Geology, geography and global energy

Scientific and Technical Journal

Features fluid dynamic of deep oil and gas complexes

2017. №2, pp. 8-21

Popkov V.I. - D.Sc. in Geology and Mineralogy, Professor, Kuban State University, 149 Stavropolskaya st., Krasnodar, 350040, Russian Federation, geoskubsu@mail.ru

Larichev V.V. - C.Sc. in Geology and Mineralogy, Ph.D. candidate, Kuban State University, 149 Stavropolskaya st., Krasnodar, 350040, Russian Federation, geoskubsu@mail.ru

Practice prospecting for oil and gas, and the study of hydro-geological conditions of the large artesian (oil and gas) basins shows that the hydrogeological material as the section, and in the basin areas, accumulates extremely evenly. Emerging data characterizing the reservoir waters, relate mainly to the oil and gas horizons deeply submerged areas and structures, which are studied only regional oil and gas complexes, while potentially unpromising sequence and multicultural zones remain virtually unexplored. As a result, created in the early stages of research of the oil and gas basins regional maps and diagrams of hydrodynamic hydrochemical zoning later repeatedly rebuilt and supplemented on the basis of the newly received data. Often, the first and last circuits are mutually exclusive. Such precedents have taken place in the South Mangyshlak, and in the Dnieper-Donets basin, and in the Volga-Ural province. Caspian basin in this series as well is no exception. Caspian oil and gas basin, like most others, hydrogeological relation represent a heterogeneous aquifer basin, within which were developed natural water-pressure systems of different genetic types. The availability of these systems is closely connected with the geological structure of the basins, the geological history of the development, thickness and age of sedimentary rocks, thermobaric regime, the character of nudity-bearing rocks, climatic conditions of the region, etc. In the process of historical development of oil and gas basins water-pressure systems are evolving. In some periods of activation of tectonic processes of deep water-pressure systems of elision type are often “transformed” in the filtration system, while extensive transgressions occur inverse processes. In this context, the presently observed stratigraphic confinement of water pumping systems is a consequence of manifestations of the last (latest) orogeny phase. As a result, “yesterday” elysion systems, out-of-sea-level, are subject to active “intervention” of infiltration water. This process at the present stage covers the first surface of the aquifers and complexes, as well as pribortovyh most elevated part of the oil and gas basins. As a result, for the same aquifer system within the oil and gas basins as the characteristic features of infiltration, in the areas of occurrence of the disclosed water-bearing rocks, and elysion in areas of deep, modes.

Key words: глубокопогруженные комплексы, гидродинамическая зональность, минерализация, подземные воды, complexes of deep, hydrodynamic zoning, salinity, groundwater

Read