Patent ID: 11867149
Assignee: OIL STATES INDUSTRIES, INC.
Field: Civil engineering (Other fields)
Classification: CPC B  F  E  Y | IPC E  F

Claim 5:
6. A method for installing an offshore installation on a seafloor, comprising:
mounting offshore equipment having a first weight on a top frame structure having a second 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 vertical column assembly on the seafloor at the installation site;
positioning the top frame structure above the foundation;
lifting an end of the vertical column assembly to contact the bottom surface of the top frame structure, such that the vertical column assembly supports the first weight and the second weight of the top frame structure and offshore equipment;
lifting the foundation off the seafloor with the vertical column assembly;
deploying tendons from the top frame structure to the foundation;
lowering the foundation to the seafloor via the tendons; and
applying tension to the tendons.