Method for determining residual oil saturation of a...

Details Method for determining residual oil saturation of a... Method for determining residual oil saturation of a...

E - Fixed Constructions

21

B

166/2, 358/5.04

E21B 43/22 (2006.01) E21B 49/00 (2006.01) G01N 33/24 (2006.01) E21B 47/10 (2006.01)

Patent

CA 1310139

METHOD FOR DETERMINING RESIDUAL OIL SATURATION OF A WATERED-OUT RESERVOIR Abstract of the Disclosure 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. 22658/18/1-1-1/31

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