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:
Mar. 20, 2012
Filed:
Apr. 26, 2005
Vincent Marcel Ghislain Alliot, Rue Clauzel, FR;
Vincent Marcel Ghislain Alliot, Rue Clauzel, FR;
Acergy France S.A., Suresnes, FR;
Abstract
The invention provides a marine riser apparatus () for use in the production of hydrocarbons from offshore wells and an associated method of installation of the apparatus at sea. The riser tower comprises rigid pipelines arranged in a riser tower bundle () and extending from a wellhead on the seabed () to a point below the sea surface where they are connected to flexible jumpers () which extend from the tower structure to connect the tower structure to a surface vessel or platform (). The riser apparatus further comprises a buoyancy device () attached to the riser tower bundle, such that the buoyancy device is located above and exerts a buoyancy force on the riser tower, the buoyancy module also supporting an intermediate section of at least one of the jumpers.