Telescoping truss platform
AssigneeCSO Aker Maritime, Inc.
InventorsLyle D. Finn, J. Lynn LeJune
Life of this patent
Estimating the term…
Abstract
A semisubmersible floating platform for use in marine environments. The platform comprises a truss telescopingly mounted to the platform and movable between upper and lower positions with respect to the platform. At least one riser buoyancy member is telescopingly mounted to the platform and movable between upper and lower positions with respect to the platform. For each riser buoyancy member, at least one guide is attached to the truss and adjacent the buoyancy member for guiding and laterally restraining the buoyancy member.
Claims6
A method of installation of a floating, semi-submersible platform at a production location, the platform having a truss telescopingly mounted therein and having riser buoyancy members telescopingly received in the truss therein, the riser buoyancy members being laterally restrained by guides attached to the truss, the method comprising:
- towing the platform to the production location at a relatively shallow, towing depth with the truss and riser buoyancy members in a raised position within the platform;
- lowering the truss telescopingly to a lowered position extending below the platform, at least some of the guides laterally restraining the riser buoyancy members throughout the lowering process;
- lowering the riser buoyancy members telescopingly into the lowered truss, at least some of the guides laterally restraining the riser buoyancy members throughout the lowering process;
- ballasting down the platform to a relatively deeper operating depth;
- and
- installing risers through the riser buoyancy members for connection to wells on the sea floor.
Dependencies are inferred from the claim text.