发明名称 |
METHOD AND SYSTEM FOR RETRIEVING RISER FOR STORM EVACUATON |
摘要 |
A method for preparing to move a floating structure away from a wellbore drilled below the bottom of a body of water includes filling a riser extending from the bottom of the body of water to the floating structure with water. The water in the riser is displaced to a selected first depth below the water surface. The riser is sealed at a second selected depth shallower than the first selected depth. The portion of the riser above the second selected depth is withdrawn onto the floating structure.
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申请公布号 |
WO2007133929(A3) |
申请公布日期 |
2008.07.10 |
申请号 |
WO2007US67817 |
申请日期 |
2007.04.30 |
申请人 |
NOBLE DRILLING SERVICES INC.;DEUL, HANS, H.J. |
发明人 |
DEUL, HANS, H.J. |
分类号 |
E21B7/12 |
主分类号 |
E21B7/12 |
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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