System and method for dual path length optical analysis of...

Details System and method for dual path length optical analysis of... System and method for dual path length optical analysis of...

2007-09-05

2010-11-02

Punnoose, Roy (Department: 2886)

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

C356S241500, C356S432000

Reexamination Certificate

active

07826050

ABSTRACT:
A method is disclosed for changing an optical path length through a fluid downhole, comprising interspersing an optically transmissive member into a first optical path through the fluid, thereby creating a second shorter optical path through the fluid. In another embodiment, the method further comprises measuring an intensity of light, I1transmitted through the first optical path; measuring an intensity of light, I2transmitted through the second optical path; and estimating an optical property for the second optical path from the ratio, I1/I2. A system is disclosed for changing an optical path length through a fluid downhole, comprising a fluid passage between two optically transmissive windows for the fluid downhole, the fluid passage having a first optical path through the fluid; and an optically transmissive member for insertion into the first optical path, thereby creating a second shorter optical path through the fluid.

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patent: 2006194775 (2006-07-01), None

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