liner for lowering into a wellbore includes a C-ring having an inner conical surface contracted about a matching outer surface of the liner and held in contracted position by disposal of its end closely within a recess in the member. When its end is raised from the recess, the c-ring expands to cause its teeth to engage with the wellbore, whereby the liner may be lowered to further expand the c-ring to cause its teeth to dig into the wellbore to suspend the liner therefrom.
申请公布号 US6761221(B1) 申请公布日期 2004.07.13
申请号 US20020136969 申请日期 2002.05.02
申请人 DRIL-QUIP, INC. 发明人 YOKLEY JOHN N.;REIMERT LARRY E.
分类号 E21B23/01;E21B23/04;E21B43/10;(IPC1-7):E21B23/01 主分类号 E21B23/01
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