X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2006-09-15
2009-06-02
Glick, Edward J (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S053000, C250S256000, C250S265000, C250S267000
Reexamination Certificate
active
07542543
ABSTRACT:
A method and apparatus for determining the density and phase fractions of well services fluids is shown including an x-ray generator, a sample cell, and a radiation detector. Radiation is passed through the sample cell and fluid and the attenuated radiation signal is used to evaluate the fluid. In one embodiment, a reference radiation detector measures a filtered radiation signal and controls the acceleration voltage and/or beam current of the x-ray generator using this information. The apparatus may be permanently affixed for long term monitoring or temporarily clamped on to a pipe in production.
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Atkinson, et al., “A New Horizon in Multiphase Flow Measurement,” Oilfield Review (Winter 2004/2005), vol. 16, No. 4, Schlumberger, pp. 52-63.
Durkowski Anthony
Groves Joel
Shampine Rod
Vallee Etienne
Wraight Peter
Cate David
Flynn Michael
Glick Edward J
Midkiff Anastasia
Nava Robin
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