Dedicated riser tensioner apparatus, method and system
First Claim
1. An apparatus for supporting risers in a floating platform, the apparatus comprising:
- a hull top surface;
a table disposed above the hull top surface, the table comprising a grid structure having columns and rows that define riser openings;
a riser received in each of the riser openings; and
a riser tensioner disposed in each of the riser openings and attached to the table, each riser tensioner comprising a plurality of cylinders selected from the group consisting of pneumatic cylinders and hydraulic cylinders;
wherein a first riser tensioner in a first riser opening is symmetrically paired by a cross coupling to a second riser tensioner in a second riser opening, the cross coupling being effected by interconnecting plumbing between each cylinder of the first riser tensioner and a corresponding paired cylinder of the second riser tensioner.
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Accused Products
Abstract
The invention is an apparatus, method and system for supporting risers in a floating platform. The apparatus comprises a table disposed above a hull-top surface, a first riser opening in the table, and a first dedicated riser tensioner attached to the table and disposed about the first riser opening. The apparatus further comprises a second riser opening, and a second dedicated riser tensioner attached to the table and disposed about the second riser opening. The method comprises tensioning a first riser with a first dedicated riser tensioner, and tensioning a second riser with a second dedicated riser tensioner, wherein the first dedicated riser tensioner is responsive to the second dedicated riser tensioner. The system comprises a mechanism for tensioning a first and a second riser, wherein the mechanism for tensioning the first riser is responsive to the second riser.
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Citations
11 Claims
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1. An apparatus for supporting risers in a floating platform, the apparatus comprising:
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a hull top surface;
a table disposed above the hull top surface, the table comprising a grid structure having columns and rows that define riser openings;
a riser received in each of the riser openings; and
a riser tensioner disposed in each of the riser openings and attached to the table, each riser tensioner comprising a plurality of cylinders selected from the group consisting of pneumatic cylinders and hydraulic cylinders;
wherein a first riser tensioner in a first riser opening is symmetrically paired by a cross coupling to a second riser tensioner in a second riser opening, the cross coupling being effected by interconnecting plumbing between each cylinder of the first riser tensioner and a corresponding paired cylinder of the second riser tensioner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification