Browse

Heavy hydrocarbon feedstocks including heavy and extra-heavy oils produced from oilsands reservoirs have a high viscosity, which cause a big challenge to their productions and pipeline transportations. Techniques to reduce the viscosity at low incremental production cost are desirable. Thermal decompositions of these resources-derived bitumen at temperatures of 250 °C was explored as a prospect strategy for viscosity reduction. In this work, thermal visbreaking experiments were carried out in a stainless-steel 350...

The effect of coke formation on the pore structure and permeability in the process of the in-situ upgrading of heavy oil under supercritical condition has attracted more and more attention. Studying coke formation induced by thermal treatment is currently an important task for selecting the optimum upgrading technologies for heavy and extra-heavy oils. This research is intended to evaluate coke formation through the process of aquathermolysis in the condition of superheated steam injection. In this study, upgradin...