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:
Aug. 27, 2013
Filed:
Apr. 02, 2009
Pierre Vigneaux, Moisenay, FR;
Dominique Guillot, Fontenay aux Roses, FR;
Pierre Vigneaux, Moisenay, FR;
Dominique Guillot, Fontenay aux Roses, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
An apparatus for use in a wellbore, made of a casing and an annulus with a fluid within, comprises a reel or wound optic fiber line fixed to an object within the casing, and a light transmitter/receiver device that is able to generate a signal through the optic fiber line and to measure a change of said signal. The optic fiber line is (a) on a first position fixed to a reference point linked to the light transmitter/receiver device, and is (b) on a second position unwound from the reel. The light transmitter/receiver device is able to measure the change of said signal when occurring at the second position, and the apparatus has a system able to measure the flow rate of the fluid exiting the annulus at the surface.