发明名称 |
Remote sensor for determining proper placement of elevator slips |
摘要 |
An apparatus for installing pipe such as large diameter casing in a wellbore. Sensors are positioned at a predetermined location at or near the upper surface of elevators suspended from a rig traveling block. As elevators are lowered over a section of pipe, such sensors provide a signal indicating that the elevators are positioned a desired distance below the top of the pipe. The signal alerts an operator that elevators are positioned properly relative to a pipe body so that slips within the elevators will be properly engaged against the outer surface of the pipe and not a connection upset or large diameter external coupling.
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申请公布号 |
US6626238(B2) |
申请公布日期 |
2003.09.30 |
申请号 |
US20010021391 |
申请日期 |
2001.12.12 |
申请人 |
OFFSHORE ENERGY SERVICES, INC. |
发明人 |
HOOPER ROBERT C. |
分类号 |
E21B19/07;E21B44/00;(IPC1-7):E21B47/00 |
主分类号 |
E21B19/07 |
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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