DRILLING RIG

摘要

An offshore drilling rig comprising a drill floor deck having a hole defining a first well centre. The drilling rig may further include a first hoisting system configured for hoisting and lowering tubular equipment through the first well centre. The drilling rig may further include first pipe handling equipment for presenting 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. The drilling rig may include a mounting structure, separate from the first hoisting system for suspending suspendable auxiliary equipment from an elevated position above the drill floor deck, allowing the auxiliary equipment to be lowered or hoisted through the first well centre; wherein the mounting structure is movable between a lower position for rigging up auxiliary equipment to the mounting structure, and an elevated position allowing lowering or hoisting of auxiliary equipment suspended from the mounting structure through the first well centre.

主权项

1. An offshore drilling rig comprising:
a drill floor deck having a hole defining a first well centre; a first hoisting system configured for hoisting and lowering tubular equipment through the first well centre; 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; a support structure; and a mounting structure separate from the first hoisting system, for suspending equipment from an elevated position above the drill floor deck; wherein the mounting structure is connectable to the support structure at least at said elevated position such that the support structure supports the mounting structure and the suspended equipment at least at the elevated position; and wherein the mounting structure is movable between at least a lower position for rigging up auxiliary equipment to the mounting structure, and said elevated position.