Geology, geography and global energy

Scientific and Technical Journal

GEOLOGICAL CONDITIONS OF NON-ANTICLINAL TRAPS FORMATION AND DEVELOPMENT WITHIN THE KAMSKO-KINELSKAYA DOWNFOLD SYSTEM

2021. №1, pp. 15-23

Vyazovkina Ekaterina O. - Samara State Technical University FSBEI of Higher Education, Molodogvardeiskaya st., 244, 443100, Samara, Russia

Gusev Vladimir V. - Samara State Technical University FSBEI of Higher Education, Molodogvardeiskaya st., 244, 443100, Samara, Russia

This work is about the identification and analysis of the non-anticline traps geological structure within the Kamsko-Kinelskaya downfold system (KKDS) on the example of the CII layer of the Radaevian horizon. The radevian horizon deposits are allocated only within the Ust-Cheremshanskian and the Mukhanovo-Erokhovskian depressions of the KKDS, regionally wedged in the direction on board zones. This fact may be one of the advantage factors in the search for non-anticlinical hydrocarbon traps in the CII layer wedge zones. At the moment, the CII reservoir blowout border in the Kamsko-Kinelskaya Downfolds System (KKDS) within Samara region is ambiguous, and requires clarification. As a result, new boundary of distribution and wedge of the radaevian horizon CII layer was highlighted by comparing correlation schemes, an updated CII layer model was built, a map of efficient and oil-saturated thicknesses, analysis of the distribution of collection properties, geological heterogeneity and fishing characteristics of the reservoir was analyzed. The reserves were calculated based on the similar counting parameters and coefficients for the Vostochny dome fold of the Yuzhny field.

Key words: geological exploration, seismic survey, non-anticlinal traps, depositional conditions, correlation scheme, reserves calculation, well logging, volumetric parameters

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