Prospects for the detection of hydrocarbon traps in the Paleozoic deposits of the Northern Caspian Sea

In the multi-stage history of the formation of oil and gas deposits in the Mesozoic and Paleozoic sediments of the northern part of the Caspian Sea and adjacent land, the parent rocks are Paleozoic sediments, in traps of various types of which hydrocarbons were formed, then in Mesozoic deposits due to hydrocarbons or from destroyed oil deposits in subsalt reef structures. The prospects of detecting hydrocarbon traps in the deep-lying Paleozoic sediments of the Northern Caspian Sea have been repeatedly voiced by researchers. The basis for this forecast is the presence of large carbonate massifs of various types proven by drilling, such as Astrakhan, Tengiz and a number of others within the south of the Caspian Basin, which naturally covers part of the marine area. Given the rich geological history of the region and modern exploration technologies, the prospects for the discovery of hydrocarbon traps in the Paleozoic deposits of the Northern Caspian Sea are considered to be quite high. A number of issues remain unresolved that determine the prospects before the Permian Paleozoic within the Northern Caspian Sea. The main ones include the location of the boundaries of the distribution of large carbonate massifs of the Caspian type within the Northern Caspian region, the contours of the distribution of the hydrochemical halogen tire, the determination of the nature of anticlinal Paleozoic objects identified by geophysical fields, as well as the assessment of the resources of hydrocarbon traps associated with them. To solve the set geological tasks, deep drilling data from wells were used both within the Caspian Sea and the Astrakhan, as well as the Kazakhstan, Caspian Sea, as well as 2D MOGT seismic survey data obtained both within the waters of the Northern Caspian Sea and the south of the Caspian Lowland, as well as the results of scientific research.