Patent ID: 9458671
Filing Date: 2016-10-04
CPC Classification: B63B,E21B

Claim Text:
1. A tension leg platform comprising: a deck structure that comprises a drilling deck configured for supporting topsides equipment and a production deck equipped with a well bay; an upper surface on the production deck and an undersurface on the production deck and a through opening in the production deck from the upper surface to the undersurface forming the well bay; the production deck further comprising a drilling riser assembly that comprises a drilling riser tension joint and a drilling riser tensioner assembly, the drilling riser assembly being supported in a drilling riser transfer assembly, wherein the drilling riser transfer assembly comprises a transporter adapted for translational movement within the through opening along a length of the well bay from a first drilling position to a second drilling position, wherein the drilling riser assembly is configured to be used for a drilling operation in the first drilling position and the second drilling position, the production deck is situated below the drilling deck in the deck structure, and a position of the transporter is held side-to-side by fixed rails forming a part of the deck structure.