The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 10, 2001

Filed:

May. 26, 1999
Applicant:
Inventors:

Kåre Breivik, Tau, NO;

Atle Ingebrigtsen, Nesttun, NO;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/3013 ;
U.S. Cl.
CPC ...
E21B 4/3013 ;
Abstract

A system for offshore production of oil or gas, comprising a surface vessel having a means for maintaining a desired position and orientation, a bottom installation at the seabed for at least two production wells, and risers for connecting the bottom installation to the vessel. The vessel is provided with drilling equipment for wells at the seabed and with process equipment for produced oil or gas. The bottom installation comprises a template having its foundation at the seabed and being provided with a manifold unit and is designed with at least two well head sections adapted for installing associated Christmas trees. A drill string is adapted to extend from the drilling equipment on the vessel to an operation module at the bottom installation, and a product riser is adapted to connect the operation module to the process equipment on the vessel.


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