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:
Dec. 11, 2012
Filed:
Sep. 20, 2007
Applicants:
Tom Grimseth, Oslo, NO;
Inge Wold, Oslo, NO;
John Daniel Friedemann, Gjettum, NO;
Christian Borchgrevink, Langhus, NO;
Inventors:
Tom Grimseth, Oslo, NO;
Inge Wold, Oslo, NO;
John Daniel Friedemann, Gjettum, NO;
Christian Borchgrevink, Langhus, NO;
Assignee:
Vetco Gray Scandinavia AS, Sandvika, NO;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/00 (2006.01); E21B 37/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and an apparatus for establishing a hydrate free regime in a subsea production flowline before discharging into the subsea production flowline a production flow of hydrate prone hydrocarbon product pursuant to a shutdown or at an initial start of production. The hydrate free regime is achieved by injecting into the flowline a heated water volume in advance of discharging the hydrocarbon product from the subsea production system.