Abstract
Phase behavior study and solvent-saturated phase properties are of crucial importance for heavy oil in situ recovery methods as well as pipeline transportation, surface upgrading, and refining. In this study, the extraction of light components and liquid–liquid equilibrium (LLE) for Athabasca bitumen/ethane systems were studied at ambient temperature over a wide range of pressure. The impact of the ethane-to-bitumen ratio on the physical properties of the saturated phases as well as the partitioning of solvent in each liquid phase was evaluated. The experiments were conducted using a designed pressure–volume–temperature (PVT) apparatus to obtain LLE properties as well as the extraction yield for bitumen/solvent systems. The experimental results indicated the extraction yield increased with increasing initial solvent concentration at all operating conditions. Comparatively, higher bitumen fractions were extracted at higher pressures, considering a constant initial solvent concentration. Increasing either t...
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