Geology, geography and global energy

Scientific and Technical Journal

CHARACTERISTIC OF LOW-PERMEABILITY BREEDS COLLECTORS OF THE BASHKIR TANK OF ASTRAKHAN WOOD BREEDS

2019. №2, pp. 52-61

Ushivtseva Lyubov F. - Ph. D. in Geology and Mineralogy, Associate Professor, Astrakhan State University, ushivceval@mail.ru

Khegai Valeriya Yu. - student, Astrakhan State University, vhmjj@mail.ru

In recent years the increasing relevance is acquired by involvement in development of low-permeability breeds of collectors, in connection with exhaustion of stocks in traditional. The breeds having low permeability belong to low-permeability breeds (less 0.05-0.02 mkm). It is known that the section of the Astrakhan svodovy raising is presented by three structural floors nadsolevy, salt and subsalt. In a nadsolevy part of a section as breeds as capable to contain fluids serve sandstones and aleurolites of the lower chalk and average of Yura, limestones of the lower part of the Paleogene, the top chalk and Yura. In a subsalt part of a section sulfate-carbonate breeds of the filippovsky horizon belong to breeds to collectors, carbonate breeds are limestones of coal and Devonian age which on the available classifications of breeds by permeability belong to low-permeability. In the present article litologofacial features of low-permeability breeds of a subsalt part of a section of the Astrakhan svodovy raising are considered. Scientific novelty. Properties and features of breeds collectors nadsolevy and low-permeability collectors subsalt complexes of deposits are considered and analysed. Conclusions. Influence of low-permeability collectors on process of construction of wells, the choice of a design and development of geological and technical actions is shown.

Key words: резервуар, низкопроницаемые породы-коллекторы, фазовая проницаемость, трещиноватость, кавернозность, неоднородность, постседиментационные преобразования, tank, low-permeability breeds collectors, phase permeability, jointing, kavernoznost, heterogeneity,

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