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:
Dec. 11, 2018
Filed:
Mar. 15, 2013
Applicant:
Institutt for Energiteknikk, Kjeller, NO;
Inventors:
Terje Sira, Skedsmokorset, NO;
Tor Bjørnstad, Hagan, NO;
Assignee:
RESMAN AS, Ranheim, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 49/08 (2006.01); E21B 47/10 (2012.01); E21B 27/02 (2006.01); G01F 1/704 (2006.01);
U.S. Cl.
CPC ...
E21B 49/087 (2013.01); E21B 27/02 (2013.01); E21B 47/1015 (2013.01); G01F 1/704 (2013.01);
Abstract
An apparatus for tracer based flow measurement may include a tracer chamber for installation in and/or on a production tubing, wherein the tracer chamber is for holding tracer and is arranged to be linked, in use, to the pressure in an annulus about the production tubing. The tracer chamber may include an outlet for fluid communication between the tracer chamber and the fluid within the production tubing, whereby tracer is released from the tracer chamber into the production tubing in accordance with a pressure differential between the annulus and the production tubing.