Correlation for the Diffusivity of Gaseous and Liquid Hydrocarbons with Bitumen

The oil production rate of in situ heavy oil recovery processes involving the injection of gaseous or liquid hydrocarbon solvents depends strongly on the mutual diffusivity of the solvent and bitumen. Data for these diffusivities, particularly above the ambient temperature, are relatively scarce because they are time-consuming to measure. In this study, the diffusion and solubilities of gaseous toluene, n-pentane, and n-heptane in a Western...