This article presents the results of a new approach to seismic inversion, taking into account geological constraints, using one of the fields in the Tyumen suite as an example. The object of the study was an area located in the central part of Western Siberia and consisting of one license area. The main prospecting target within the study area to date is the relatively well studied Tyumen Formation, which is characterized by a rather complex structure with significant vertical and lateral heterogeneity.
The study finds that the standard seismic inversion approach shows good results when lithofacial complexes are clearly separated, but in the absence of such separation, stochastic seismic inversion with geological constraints has significant advantages, allowing incorrect geological models to be excluded from subsequent analysis and narrowing the lithofacial distribution. In addition, the advantages of this approach include incorporating source data uncertainties into the seismic inversion process in order to maximize the incorporation of all uncertainties into the final models.

A.V. Khitrenko^{1, 2}, e-mail: xitrenko.a@gubkin.ru;

K.A. Groman², e-mail: Groman.KA@gazpromneft-ntc.ru;

M.A. Lobusev¹, e-mail: lobusev.m@gubkin.ru

¹ Federal State Autonomous Educational Institution for Higher Education “Gubkin Russian State University of Oil and Gas (National Research University)” (Moscow, Russia).
² Gazprom Neft PJSC (St. Petersburg, Russia).