ABSTRACT

Lateral variations of the petrophysical parameters in petroleum reservoirs are evidenced by observations in existing wells and quantified by log analysis. This paper presents a method of interpolation based on geostatistical analysis and the associated treatment of log interpretation results. The principle of this method is to capture on existing data the patterns of spatial variations and use this knowledge to derive over the whole field the best estimates of reservoir parameters as well as a measure of their uncertainty. Examples illustrate the possibilities of the method in integrating well logs, seismic data, geology or reservoir model to improve the reservoir description.

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