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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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