Measuring and testing – Borehole or drilling – Downhole test
Patent
1992-04-24
1994-11-08
Williams, Hezron E.
Measuring and testing
Borehole or drilling
Downhole test
73 1910, 73 6144, 73155, 166250, 250258, E21B 4908
Patent
active
053616324
ABSTRACT:
A method and apparatus determines three phase holdup fractions and flow rates for the individual phases of a fluid flowing in a well. A logging tool comprising a temperature compensated gradiomanometer having a differential pressure detector comprised of two pressure sensors and a nuclear densitometer having a beam source is lowered into a wellbore. The differential pressure between the pressure sensors is measured and an average fluid density is determined. The attenuation of a beam propagating from the beam source through the fluid and to the beam detector is measured, and holdup fractions of the fluid are calculated. Flow rates for the individual phases are determined by adding a flowmeter, and multiplying each holdup fraction by the total flow rate.
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Carson M. W.
Chevron Research and Technology Company
Dombroske George M.
Turner W. K.
Williams Hezron E.
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