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Summary This paper discusses the importance of geological parameters of reservoir sandstones and their fieldwide distribution for proper planning and operation of EOR projects. Such parameters are gross and net pay thickness, permeability, porosity, grain size distribution, composition of detrital minerals, amount and type of mineral cements, and amount and type of clay minerals. Fieldwide distribution of these parameters is shown for the case history of the Hankensbüttel-Süd oil field in the Federal Republic of Germany. Overlaying the distribution maps made it possible to distinguish areas with excellent to good potential for chemical flooding from areas of fair to poor potential. On the basis of these results, a surfactant/polymer flood pilot has been initiated in this field.
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Gaida et al. (1987) studied this question.
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