| 发明名称 |
Method and apparatus to selectively reduce wellbore pressure during pumping operations |
| 摘要 |
The present invention provides for a tool having diverter valves to reduce the pressure in a wellbore caused by frictional resistance to fluid flow as the beta wave of a gravel pack operation makes its way up the wellbore.
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| 申请公布号 |
US2004231853(A1) |
申请公布日期 |
2004.11.25 |
| 申请号 |
US20030442783 |
申请日期 |
2003.05.21 |
| 申请人 |
ANYAN STEVEN L.;VIRALLY STEPHANE J.;AARDALSBAKKE OLUKEMI IBIRONKE |
发明人 |
ANYAN STEVEN L.;VIRALLY STEPHANE J.;AARDALSBAKKE OLUKEMI IBIRONKE |
| 分类号 |
E21B34/10;E21B43/04;(IPC1-7):E21B33/00 |
主分类号 |
E21B34/10 |
| 代理机构 |
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