G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 23/06 (2006.01) G01N 9/24 (2006.01) G01N 23/087 (2006.01) G01N 23/12 (2006.01) G01F 1/74 (2006.01)
Patent
CA 2590568
An apparatus and method for determining the phase fraction of a fluid collected downhole is shown comprising an x-ray generator, a filter, a sample cell, and a radiation detector. The filter produces a radiation spectrum with a high energy portion and a low energy portion. Filtered radiation is passed through a sample fluid and the resulting attenuated radiation signal is used in calculating the phase fractions of oil, water, and gas in the sample fluid. In one embodiment, a second reference radiation detector measures the radiation directly from the x-ray generator and this measurement is used in normalizing the fraction result. The ratio of the high energy signal to low energy signal of the reference detector is used in controlling the input voltage of the x- ray generator thus ensuring a stable spectrum.
Groves Joel
Vallee Etienne
Wraight Peter
Schlumberger Canada Limited
Smart & Biggar
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