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FEATURES OF GEOLOGICAL STUDY AND DEVELOPMENT OF ACCUMULATIONS WITH HARD-TO-RECOVER RESERVES IN THE PRE-JURASSIC PLAY OF WEST SIBERIA IN RELATION TO THE EXPERIENCE OF GEOLOGICAL-ECONOMIC APPRAISAL

M. Yu. Skuzovatov 1,2, D. V. Milyaev 1,2, D. I. Dushenin 1,2

1 Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia; 2 Institute of Economics and Industrial Engineering SB RAS, Novosibirsk, Russia

Within the West Siberian petroleum basin, more than 60 oil and gas fields have been discovered in the pre-Jurassic basement formations. Reserves of these fields are referred to hard-to-recover ones due to both the complexity of the geological structure and the need to apply non-standard approaches at all stages of their search, exploration and development. Development of the Pre-Jurassic complex is one of the main directions in replenishing the raw material base of hydrocarbons in West Siberia, where production from traditional fields is steadily declining. The article summarizes the data on geological features and petroleum potential of the Pre-Jurassic complex of the West Siberian basin. Based on the analysis of results of exploration and development of accumulations, proposals on various geological and technological parameters are formulated when performing the geological and economic appraisal of promising targets with similar predicted characteristics.

Keywords: West Siberia, hydrocarbons, pre-Jurassic play, hard-to-recover reserves, fractured reservoir, geological exploration, field development.

DOI 10.20403/2078-0575-2021-3-94-105

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