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:
Sep. 22, 2015
Filed:
Feb. 16, 2011
Magnar Tveiten, Sandnes, NO;
Erling Kleppa, Jørpeland, NO;
Øyvind Stokka, Sandnes, NO;
Ole Sevheim, Stavanger, NO;
Magnar Tveiten, Sandnes, NO;
Erling Kleppa, Jørpeland, NO;
Øyvind Stokka, Sandnes, NO;
Ole Sevheim, Stavanger, NO;
Petroleum Technology Company AS, Stavanger, NO;
Abstract
The present invention relates to a valve system for use in a wellbore, the system comprising a side pocket mandrel and one or more well tools, where the side pocket mandrel () comprises an elongated body section () provided with connection means () at its ends, the elongated body section () being provided with a substantially fully open main bore () for alignment with the well tubing () and an offset side pocket bore (). At least one through opening () is provided in the side pocket mandrel (), leading into the side pocket bore (), and at least one through opening () is provided in the internal wall (), leading into the main bore (), where the at least two openings () are in fluid communication through the side pocket bore (), in which side pocket bore () at least two valves () are arranged in series to form a double fluid barrier between the main bore () and an outside of the pocket mandrel (), the at least two valves () being independently retrievable through at least one installation opening arranged in the internal wall () of the side pocket mandrel ().