Geology, geography and global energy
Scientific and Technical Journal
Substantiation of oil and gas prospects of post-salt complex of the North-Western Caspian
2018. №4, pp. 58-66
Bystrova I.V. - C.Sc. in Geology and Minerology, Associate Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, bystrova1948@list.ru
Smirnova T.S. - C.Sc. in Geology and Minerology, Associate Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, tatyana.smirnova@asu.edu.ru
Bychkova D.A. - Master, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, erebryakov-74@mail.ru
Melikhov M.S. - undergraduate, Gubkin Russian State University of Oil and Gas, 65 Leninskiy av., Moscow, 119991, Russian Federation, mr.m_m_s@mail.ru
The article deals with the prospects of oil and gas potential of the North-Western Caspian sea salt complex. The analysis of the main factors influencing oil and gas formation is given. The allocation of oil-source suites of the region is substantiated. The interrelation of the paleotectonic regime for the conditions of immersion of oil-source suites and formation of oil and gas fields is traced. The role of the rate of sedimentation immersion on the example of the Sarpinsky deflection area and the Northern slope of the Karpinsky megaval is noted. On the basis of the history of geological development and characterization of lithological and facies features stand out promising complexes of deposits (middle Jurassic and Cretaceous). The influence of thermobaric conditions and time index on the formation of oil-source potential is indicated. Taking the doctrine of I. M. Gubkin and his followers as a basis, we note the dependence of the oil source potential on the thermobaric conditions. The results of fluorescent bitumen research post-salt sediments in Buskulsky, Drachevskii, Stepnovskoe, Minakshi and other areas, which allows to conclude that the study area of the middle Jurassic and Aptian deposits are neftegazopromyslovyi.
Key words: нефтегазоносность, надсолевой комплекс, Северо-Западный Прикаспий, нефтегазообразование, нефтегазоматеринский потенциал, зона Южно-Астраханских поднятий, кряж Карпинского, Сарпинский мегапрогиб, oil and gas content, post-salt complex, North-Western Caspia
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