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:
May. 31, 2016
Filed:
Mar. 18, 2010
Applicant:
Kjetil Johannessen, Trondheim, NO;
Inventor:
Kjetil Johannessen, Trondheim, NO;
Assignee:
STATOIL PETROLEUM AS, Stavanger, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/12 (2006.01); E21B 34/08 (2006.01); E21B 33/12 (2006.01);
U.S. Cl.
CPC ...
E21B 43/12 (2013.01); E21B 33/1208 (2013.01); E21B 34/08 (2013.01);
Abstract
A method and apparatus is disclosed for controlling the flow of fluid in oil and/or gas production, involving a control device or an autonomous valve () operating by the Bernoulli principle and comprising a moveable disk or body () provided within a housing () for opening and closing said valve (), involving use of a material () within the valve () that changes its properties as to shape and/or volume and/or elastic modulus when exposed to a chemical substance contained in the flow of fluid and thus altering said flow of fluid.