Geology, geography and global energy

Scientific and Technical Journal

Litologo-stratigraficheskaya characteristic of the Astrakhan gas-condensate field

2017. 4, pp. 52-63

Mukhasheva A.H. - post-graduate student, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,

Formation of the Astrakhan gas-condensate field is caused by the paleotectonic, geochemical and thermodynamic processes which were taking place in carbonate thicknesses of average and lower carbon fabrics. The lithologic and tectonic isolation of Astrakhan Anticline was a favorable factor for formation of the closed, isolated gas-hydrodynamic system with special conditions for accumulation of hydrocarbons, formation of hydrogen sulfide and carbon dioxide and also emergence of severe thermobaric conditions of bedding of formation fluids. Geologic-geophysical and seismic researches, materials of drilling of parametrical, explorative and operational wells have allowed to specify lithologic model of Astrakhan Anticline and the Astrakhan gas-condensate field in particular. The Astrakhan gas-condensate field is the unique field with the high content of hydrogen sulfide, in communication with what is of great interest to a research. Besides, annual accumulation of volumes of development drilling for maintenance of design level of production of hydrocarbons demands rather detailed studying of features of a litologo-stratigrafichesky section of this field and all Astrakhan Anticline that, in turn, will give the chance to open new structures, perspective in the oil and gas relation.

Key words: , , , , , lithology, Astrakhan gas-condensate field, stratigraphy, tier, deposits