Method of creation the litho-facial scheme-maps for analysis of Vostochno-Surgutskoe field YUS <sub>1</sub>
In article have been reviewed an operational analysis of Vostochno-Surgutskoe field JUS1 horizon deposits creation process with litho-facial scheme-maps usage. This method allows immediate assess the litho-facial anisotropy of researching object, marking sand bodies and create the basement for detailed litho-facial analysis. The main difference of this method is its simplicity and efficiency, what allows laying the basement for litho-facial analysis at the first stage of 3D geological model creation.  Materials and methods  Method of 3D geological models reliability increasing based by litho-facial analysis.  Results  Was made litho-facial scheme-map, what truly reflects the researchable region paleogeography, but also allows to change the conceptual model of researchable object operatively.  Сonclusions Methodic submitted in article allows: 1. To integrate litho-facial analysis into 3Dgeological model. 2. Make counting of porosity in each litho-facial zone separately. 3. Decrease risks during the prediction of oil resources extraction.