Thermodynamic parameters of conversion reactions of some heavy oil components under the action of steam and heat

The mechanism of the reactions of conversion of heavy oil components, viz., heteroatomic compounds and polycyclic aromatic hydrocarbons, under conditions of steam and thermal action on the oil reservoir is studied. Based on the calculation of the thermodynamic parameters of the reactions, conclusions are drawn regarding the feasibility of the reactions and the primary directions of conversion of heavy oil components at the steam and thermal action temperature. The possibility, in principle, of occurrence of hydrogenolysis, hydrogenation, and hydrocracking in the presence of such hydrogen donors as polycyclic naphthenic-aromatic hydrocarbons and formic acid in the reaction system is demonstrated.