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:
Sep. 01, 2015
Filed:
Sep. 02, 2010
Steingrim Thommesen, Oslo, NO;
Steingrim Thommesen, Oslo, NO;
Aker Oilfield Services Operation AS, Oslo, NO;
Abstract
Telescoping riser arrangement forming part of a riser string () connecting a subsea well and a floating installation. The riser arrangement is adapted to be switched between a high pressure mode, in which an upper part of the riser assembly will move vertically with respect to the installation when the installation heaves, and a low pressure mode in which the upper part of the riser assembly will move vertically along with the installation when the installation heaves. In the low pressure mode, a low pressure inner sleeve () is adapted to reciprocate inside a high pressure outer sleeve (), the reciprocating heave path being above the position of the inner sleeve () in the high pressure mode. In the high pressure mode, the telescoping section of the low pressure inner sleeve () is enclosed within a high pressure compartment.