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:
Jan. 03, 2017
Filed:
Jan. 07, 2011
Morten Eidem, Trondheim, NO;
Tore Weltzin, Stavanger, NO;
Gaute Grindhaug, Hafrsfjord, NO;
Jafar Abdollahi, Trondheim, NO;
Morten Eidem, Trondheim, NO;
Tore Weltzin, Stavanger, NO;
Gaute Grindhaug, Hafrsfjord, NO;
Jafar Abdollahi, Trondheim, NO;
STATOIL PETROLEUM AS, Stavanger, NO;
Abstract
A centralizer includes a centralizer body to be situated at the outer surface of a pipe string in the form of casing, liner, or the like used while drilling, the centralizer body being formed with a plurality of outer centralizer blades arranged in an inclined manner to the longitudinal axis thereof, wherein the centralizer body has an separate split inner tube secured to the pipe string by means of a press fit, and low friction inner surface of the centralizer body and separate center tube facing each other are made from low friction material.