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oa Structural Features and Petrophysics of Low-Resistance Reservoirs of the Western Siberia Vatjegansky Upper Jurassic Oilfield
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Geomodel 2017, Sep 2017, Volume 2017, p.1 - 6
Abstract
In this paper, the features of low-resistance reservoirs of the Vasyagan series of Western Siberia Vatjegan oilfield are observed along with possible reasons of rock resistivity decrease. As a result of intensive core samples research a conslusion is made that the main influence on a rock resestivity decrease of the Vatjegan oilfield UV1 layer is done by fractional composition of sediments. An algorithm was developed to divide UV1 reservoir layers by lithotypes based on GIS data which corresponds to the traditional and lowresistance parts of the cut. The problem of estimating the oil saturation coefficient is considered, a technique is proposed for evaluating the character of the reservoir saturation of the investigated sediments, depending on their filtration capacity.