| 发明名称 |
COILED TUBING SURFACE OPERATED DOWNHOLE SAFETY/BACK PRESSURE/CHECK VALVE |
| 摘要 |
Systems and methods for allowing intervention into a wellbore with a valve assembly that can be selectively opened and closed. An intervention work string has a multi-cycle open/close valve assembly which can be selectively opened to perform intervention tasks in the wellbore. |
| 申请公布号 |
EP3102779(A1) |
申请公布日期 |
2016.12.14 |
| 申请号 |
EP20140881620 |
申请日期 |
2014.12.29 |
| 申请人 |
Baker Hughes Incorporated |
发明人 |
MACKENZIE, Gordon;KELBIE, Graeme, Michael |
| 分类号 |
E21B34/06;E21B21/08;E21B34/12;E21B43/12 |
主分类号 |
E21B34/06 |
| 代理机构 |
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