Fiber optic refractometer

Optics: measuring and testing – Refraction testing – Refractive rod engages specimen

Reexamination Certificate

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C356S436000, C250S269100

Reexamination Certificate

active

07852468

ABSTRACT:
A downhole refractometer apparatus and method include a light source, an optical fiber that receives light emitted from the light source and a fluid cell that receives a downhole fluid. A metalloid interface member is disposed to provide an interface with the downhole fluid in the fluid cell, and a light detecting device detects a light reaction at the metalloid interface member, the downhole fluid property being estimable at least in part based on the light reaction.

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