| 发明名称 |
Method of applying an axial force to an expansion cone |
| 摘要 |
A method of applying an axial force to a first piston positioned within a first piston chamber including applying an axial force to the first piston using a second piston positioned within the first piston chamber.
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| 申请公布号 |
US7063142(B2) |
申请公布日期 |
2006.06.20 |
| 申请号 |
US20020076659 |
申请日期 |
2002.02.15 |
| 申请人 |
SHELL OIL COMPANY |
发明人 |
COOK ROBERT LANCE;BRISCO DAVID PAUL;RING LEV;BULLOCK MICHAEL |
| 分类号 |
E21B29/00;E21B33/10;E21B33/16;E21B43/10 |
主分类号 |
E21B29/00 |
| 代理机构 |
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代理人 |
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