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. 09, 2021
Filed:
Apr. 03, 2019
Applicant:
National Oilwell Varco Denmark I/s, Brondby, DK;
Inventor:
Inger-Margrete Procida, Hellerup, DK;
Assignee:
NATIONAL OILWELL VARCO DENMARK I/S, Brondby, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 11/08 (2006.01); E21B 17/20 (2006.01); F16L 11/12 (2006.01); B32B 15/085 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01);
U.S. Cl.
CPC ...
E21B 17/20 (2013.01); F16L 11/083 (2013.01); F16L 11/12 (2013.01); B32B 15/085 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 2264/0207 (2013.01); B32B 2264/101 (2013.01); B32B 2307/536 (2013.01); B32B 2307/72 (2013.01); B32B 2597/00 (2013.01);
Abstract
An unbonded flexible pipe for offshore fluid transportation is disclosed. The pipe includes from inside and outwards a sealing sheath, a pressure armor layer, at least one tensile armor layer, at least one support layer and an extruded external protective polymer sheath. The at least one support layer includes at least one support strip which is helically wound with a winding angle α of at least about 80 degrees to the longitudinal center axis to provide strip windings along the length of the pipe and the at least one support strip includes a thermoplastic vulcanizate (TPV).