Method for determining gas saturation in reservoirs

Details Method for determining gas saturation in reservoirs Method for determining gas saturation in reservoirs

E - Fixed Constructions

21

B

73/104, 150/18

E21B 43/22 (2006.01) E21B 49/00 (2006.01)

Patent

CA 1054911

ABSTRACT A method for determining the relative amounts of two fluid phases in a subterriaean formation in which one of the phases is essentially in immobile gas and the other phase is a mobile liquid. A liquid which is substantially free of dissolved gas is injected into the formation. At least a portion of the injected liquid is produced through the same well used for injection. The concentration of gas dissolved in the produced liquid is measured to determine the relative amounts of the two fluid phases in the formation by a relation between the concentration of gas in the produced liquid, the concentration of gas in the immobile gas phase and the volume of injected and produced liquid.

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