K. Dobrovol’skaya, T.V. Morkovskaya STUDY OF THE UPPER PART OF THE SEDIMENTARY COVER AND SEARCH FOR HEAVY OIL DEPOSITS THAT OCCUR ON HIGHER LAYERS USING 2D CDP SEISMIC SURVEY ON THE TERRITORY OF TATARSTAN R.S. Khisamov1 , V.A. Ekimenko2 , Zh. <...> The paper represents the results of experimental-methodical works of 2D CDP on the study of Permian- Upper Carboniferous interval of the section in order to develop techniques for the study of heavy oil deposits. <...> As a result of 2D CDP seismic surveys the upper part of the sedimentary cover was studied in detail, including deposits of Tatarian, Kazanian, Ufimian tiers of the Upper Permian, Sakmarian, Asselian tiers of the Lower Permian and reflectors C3 and C3a in the Upper Carboniferous sediments, the depth of which does not exceed 500 m. <...> The boundary of Neogene paleovalley is reconfirmed. <...> Forecast is carried out for upper sand packs of Ufimian tier, which is associated with deposits of heavy oil. <...> Keywords: seismic survey, upper part of the section, heavy oil deposits, sand pack, well DOI: 10.18599/grs.18.4.7 For citation: Khisamov R.S., Ekimenko V.A., Dobrovolskaya Zh. <...> To work out the methodology, the researches were carried out in the eastern part of Cheremshansky district of Tatarstan on sites Upper Karmalsky and Lower Karmalsky deposits of viscous oil (Dobrovolskaya, Morkovskaya, 2013). <...> All of the above boundaries are characterized by different dynamic expression in a wave field and, as a result, quality of traceability (Figure 1). <...> Lithologic and stratigraphic binding of reflectors was made using data of seismic well logging and modeling of seismic wavelet based on the theoretical curves of acoustic logging, which allowed correlating reflectors along the profiles in the sediments of the Kazanian stage, from roofing surfaces of Tatarian, Ufimian, Sakmarian, Asselian and reflectors C3 and C3 a in the sediments of 300 GEORESURSY Brief geological description of the target interval of the section The studied area belongs to the Central bituminous area, “which corresponds to the large pole of bitumen accumulation located on the eastern edge of Melekess basin and the western slope of South Tatar arch” (Khisamov et al., 2006). <...> Upper Karmalsky and Lower Karmalsky deposits of heavy oil are located in the area of seismic operations, confined <...>