| 发明名称 |
Ground injection apparatus |
| 摘要 |
Drive-point injection apparatus is provided with a packer 58 to prevent leakage of liquid towards the surface during cyclic pulsing of the liquid, e.g. during out and back surge pulsing. |
| 申请公布号 |
GB2412675(A) |
申请公布日期 |
2005.10.05 |
| 申请号 |
GB20050006521 |
申请日期 |
2005.03.31 |
| 申请人 |
* WAVEFRONT ENERGY & ENVIRONMENTAL SERVICES INC |
发明人 |
BRETT CHARLES * DAVIDSON |
| 分类号 |
B09C1/00;E21B7/26;E21B33/127;E21B43/00;E21B43/25;F15D1/00 |
主分类号 |
B09C1/00 |
| 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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