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:
Feb. 07, 2017
Filed:
Oct. 12, 2011
Eric Gard, Fontaines-sur-Saone, FR;
Eliette Pinel, Sainte-Euphemie, FR;
Mikael Petit, Villefranche-sur-Saone, FR;
Mohamed Gouider, Caluire-et-Cuire, FR;
Eric Gard, Fontaines-sur-Saone, FR;
Eliette Pinel, Sainte-Euphemie, FR;
Mikael Petit, Villefranche-sur-Saone, FR;
Mohamed Gouider, Caluire-et-Cuire, FR;
VALLOUREC OIL AND GAS FRANCE, Aulnoye-Aymeries, FR;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
The invention concerns a threaded tubular component for drilling or working hydrocarbon wells, said tubular component having at one of its ends () a threaded zone () produced on its outer or inner peripheral surface depending on whether the threaded end is male or female in type, characterized in that at least a portion of the end () is coated with a lubricating dry film () the matrix () of which comprises at least one migrating sliding agent () belonging to the oils or waxes family and principally distributed at the surface of the lubricating dry film () such that the coefficient of friction of the film () is less than 0.07 at loads of less than 40 N while the coefficient of friction of the film () is more than 0.1 at loads of more than 200 N.