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:
Jun. 29, 2010
Filed:
Nov. 10, 2006
Jack Pollack, Houston, TX (US);
David C. Riggs, Coppell, TX (US);
Jack Pollack, Houston, TX (US);
David C. Riggs, Coppell, TX (US);
Single Buoy Moorings, Inc., , CH;
Abstract
A pipe string () is pulled out by a tug boat () from a floating structure () such as a production vessel, as pipe sections () are connected in series on the vessel, to eventually lay the pipe string in a catenary curve from the vessel to the sea floor and then along the sea floor to a distant subsea well head (). To save time and cost in coupling the pipe sections, lower fatigue resistant pipe couplings, such as non weld-on couplings () that include a threaded sleeve (), are used to connect pipe sections that will lie in a quiescent zone such as on the sea floor (zone Az), and in a zone (Cz) lying along the middle of the catenary curve. Higher fatigue resistant pipe couplings such as weld-on couplings () are used along active zones such as top and bottom zones (Dz, Bz) of the catenary curve.