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:
May. 29, 2018
Filed:
Apr. 20, 2015
Applicant:
Acergy France Sas, Suresnes, FR;
Inventors:
Assignee:
Acergy France SAS, Suresnes, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 17/01 (2006.01); E21B 36/00 (2006.01); E21B 43/01 (2006.01); E21B 29/12 (2006.01); E21B 17/08 (2006.01); E21B 43/12 (2006.01);
U.S. Cl.
CPC ...
E21B 43/122 (2013.01); E21B 17/01 (2013.01); E21B 17/015 (2013.01); E21B 36/00 (2013.01); E21B 36/005 (2013.01); E21B 36/006 (2013.01);
Abstract
A subsea riser system with a gas-lift facility has a production riser having a riser conduit and at least one lift gas injection port communicating with the riser conduit. An umbilical is arranged to supply lift gas to the lift gas injection port. A heating unit is positioned to act on a downstream end region of the umbilical adjacent to the lift gas injection port. A method of providing lift gas to a subsea riser system includes the steps of conveying lift gas toward a production riser and, before injecting the lift gas into the production riser, heating the lift gas locally adjacent to the production riser.