Offshore platform structure and system

Details Offshore platform structure and system Offshore platform structure and system

1993-09-30

1995-09-05

Reese, Randolph A.

Hydraulic and earth engineering

Marine structure or fabrication thereof

Floatable to site and supported by marine floor

4051951, 405196, E02B 1700

Patent

active

054473918

ABSTRACT:
An offshore platform structure is disclosed for facilitating use of a jack-up rig for well operations in deepwater applications while reducing the jacket size and increasing the flexibility of field development. The structure has a bottom founded jacket base and a surface tower supported by the jacket base and extending above the ocean surface. A platform deck is supported by the surface tower and a subsea rig support interface is presented at the top of the jacket base which is adapted to receive the jack-up rig for well operations. Another aspect of the present invention is an offshore platform system which includes a jack-up rig having a plurality of legs extending from a combination hull/deck structure and engaging the rig support interface. Well operations equipment provided by the jack-up rig which includes a cantilever deck extending from the combination hull and deck structure to present a derrick in substantial vertical alignment with the surface tower.

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