Abstract
Abstract Physical model studies of the displacement of residual oil by CO2 have led to the conclusion that the driving mechanism for the process is that of a gas drive of the swollen crude. In this final phase of the study, the fluid/fluid displacement process was gravity-stabilized; mixing of the CO2 with the residual crude oil was minimized. As a result, the performance of CO2 was only marginally better than that of relatively insoluble nitrogen.
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