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:
Nov. 21, 2017
Filed:
Dec. 09, 2014
Applicant:
Itp SA, Louveciennes, FR;
Inventors:
Christian Bonigen, Carrières sous Poissy, FR;
Christian Geertsen, Versailles, FR;
Assignee:
ITP SA, Louveciennes, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 1/12 (2006.01); F16L 1/225 (2006.01); F16L 1/235 (2006.01); F16L 1/23 (2006.01); F16L 1/26 (2006.01); F16L 1/18 (2006.01); F16L 59/065 (2006.01); F16L 1/19 (2006.01); B63B 35/03 (2006.01); F16L 1/16 (2006.01); F16L 59/14 (2006.01);
U.S. Cl.
CPC ...
F16L 1/18 (2013.01); B63B 35/03 (2013.01); F16L 1/165 (2013.01); F16L 1/19 (2013.01); F16L 1/235 (2013.01); F16L 59/065 (2013.01); F16L 59/143 (2013.01);
Abstract
The invention concerns a process and a device for laying a subsea pipeline according to the J-lay or S-lay method wherein straight sections are mounted onshore, dried and degassed then closed by plugs. The sections are loaded on a pipe-laying ship, are separated from their plugs before the welding. At the welding of each bulkhead a short pumping is operated to reduce the pressure in the part of the annulus located between the two last bulkheads and then the opening leading to the annulus are sealed.