Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1982-06-23
1984-12-25
Smith, Alfred E.
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
250266, 378 89, G01V 512
Patent
active
044906099
ABSTRACT:
The invention relates to a method of measuring the absorption of a photon flux in the fluid flowing in an oil well, for the purpose of determining the composition of the fluid. The invention also relates to a logging sonde for implementing such method.
The photon flux produced by a source such as an X-ray generator irradiates the entire volume of fluid surrounding the sonde, and the energy of the photons is lower than a predetermined value, preferably 100 kev, so that the walls of the well are capable of substantially absorbing the photons impinging thereon. The photon flux includes an energy level at which photoelectric absorption is significant and another energy level at which Thomson scattering is predominant. Measurements of the photoelectric absorption coefficient and density are used to determine water, oil, and salinity.
REFERENCES:
patent: 2881324 (1959-04-01), Scherbatskoy
patent: 3015030 (1961-12-01), Jones
patent: 3038075 (1962-06-01), Youmans
patent: 3058000 (1962-10-01), Scherbatskoy
patent: 3123709 (1964-03-01), Caldwell et al.
Field Carolyn E.
Schlumberger Technology Corporation
Smith Alfred E.
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