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In-situ combustion is an effective thermal recovery process for heavy oils and natural bitumen. It is widely accepted what the success of an in-situ combustion depends on a stable combustion front. However, field and laboratory data show that combustion front is often unstable, which severely limits the wide application of in-situ combustion technique. The goal of this work is to develop oil-soluble metal-based catalyst to improve the combustion behavior of heavy oils, and thus achieve a stable combustion front. I...

Air injection techniques (high pressure air injection and in-situ combustion) for enhanced oil recovery (EOR) have attracted extensive attention due to its low cost. Air injection can be applied in many candidate reservoirs including carbonate reservoirs that account for a great proportion of total oil reserves all over the world. Dolomite and calcite are the main minerals of carbonate reservoirs. Therefore, it is necessary to study their effect on the oxidation of crude oil as the oxidation reaction exactly occur...