South Caspian oil-gas bearing basin is the richest Caspian region for oil and gas production. The great majority of produced fields are located here. Therefore, coastal states consider it the prospective region. Briefly, the paper describes the geographic and tectonic location of South Caspian, as well as the structural-morphological features of Mezo-Cenozoic sediment layers. It is emphasized that ultra-deep South Caspian depression is the major oil-gas forming bolson, both in the paleo-geological evolution process and nowadays. However, there is no single opinion on its role in the formation of oil and gas deposits among the scientists and researchers. Based on the comparative analysis of specialists’ opinion and developed tectonic geographic demarcation maps, deep sections and models as well, it is supposed that coastal, particularly western “land-sea” transition zones may be quite oil-gas forming medium. For greater certainty, the authors offer conducting high-accuracy geophysical surveys.
Reservoirs in carbonates of the lower oil and gas-bearing complex of the Timan-Pechora Province (for the anniversary of T. V. Maydl)