发明名称 |
HEAVE COMPENSATION SYSTEM FOR ASSEMBLING A DRILL STRING |
摘要 |
A method of deploying a jointed tubular string into a subsea wellbore includes lowering the tubular string into the subsea wellbore from an offshore drilling unit. The tubular string has a slip joint. The method further includes, after lowering, anchoring a lower portion of the tubular string below the slip joint to a non-heaving structure. The method further includes, while the lower portion is anchored: supporting an upper portion of the tubular string above the slip joint from a rig floor of the offshore drilling unit; after supporting, adding one or more joints to the tubular string, thereby extending the tubular string; and releasing the upper portion of the extended tubular string from the rig floor. The method further includes: releasing the lower portion of the extended tubular string from the non-heaving structure; and lowering the extended tubular string into the subsea wellbore. |
申请公布号 |
EP3084114(A2) |
申请公布日期 |
2016.10.26 |
申请号 |
EP20140824249 |
申请日期 |
2014.12.09 |
申请人 |
WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
发明人 |
BANSAL, RAM K.;RING, LEV;HANNEGAN, DON M. |
分类号 |
E21B19/06;E21B17/07;E21B19/16;E21B23/01;E21B31/20;E21B33/129;E21B47/09 |
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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