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:
Jul. 17, 2018
Filed:
Apr. 16, 2015
Applicant:
Ifp Energies Nouvelles, Rueil-Malmaison, FR;
Inventors:
Emmanuel Persent, Croissy sur Seine, FR;
Navid Saeedi, Alfortville, FR;
Gerard Papon, Les Essarts le Roi, FR;
Eleonore Roguet, Rueil-Malmaison, FR;
Assignee:
IFP Energies nouvelles, Rueil-Malmaison, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 17/08 (2006.01); E21B 17/01 (2006.01); E21B 17/046 (2006.01); E21B 17/18 (2006.01);
U.S. Cl.
CPC ...
E21B 17/085 (2013.01); E21B 17/01 (2013.01); E21B 17/046 (2013.01); E21B 17/18 (2013.01);
Abstract
The present invention relates to a riser section () equipped with an external locking ring (). Locking ring () cooperates with a male connector element () and a female connector element () by means of a series of studs. The invention also relates to a riser consisting of several sections () and to the use of the riser for carrying out an offshore drilling operation.