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:
Oct. 23, 2012
Filed:
Sep. 09, 2008
Magnar Tveiten, Sandnes, NO;
Øyvind Stokka, Sandnes, NO;
Erling Kleppa, Jørpeland, NO;
Tom Norland, Hommersak, NO;
Ole Sevheim, Stavanger, NO;
Magnar Tveiten, Sandnes, NO;
Øyvind Stokka, Sandnes, NO;
Erling Kleppa, Jørpeland, NO;
Tom Norland, Hommersak, NO;
Ole Sevheim, Stavanger, NO;
Petroleum Technology Company AS, Stavanger, NO;
Abstract
The present invention regards a device designed for injection of fluids in a well bore, typically an offshore well bore for petroleum production and gas injection/gas lift system for fluid injection. The device comprises a outer hollow housing with an internal body moveable within the outer housing which in a first closed position is closed with a metal to metal seal system between the outer housing and the internal body, which internal body is operated by pressure differential across the internal body. The internal movable body is connected to the outer hollow housing by means of a retainer key. The retainer key comprises a shear arrangement and is arranged to keep the valve in a fixed closed position, where fluid pressure is to overcome the pretension of the retainer key in order to open the device. When the device is shear opened, it can be kept in this open position as the retainer key is locked to the outer hollow housing.