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US 12,179,890 B2Granted
Offshore platform with vertical column assembly
AssigneeOil States Industries, Inc.
InventorsPeter Craig Masson, Jonathan Frederick Jury, Garry Robert Stephen, Ryan Aldus, Kirsten McNeill, Adnan Hossain, John Shanks
Life of this patent
Estimating the term…
Abstract
An apparatus and methods for installation of an offshore platform for supporting equipment installations is provided. The apparatus includes a platform configured to support offshore equipment supported by a structure such as a modular column assembly. The modular column assembly can be comprised of main barrel joint bundles.
Claims19
An offshore installation comprising:
- a top platform having a weight and comprising a top surface and a bottom surface;
- a foundation configured to be disposed on a seafloor;
- a modular vertical column assembly comprising:
- a central longitudinal axis;
- a first end fixedly connected to the top platform;
- a second end connected to the foundation;
- a first modular vertical support member extending from the first end to the second end, such that the modular vertical column assembly supports the weight of the top platform;
- a first plurality of tendons configured to extend from the top platform to the foundation;
- and
- a plurality of lateral supports configured to extend from the top platform to the seafloor.
7 more elements
A method for installing an offshore installation on a seafloor, comprising:
- mounting offshore equipment on a top frame structure having a weight and comprising a top surface and a bottom surface;
- transporting the top frame structure and offshore equipment to an installation site;
- installing a foundation and a lower portion of a modular vertical column assembly on the seafloor at the installation site;
- positioning the top frame structure above the foundation;
- deploying a first plurality of tendons from the top frame structure to the foundation;
- installing an upper portion of the modular vertical column assembly;
- lifting an end of the modular vertical column assembly to contact the top frame structure, such that the modular vertical column assembly supports the weight of the top frame structure and offshore equipment;
- applying tension to the first plurality of tendons;
- attaching a plurality of lateral supports to the top frame structure;
- and
- extending the plurality of lateral supports from the top frame structure to the seafloor.
8 more elements
A method for installing an offshore installation on a seafloor, comprising:
- mounting offshore equipment on a top frame structure having a weight and comprising a top surface and a bottom surface;
- transporting the top frame structure and offshore equipment to an installation site;
- installing a foundation and a lower portion of a modular vertical column assembly on the seafloor at the installation site;
- installing an upper portion of the modular vertical column assembly;
- positioning the top frame structure above the foundation;
- lifting an end of the modular vertical column assembly to contact the top frame structure, such that the modular vertical column assembly supports the weight of the top frame structure and offshore equipment;
- lifting the foundation off the seafloor with the modular vertical column assembly;
- deploying a first plurality of tendons from the top frame structure to the foundation;
- lowering the foundation to the seafloor via the first plurality of tendons;
- applying tension to the first plurality of tendons;
- attaching a plurality of lateral supports to the top frame structure;
- and
- extending the plurality of lateral supports from the top frame structure to the seafloor.
10 more elements
Dependencies are inferred from the claim text.