发明名称 |
Lubricator for underbalanced drilling |
摘要 |
A system usable with a subterranean well includes a tubing and a lubricator. The tubing is adapted to receive a drill string in a passageway of the tubing, and the lubricator is located downhole and is connected to the tubing. The lubricator is adapted to be remotely operable from a surface of the well to control fluid communication between the passageway located above the lubricator and a formation located beneath the lubricator. The lubricator may include a sleeve and controller. The controller selectively moves the sleeve into a passageway of a valve of the lubricator to protect the valve from a downhole fluid.
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申请公布号 |
US6250383(B1) |
申请公布日期 |
2001.06.26 |
申请号 |
US20000531945 |
申请日期 |
2000.03.21 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORP. |
发明人 |
PATEL DINESH R. |
分类号 |
E21B21/00;E21B21/10;E21B23/00;E21B33/10;E21B34/00;E21B34/10;(IPC1-7):E21B23/08 |
主分类号 |
E21B21/00 |
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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