发明名称 |
ELEVATOR FOR GRIPPING AND LIFTING A RISER JOINT |
摘要 |
<p>An elevator for gripping and lifting a riser joint or several interconnected riser joints of a completion and work over riser. A body includes a through bore for receiving a production pipe of a riser joint. The through bore is accessible via a longitudinal opening in the body. The body includes at least one locking device including a hydraulic cylinder. A piston rod of the hydraulic cylinder is moveable to and fro between an unlocking position, in which the piston rod allows a production pipe of a riser joint to pass into or out of the through bore via the longitudinal opening, and a locking position, in which the piston rod prevents a production pipe received in the through bore from passing out of the through bore via the longitudinal opening.</p> |
申请公布号 |
EP2222934(A1) |
申请公布日期 |
2010.09.01 |
申请号 |
EP20080852048 |
申请日期 |
2008.11.21 |
申请人 |
VETCO GRAY SCANDINAVIA AS |
发明人 |
AARHUS, JON, OLAV;WINDSLAND, OYSTEIN |
分类号 |
E21B19/06;E21B17/01 |
主分类号 |
E21B19/06 |
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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