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. 08, 2020
Filed:
Jan. 20, 2017
Saipem S.a., Montigny le Bretonneux, FR;
Cementys, Paris, FR;
Francois-Regis Pionetti, La Baleine, FR;
Jalil Agoumi, Le Kremlin-bicetre, FR;
Axel Sundermann, Fontenay-les-briis, FR;
Jean-Baptiste Paris, Paris, FR;
Vincent Lamour, Paris, FR;
Saipem S.A., Montigny le Bretonneux, FR;
Abstract
A method of monitoring mechanical behavior of an undersea pipe () transporting fluid under pressure and made by assembling a plurality of unit pipe elements (). A calibration step is performed consisting of using a measurement cable having an optical fiber sensor to measure deformations experienced by each pipe element while it is subjected on land to various mechanical stresses in predetermined directions and magnitudes, and, on the basis of the measurements, establishing the mechanical signature of each pipe element. A monitoring step is performed consisting of using a measurement cable () having an optical fiber sensor that makes uses Brillouin backscattering and is helically positioned at constant pitch (p) on each pipe element with the handedness of the helical pitch alternating for two adjacent pipe elements to recover variations in optical signal injected into the sensors while the pipe is in service.