Filter wheel source assembly for downhole spectroscopy

Details Filter wheel source assembly for downhole spectroscopy Filter wheel source assembly for downhole spectroscopy

G - Physics

01

V

G01V 8/00 (2006.01) G01J 3/51 (2006.01) G01N 33/24 (2006.01) G01N 33/26 (2006.01) G01J 3/10 (2006.01)

Patent

CA 2725359

A downhole fluid analysis tool has a tool housing and a fluid analysis device. The tool housing is deployable downhole and has at least one flow passage for a fluid sample. The fluid analysis device is disposed in the tool housing relative to the flow passage. Inside the device, one or more sources generate a combined input electromagnetic signal across a spectrum of wavelengths, and a routing assembly routes generated signals into the reference and measurement signals. At least one wheel having a plurality of filters is rotated to selectively interpose one or more of the filters in the paths of the reference and measurement signals.

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