Patent ID: 9458680
Filing Date: 2016-10-04
CPC Classification: E21B

Claim Text:
1. An offshore drilling rig comprising a drill floor deck having a hole defining a first well centre; a first mast upwardly extending relative to the drill floor deck, the first mast defining a first mast footprint on the drill floor deck, wherein the first mast is displaced from and located on a first side of the first well centre such that the first mast footprint is outside the first well centre; a first hoisting system supported by the first mast and configured for hoisting and lowering tubular equipment through the first well centre; and first pipe handling equipment for moving tubular equipment to the first hoisting system so as to allow the first hoisting system to hoist or lower the tubular equipment through the first well centre; wherein the drill floor deck comprises: at least a first open drill floor deck area located adjacent the first mast and outside the first mast footprint; and skid beams installed on the first open drill floor deck area and configured to enable equipment to be skidded across the first open drill floor deck area; wherein the drill floor deck comprises a rotary table at the first well centre, and the skid beams are substantially level with a portion of the drill floor deck surrounding the hole defining the first well centre.