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:
Nov. 06, 2007
Filed:
Oct. 25, 2004
Espen Hiorth, Trondheim, NO;
Asbjörn Nervik, Saupstad, NO;
Espen Hiorth, Trondheim, NO;
Asbjörn Nervik, Saupstad, NO;
Bronnteknologiutvikling AS, Trondheim, NO;
Abstract
Downhole plug, especially designed for closing an annular conduit in an oil or gas well, under high pressure and temperature. It has two radially expandable ring elements, which are arranged on a carrying cylindrical element, between two mutually axially movable pressure elements, having an expansion sleeve in between. The ring elements can, by insertion of the downhole plug in a well, be expanded from an inner position, seen radially, to a sealing position against the wall of the well. The radially expandable ring elements, comprises a closed series of circumferentially overlapping seal elementsA,A. By the expanding movement they are mutually moved in the circumferential direction, thereby maintaining a seal against each other. They form an outer sealing surface, which can provide a seal against a cylindrical pipe wall, and they have an inwards facing sealing surface