Hydraulic and earth engineering – Marine structure or fabrication thereof – With pivotal connection between work deck and base
Patent
1994-09-30
1996-01-23
Corbin, David H.
Hydraulic and earth engineering
Marine structure or fabrication thereof
With pivotal connection between work deck and base
4052231, E02B 1700
Patent
active
054860709
ABSTRACT:
A method for conducting offshore well operations is disclosed in which a compliant platform is restrained out of its normal position substantially over a well pattern by adjusting a first lateral mooring system connecting the compliant platform to a first array of anchors secured to an ocean floor. An offshore drilling vessel is then positioned over a selected well site of the well pattern at a location at the surface of the water not accessible to the offshore drilling vessel with the compliant platform in its normal position by adjusting a second lateral mooring system connecting the compliant platform to a second array of anchors on the ocean floor. Well operations are then conducted through a substantially vertical riser while maintaining a clearance to prevent direct contact between the compliant platform and the offshore drilling vessel.
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Corbin David H.
Shell Oil Company
Smith Mark A.
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