Theoretical and methodological approaches to identifying deep accumulations of oil and gas in oil and gas basins of the Russian Federation

A large number of oil and gas accumulations at deep ultra-deep depths, recently revealed in the world due to development drilling technologies, forces a revision theoretical ideas on many issues, including conditions formation hydrocarbon conservation zones high pressures temperatures, as well evaluating possibility reservoirs. Among most discussed, this regard, are issues determining processes rate which differ significantly from those small medium depths: Thermobaric responsible for formation, phase distribution hydrocarbons, geochemical indicators—type kerogen, its transformation, staging generation peaks—lithological composition kerogen-bearing strata—the scale dip uplift timing exposure temperatures—the overlapping saline strata presence conductive faults that affect temperature pressure gradients. Analysis influence above factors prospects deep-lying complexes taking into account new studies achievements, mainly sedimentary basins China (Tarim, Jungar, Ordos, Sichuan), Gulf Mexico offshore Brazil (Santos) allowed typifying major depressions Russia, with allocation areas ultra-low depth potential studies. historical geological criteria have been developed methodology detailed study promising has proposed, complex extracts bitumoids (pyrolytic, chromatographic) lithological petrophysical core aimed assessing content Russian subsequent localization drilling.