US Patent 7969571 Evanescent wave downhole fiber optic spectrometer

Patent 7969571 was granted and assigned to Baker Hughes on June, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Baker Hughes

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7969571

Patent Inventor Names

Rocco DiFoggio0

Date of Patent

June 28, 2011

Patent Application Number

12354117

Date Filed

January 15, 2009

Patent Primary Examiner

‌

F. L. Evans

Patent abstract

An apparatus for estimating a property of a fluid downhole, is provided an includes: an optical fiber that receives light emitted from a light source and including an unclad portion adapted for contacting the fluid; a photodetector for receiving optical signals from the portion; and a spectrometer for obtaining an evanescent spectrum of the fluid from the portion. A method and a system are included.