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This work devoted to study in situ combustion processes of crude oil at different pressures. The crude oils from Russian Federation were selected field. Oxidation process in reservoir conditions (50.7, 83.8, 101.2, 125.5 bars and 50 °C) was studied for crude oil. The combustion study was investigated by accelerating rate calorimetry (ARC). Arrhenius kinetic parameters were determined for crude oils. The correlation between reaction duration and initial pressure was found. [ABSTRACT FROM AUTHOR]

This work devoted to study the influence of water content and catalyst presence on in situ combustion processes of crude oil. The crude oils from Russia oil field were studied. Oxidation process at reservoir conditions (50 bar and 30 °C) was studied for crude oil at different water content (0, 20, 30 % by weight) and catalyst presence (Co3O4). The combustion study was investigated by accelerating rate calorimetry (ARC). Arrhenius kinetic parameters were determined for crude oils.The correlation between water content, catalyst presence and kinetic parameters was found. [ABSTRACT FROM AUTHOR]

In this work to study influence ratio of the components of the gas mixture of oxygen with nitrogen at thermodynamic, kinetic parameters of oxidation oil at reservoir conditions. Mixtures of oxygen with nitrogen were obtained by gravimetric method with different ratios. The oxygen content in the gas mixtures was 3, 15, 21, 40%. The main methods used accelerating rate calorimetry (ARC). Beginning of the combustion (oxidation) process depends on the oxygen content of the gas mixture. The higher oxygen content in the gas mixture, the higher the initial oxidation temperature, but for the gas mixture of oxygen - 3%, the oxidation process does not proceed. It should be noted that the higher oxygen content, higher the rate of combustion and the end of the process occurs earlier. Kinetic parameters (activation energy, reaction rate, etc.) of oxidation processes of heavy oils were obtained. It was found that increasing the oxygen content in the gas mixture the activation energy is considerably reduced. The most effective mixtures of gases have been identified for their possible application in real deposits. [ABSTRACT FROM AUTHOR]

This work devoted to study in situ combustion processes of different crude oil. The crude oils from different field of Russian Federation were selected. Oxidation process in reservoir conditions (50 bar and 50 °C) were studied for all crude oils. The combustion study was investigated by accelerating rate calorimetry (ARC). This method is most suitable for studying the processes of oil oxidation in reservoir conditions. Arrhenius kinetic parameters were determined for crude oils. The correlations between API gravity and activation energy of crude oils oxidation was found. Those correlations will be useful to predict behavior of crude oil oxidation processes. [ABSTRACT FROM AUTHOR]