Key words: geological modeling, oil field, deposit, water-oil contact, lithological heterogeneity, lateral heterogeneity, layer-by-layer heterogeneity.
The article reviews the cases of pay zone lithological heterogeneity effecting hypsometric position of oil deposits water-oil contact (WOC): deposits isolation of one formation by local change in lithology, WOC inclination due to lateral heterogeneity, formation of uneven WOC due to layer-by-layer heterogeneity.
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