A Technique for Improving the Simulation of Linear, Miscible Hydrocarbon Displacement in the Event of Viscous Fingering

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Abstract
An important phenomenon in the physics of miscible displacement of hydrocarbon fluids in oil reservoirs is viscous fingering, or frontal instability. Simulators are the principal tools used by the reservoir engineers for predicting hydrocarbon recovery under various processes. The reliability of the simulators results is enhanced if they account for the effect of viscous fingering. In this paper we present an easy-to-use technique for that purpose, applicable for one-dimensional flow. The method basically calculates an effective viscosity and density for the displacing fluid. The technique was used in the simulator to model linear, miscible displacement experiments reported in the literature. The agreement between the experimental and calculated results was good.

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