| 发明名称 |
PRESSURE COMPENSATING APPARATUS AND METHOD FOR DOWNHOLE TOOLS |
| 摘要 |
An apparatus and method for opposing pressure-induced forces acting on a mandrel of a downhole tool. The apparatus and method are particularly suited for use wi th a packer and include a piston engageable with the mandrel. Forces placed upon the piston by pressure communicated from the tubing bore are transferred to the mandrel.
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| 申请公布号 |
CA2442088(C) |
申请公布日期 |
2008.12.09 |
| 申请号 |
CA20032442088 |
申请日期 |
2003.09.22 |
| 申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
ESLINGER, DAVID M.;ORTIZ, AVEL Z. |
| 分类号 |
E21B23/00;E21B17/07;E21B33/12 |
主分类号 |
E21B23/00 |
| 代理机构 |
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