Adsorbed residual oil saturation and phase permeability relationship in productive formations of Western Siberias

The paper points out that the permeability for oil at residual water saturation (the starting point of the single phase flow curve for oil) is determined by the adsorbed residual oil saturation of the reservoir. A formula linking the adsorbed residual oil saturation coefficient with the phase permeability for oil with residual water saturation has been obtained. It is noted that the adsorbed residual oil saturation is also closely related to the residual water saturation of the reservoir. Such a connection is carried out through the formation shaliness. The proposed methodology allows structuring the residual oil saturation by type and mobility degree, as well as predicting the mobile oil residual reserves distribution to justify the recovery technologies. Keywords: types of residual oil; relative phase permeability; productive reservoir.