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. 25, 2014
Filed:
Oct. 25, 2010
John Arthur Mair, Aberdeen, GB;
Thomas Schüller, Wittingen, DE;
Gernold Holler, Wittingen-Knesebeck, DE;
Friedrich Henneicke, Wittingen, DE;
Joachim Banse, Wittingen, DE;
John Arthur Mair, Aberdeen, GB;
Thomas Schüller, Wittingen, DE;
Gernold Holler, Wittingen-Knesebeck, DE;
Friedrich Henneicke, Wittingen, DE;
Joachim Banse, Wittingen, DE;
Subsea 7 Limited, Sutton, GB;
Abstract
A method is disclosed for reeling or unreeling a pipeline having an inner corrosion-resistant metallic liner that is tightly fitted within the pipeline. To minimize or avoid wrinkling of the liner during the reeling or unreeling, a length of the pipeline is internally pressurized in a two-stage pressurizing process, and then the length of pipeline is reeled or unreeled, as the case may be. In the first stage of the pressurizing process, the length of the pipeline is filled with fluid at an elevated pressure, and in the second stage the fluid pressure is raised to a higher pressure, which may be 25 bars or more, absolute.