Method and apparatus for a downhole spectrometer based on...

Details Method and apparatus for a downhole spectrometer based on... Method and apparatus for a downhole spectrometer based on...

2008-04-22

2008-04-22

Rosenberger, Richard A. (Department: 2877)

Optics: measuring and testing

Oil testing

C356S436000, C356S416000, C356S419000, C250S256000, C250S261000

Reexamination Certificate

active

10985715

ABSTRACT:
The present invention provides an apparatus and method for high resolution spectroscopy (approximately 10 picometer wavelength resolution) using a tunable optical filter (TOF) for analyzing a formation fluid sample downhole and at the surface to determine formation fluid parameters. The analysis comprises determination of gas oil ratio, API gravity and various other fluid parameters which can be estimated after developing correlations to a training set of samples using a neural network or a chemometric equation.

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