Catalyzed in-situ combustion of extra heavy crude-oil was studied. The effects of copper nanoparticles (Cu-NP) on combustion were quantified by measuring crude-oil oxidation kinetics and elucidated by capturing front and fuel deposition behavior. Ramped temperature oxidation experiments, coupled with isoconversional analysis, helped measure reaction kinetics. Improvement in the rate of combustion was seen when the nanoparticles were present at a concentration of 1000ppm in the aqueous phase. Chiefly, the apparent activation energy of the high-temperature oxidation region decreased. Cu-NP also serve as a reaction inhibitor of low-temperature oxidation (LTO), which is of interest because LTO reactions increase the viscosity of the virgin oil downstream of the combustion front. As a result of this, the alteration of LTO reactions, and the change in fuel formation, the presence of Cu-NP help maintain a greater front temperature. Thermogravimetric analysis shows that the oxidation behavior of the nanoparticles, namely the change of surface and bulk oxidation state, determines the rate and temperature that low-temperature oxidation and high-temperature oxidation occur for the median particle size distribution. Finally, potentiometric titration of the produced fluids shows that Cu-NP change the type of oil produced and decrease the amount of water created during the process.