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. 25, 1998
Filed:
May. 02, 1997
William Barron, Aberdeen, GB;
Ian Alistair Kirk, Aberdeen, GB;
Alistair Bertram Clark, Aberdeen, GB;
Downhole Products (UK) Limited, Aberdeen, GB;
Abstract
A casing centraliser (10) includes an annular body (12) and a substantially cylindrical bore (16) extending longitudinally through the body (12). A number of blades (14) extend longitudinally along the body (12) and are circumferentially distributed around the body (12) to define a flow path between each adjacent pair of blades (14). Each flow path provides a fluid flow path between longitudinally opposite ends of the centraliser (10) and each blade (14) has a radially outer edge providing a well bore contacting surface. The cylindrical bore (16) through the body (12) is a clearance fit around casing intended to be centralised by the centraliser (10). The centraliser (10) is typically manufactured from a material which includes zinc and is preferably a zinc alloy.