发明名称 Non-seize material attachment for a drill slip system
摘要 An oil or gas well slip system is provided that includes a first movable member having an interactive contact surface and a second movable member having a mating interactive contact surface for slidable engagement with the interactive contact surface of the first movable member. The first and second movable members are each comprised of a first material. A second material, compositionally different from the first material, is attached to the interactive contact surface of either the first or the second movable member.
申请公布号 US6915857(B2) 申请公布日期 2005.07.12
申请号 US20040812578 申请日期 2004.03.30
申请人 VARCO I/P. INC. 发明人 VAN RIJZINGEN JOHANNES WILHELMUS HENRICUS;ROLING RONALDUS R. M.;MASON DAVID B.
分类号 E21B19/00;E21B19/10;E21B23/01;E21B29/12;(IPC1-7):E21B23/01 主分类号 E21B19/00
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