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:
Feb. 05, 2019
Filed:
Mar. 18, 2015
National Oilwell Varco Denmark I/s, Brondby, DK;
Kristian Glejbol, Glostrup, DK;
NATIONAL OILWELL VARCO DENMARK I/S, Brøndby, DK;
Abstract
The invention concerns a flexible pipe for offshore applications, such as for use as a riser in oil production. The flexible pipe has a longitudinal axis and contains a pressure resilient core pipe structure with an inner surface defining a bore, and at least a pair of cross wound and non-bonded tensile armor layers surrounding said core pipe structure. The pressure resilient core pipe structure contains an embedded pressure armor structure, wherein the embedded pressure armor structure contains a plurality of layers of helically wound continuous fibers, wound with a winding angle of about 60 degrees or more relative to the longitudinal axis of the pipe and embedded in a cured polymer matrix. The fibers are individually bonded to the cured polymer matrix. Preferably each of said layers of helically wound continuous fibers have a fiber density of at least about 40%.