| 发明名称 |
GRAVEL PACK APPARATUS HAVING ACTUATED VALVES |
| 摘要 |
A device and method allows a bore valve in a washpipe of a crossover tool and in certain instances a port valve or sliding sleeve to open or close upon command from the surface so that gravel slurry may be placed in a wellbore around a wellscreen. I nI coG |
| 申请公布号 |
AU2013248172(B2) |
申请公布日期 |
2015.11.05 |
| 申请号 |
AU20130248172 |
申请日期 |
2013.10.17 |
| 申请人 |
WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
发明人 |
BROUSSARD, JOHN;HALL, CHRISTOPHER A.;VAN PETEGEM, RONALD |
| 分类号 |
E21B43/04;E21B23/06;E21B43/10;E21B43/12 |
主分类号 |
E21B43/04 |
| 代理机构 |
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代理人 |
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