GEOLOGICAL EVOLUTION AND OIL AND GAS CONTENT OF LOCAL UPLIFTS OF THE BAKU ARCHIPELAGO OF THE SOUTH CASPIAN BASIN

Abstract

The research relevance is backed by the need to expand the resource potential of the western flank of the South Caspian basin and increase production in some oilfields of the Baku Archipelago. The aim of the research is to determine structural evolution features, paleogeographic, pressure and temperature environment and the deposition rate in order to assess oil and gas opportunities of the area under investigation. Methods. Paleotectonic and paleogeographic reconstruction of the area under investigation were conducted using computer software and a tectonic model of the deposition zone was constructed based on paleogeographic data. Results. The authors have constructed the schematic map, paleogeographic histogram, deposition rate diagrams for individual structures, paleotectonic profiles, a chart of the fold amplitude variation as a function of time and analyzed using computer technologies. The studies allow making the following conclusions: study of the history of geologic evolution of the local structures Aran-deniz-Dashli and Sabail showed that their development is syndepositional by nature; study of paleogeographic environments and deposition rates of individual stratigraphic units identified the presence of favorable paleogeographic conditions for accumulation of organic matter in source rocks of the section above the Clarke number; complication of local structures by mud volcanoes as well as analysis of geothermal data throughout the section allow making the conclusion on existence of quite favorable pressure and temperature environment for oil and gas generation in potential source rocks.

Keywords

• basin
• structure
• opportunities
• lithology
• hydrocarbon
• rock
• depression
• fault
• suite
• oilfield