Published January 2013

Characteristics of paleotectonic development of some structures of Baku and their oil – gas content

Y.Y. Pogorelova

G.N. Gahramanov

Covering a large area of water in south-western part of the Caspian Sea, limiting with Western Turkmenistan on eastern side, Kura-side- Gobustan concavity on western side, Baku archipelago is the most tectonic zones of Southern Caspian cavity. Anticlinal folds have undergone acute dislocation as well as are in hypsometric level in comparison with the joint structures of dry areas. Oily-gaseous basin of Southern Caspian is the continuation of Alps folding, one of the biggest territories of the Earth crust. Mesozoic, Cenozoic and IV Period deposits are present in the geological section of Southern Caspian cavity. Mail oily-gaseous complex is related with sandy clayey deposits of Lower Pliocene. Oil gas fields consist of diametrical and lengthwise tectonic breakings with crushed blocks. Higher sand content of the breaking is related with sedimentary materials brought by Paleovolga, Paleokura and Pirsaat rivers. Improvement of collector features of Baku archipelago increases towards the depth of aquatory. In the indicating direction vertical and lateral distribution of oily gaseous nature depending on depth and thermobaric condition becomes evident. Gas content of the fields increases in the direction of inclines of the same name. We can come to a conclusion that availability of oil-gas content is related with horizons of V, VII, VIII of lower Pliocene cavities and it would be more expedient to carry out research-exploration in these horizons and in wings of less breach in most structures of the archipelago.