发明名称 NON-SEIZE MATERIAL ATTACHMENT FOR A DRILL SLIP SYSTEM
摘要 An coil or gas well slip system (10) is provided having a slip bowl (20) with an interactive contact surface and a slip assembly (22) having a mating interactive contact surface for slidable engagement with the slip bowl interactive contact surface, wherein the slip bowl and the slip assembly are each comprised of a first material. A second material (51) is attached to the interactive contact surface of either the slip bowl or the slip assembly, wherein the second material is compositionally different from the first material to prevent cold welding between the slip bowl and the slip assembly and wherein the second material has little or no tendency to dissolve into the atomic structure of the first material.
申请公布号 WO03031760(A3) 申请公布日期 2004.08.12
申请号 WO2002US31738 申请日期 2002.10.04
申请人 VARCO I/P, INC.;VAN RIJZINGEN, JOHANNES, WILHELMUS, HENRICUS;ROLING, RONALDUS, R., M.;MASON, DAVID, B. 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 主分类号 E21B19/00
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