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:
Aug. 09, 1983
Filed:
Apr. 20, 1981
Applicant:
Inventor:
Fredric L Hettinger, Ojai, CA (US);
Assignee:
Vetco Offshore, Inc., Ventura, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166345 ; 166346 ; 166364 ; 175-7 ;
Abstract
A production riser assembly for producing oil to a floating platform includes a central riser (22) and a plurality of production risers (34) annularly spaced around the central riser. The central riser has a flexible joint (26) with a hydraulic connector (82) therebelow. Each production riser has a flexible hose (47) at its lower end which is connectable to flowline subs (46) located in spaced relation from the central riser connector. Hydraulically operated connectors (45) are located at the bottom end of each flexible pipe, and each riser is independently tensioned.