The article considers one of the largest fields operated by Rosneft Oil Company in Eastern Siberia – Yurubcheno-Tokhomskoye oilfield. Main reservoir of the field associated with the oldest sedimentary deposits of the planet – Riphean. The field is classified as very complex in terms of geological aspects and has practically no analogues. Reservoir properties of rocks are associated with a system of natural fracture system and the presence of vuggy zones. The paper describes a multi-disciplinary approach for identifying and forecasting high- porosity vuggy zones in the Riphean carbonate reservoir. The results of the classification of vugs based on core data are presented and the features of its distribution are empirically substantiated. A well logs interpretation technique was developed based on standard methods and using advanced technologies. Various approaches based on 3D seismic data have been proposed for predicting high- porosity vuggy zones. For the forecast we used both modern interpretation technologies, such as seismic inversion and spectral decomposition, and innovative technologies based on scattered seismic waves processing and interpreting. The results obtained are aimed at increasing the efficiency exploration, production and geological support for well drilling, by reducing geological risks. The relevance of the work is due, firstly, to the fact that previously the Riphean reservoirs of Yurubcheno-Tokhomskoye oilfield were considered exclusively from the perspective of predicting fracturing, and the vuggy zones was not given sufficient attention due to poor amount of the core data. Secondly, the paper presents advanced technologies that can be useful in the study of other objects with vuggy reservoir type.
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