A clarification of the oil deposit borders, according to the hydrocarbon saturation outer contours, is realized based on the complex interpretation of the most informative predictive geological indicators.
That kind of clarification for the productive and promising layers of a terrigenous deposit is set using the contours of increased values of acoustic impedance, sandiness, porosity, hydrocarbons density distribution, lower values of clayiness, and others.
For the productive strata in particular, the contours are elevated dolomitization, jointing, and sedimentation models, which are controlling carbonate sedimentation.