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. 20, 2020
Filed:
Jan. 02, 2017
Applicant:
Interwell Norway As, Hafrsfjord, NO;
Inventor:
Espen Hiorth, Trondheim, NO;
Assignee:
Interwell Norway AS, Hafrsfjord, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/12 (2006.01); E21B 33/134 (2006.01); E21B 34/06 (2006.01);
U.S. Cl.
CPC ...
E21B 33/1208 (2013.01); E21B 33/12 (2013.01); E21B 33/134 (2013.01); E21B 34/063 (2013.01);
Abstract
A well tool device may include a housing having an inner surface defining a through bore, a frangible glass body with upper and lower chamfered supporting surfaces and a seat for supporting the frangible glass body in relation to the housing. Additionally, a sealing device is provided between the frangible disc and the seat. Further, the frangible glass body is provided as one glass body with a barrier portion supported by the seat and a neck portion protruding in the direction of the through bore, where the diameter of the neck portion is smaller than the diameter of the barrier portion.