In this article questions of specification of geological models in the process of exploitation drilling are considered on the example of geological structure of U1 fomation. Rather often there is a need of specification of a geological structure of oil and gas deposits, and sometimes even a full revision of existing before conception of geological features of deposits.

Mapping of property distribution of formation using dynamic seismic attributes is a widespreaded way of analysis, but it is not always possible to receive reliable dependences between attribute and properties of formation, especially for the deposits having a complex geological structure. Using seismic prospecting data as dynamic and seismo-facial analysis U1 formation was devided into facies according special generation and accumulation conditions and having different reservoir properties. This approach allowed to get reliable correlation links for calculations seismic attributes into effective thickness maps that were used for determination of location of projected wells.

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