Lithological and petrophysical anisotpopy of Kasanskoye hydrocarbons field formations (Tomsk region)

This article comprises the problem of oil recovery and methods aimed to research heterogeneities in oilbearing horizons that affect the type of simulation processes. The proposed method to determine the lithological and petrophysical heterogeneity allows numerical evaluation of value, direction and probability of lateral heterogeneity in horizons and also to consider its possible appearance during oil field development process. On the Kazanskoe oil field authors (using oriented bypalaeomagnetic method samples) determined predominant directions of elongated quartz sandstone grains. Construction of magnetic inhomogeneity ellipsoid provides in concept with the established areas of preferred elongated grains orientation. The direction of maximum fracture of clastic material and displacement of pore space in rocks is a fixed correlation. Spatial orientation of clastic material connected with simulation features of clastic reservoirs formation that in its turn predetermines the porous matrix structure and its filtration anisotropy. In turn this to optimize the placement of injection and production wells and provide the event planning in order to increase oil recovery.