Chemistry: analytical and immunological testing – Geochemical – geological – or geothermal exploration – Using chemical tracers
Patent
1991-06-06
1993-10-26
Johnston, Jill A.
Chemistry: analytical and immunological testing
Geochemical, geological, or geothermal exploration
Using chemical tracers
166250, 166252, 436 28, 436 29, 436 56, 436 57, G01N 3324, G01N 3326
Patent
active
052565726
ABSTRACT:
A method for determining residual oil saturation of a watered-out reservoir using two water soluble tracers having different partition coefficients in oil. The partitioning tracers are selected from the group consisting of tritiated or carbon 14 tagged alcohols, ketones, aldehydes, water and oil insoluble inorganics and organic radioactive isotopes. The tracers are injected into the formation, and their production curves are analyzed over a period of time to determine chromatographic separation of the tracers.
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Tang Joseph S.
Taylor Harold G.
Wood Kelvin N.
Exxon Production Research Company
Johnston Jill A.
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