Drilling rig
First Claim
1. An offshore drilling rig comprising:
- a drill floor deck having a hole defining a first well centre;
a support structure including one or more guide members, displaced from and located on a first side of the first well centre;
a mounting structure for suspending suspendable auxiliary equipment from an elevated position above the drill floor deck and into the first well centre;
a first hoisting system configured for hoisting and lowering tubular equipment through the first well centre, wherein the first hoisting system is operable independently of the mounting structure;
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; and
wherein;
the mounting structure is connected to the one or more guide members of the support structure such that the one or more guide members of the support structure supports the mounting structure and the suspended suspendable auxiliary equipment, and the mounting structure is movable vertically along the guide members of the support structure between at least a lower position and said elevated position; and
the lower position is for rigging up the suspendable auxiliary equipment to the mounting structure at the lower position, and the elevated position is for allowing lowering or hoisting of the suspendable auxiliary equipment suspended from the mounting structure through the first well centre.
2 Assignments
0 Petitions
Accused Products
Abstract
An offshore drilling rig comprising a drill floor deck having a hole defining a first well center. The drilling rig may further include a first hoisting system configured for hoisting and lowering tubular equipment through the first well center. 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 center. 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 center; 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 center.
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Citations
33 Claims
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1. An offshore drilling rig comprising:
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a drill floor deck having a hole defining a first well centre; a support structure including one or more guide members, displaced from and located on a first side of the first well centre; a mounting structure for suspending suspendable auxiliary equipment from an elevated position above the drill floor deck and into the first well centre; a first hoisting system configured for hoisting and lowering tubular equipment through the first well centre, wherein the first hoisting system is operable independently of the mounting structure; 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; and wherein; the mounting structure is connected to the one or more guide members of the support structure such that the one or more guide members of the support structure supports the mounting structure and the suspended suspendable auxiliary equipment, and the mounting structure is movable vertically along the guide members of the support structure between at least a lower position and said elevated position; and the lower position is for rigging up the suspendable auxiliary equipment to the mounting structure at the lower position, and the elevated position is for allowing lowering or hoisting of the suspendable auxiliary equipment suspended from the mounting structure through the first well centre. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of suspending suspendable auxiliary equipment from an elevated position above a drill floor deck of a drilling rig;
- the drill floor deck having a hole defining a first well centre, the drilling rig comprising the drill floor deck, a first hoisting system configured for hoisting and lowering tubular equipment through the first well centre;
a support structure displaced from and located on a first side of the first well centre supporting said first hoisting system; and
first pipe handling equipment for moving the 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 method comprising;providing a mounting structure, separate from the first hoisting system, at a first position that is lower than the elevated position; providing auxiliary equipment comprising an on-deck auxiliary component and suspendable auxiliary component; suspending the suspendable auxiliary equipment from the mounting structure at the first position; elevating the mounting structure having the suspendable auxiliary equipment suspended from it to said elevated position above the drill floor deck along one or more guide members of the support structure; and suspending the suspendable auxiliary equipment through the first well centre via said mounting structure. - View Dependent Claims (26, 27, 28)
- the drill floor deck having a hole defining a first well centre, the drilling rig comprising the drill floor deck, a first hoisting system configured for hoisting and lowering tubular equipment through the first well centre;
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29. An offshore drilling rig comprising:
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a drill floor deck having a hole defining a first well centre; a first mast upwardly extending relative to the drill floor deck, wherein the first mast is displaced from and located on a first side of the first well centre; one or more guide members supported by the first mast; a mounting structure supported by the one or more guide members so that the mounting structure is movable between a first position and a second position that is elevated above the first position; 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 the 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 mounting structure is movable vertically along the one or more guide members, independently of the first hoisting system, between the first position for rigging up suspendable auxiliary equipment to the mounting structure at the first position, and the elevated second position, thus allowing lowering or hoisting of the suspendable auxiliary equipment suspended from the mounting structure through the first well centre. - View Dependent Claims (30, 31, 32, 33)
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Specification