发明名称 |
Underbalanced drilling applications hydraulically operated formation isolation valve |
摘要 |
A formation isolation valve for underbalanced drilling applications. A system for operating a formation isolation valve includes the valve interconnected in a casing string. An assembly displaces through the casing string, thereby causing the valve to open prior to the assembly reaching the valve. An operating system includes a well tool with an actuator positioned downhole. A device for causing the actuator to operate the well tool is also positioned downhole remote from the actuator. A method of operating a well tool includes the steps of: positioning the well tool in a well, the well tool including an actuator; positioning a power source for the actuator in the well; and at a downhole position remote from the actuator, causing the actuator to operate the well tool.
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申请公布号 |
US2007012457(A1) |
申请公布日期 |
2007.01.18 |
申请号 |
US20050180140 |
申请日期 |
2005.07.13 |
申请人 |
CURTIS FREDRICK D;HYDEN RONALD;HARVEY MICHAEL;WILLIAMSON JIMMIE R JR;VICK JAMES D JR |
发明人 |
CURTIS FREDRICK D.;HYDEN RONALD;HARVEY MICHAEL;WILLIAMSON JIMMIE R.JR.;VICK JAMES D.JR. |
分类号 |
E21B31/06 |
主分类号 |
E21B31/06 |
代理机构 |
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主权项 |
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