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.
Patent No.:
Date of Patent:
Dec. 25, 2001
Filed:
Dec. 09, 1998
Olav Vaage Ellefsen, Forus, NO;
Kåre Syvertsen, Arendal, NO;
Den Norske Stats Oljeselskap A. S., Stavanger, NO;
Abstract
An anchoring system for the production of hydrocarbons at sea by employing a moored production vessel or ship in which the ship is equipped with a mooring apparatus, preferably at the bow portion, and with at least one connection unit for a production riser from the seabed. Included is an anchor located at the seabed, as well as at least one anchor line adapted to connect the anchor to the mooring apparatus on the ship. There being provided a permanent anchor, preferably in the form of a suction anchor, gravitation anchor, or pile anchor. The anchor being provided with a swivel mechanism for the anchoring line, preferably with a buoyant body attached at a middle portion of the anchoring line, and whereby the riser is in the form of at least one flexible hose, the lower end of which is connected to said swivel mechanism. The flexible hose contains at least two passages for hydrocarbons and possibly other fluids.