The domanik deposits of the Denisovsky downfold according to the core data of the Komandirshor-12 well

The Domanik deposits of the studied section are represented by thin-layered bituminous limestones accumulated in a calm hydrodynamic situation. Thermal maturity of organic matter is high, in terms of Tmax and elemental composition of kerogen it can be defined as late mature. The bitumen at this stage of thermal maturity mainly contains n-alkanes, the concentrations of isoprenoids are relatively small, and the polycyclic biomarkers are determined at the background level. The value of d13C of kerogen on average is 28.5. Kerogen, as it follows from NMR 13C spectroscopy, elemental analysis and pyrolysis with chromatography-mass spectral analysis of products, is mainly aromatic, but contains insignificant concentrations of n-alkyl chains. The generation potential of the Denisovsky downfold in the area of the Komandirshor-12 well is significantly realized.