#6590. Comprehensive Characterization Investigation of Multiple Time-Varying Rock-Fluid Properties in Waterflooding Development

December 2026publication date
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Energy (all);
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Abstract:
In this paper, the characterization parameter effective displacement flux is employed to describe the flushing intensity, and a new numerical simulator in which the rock-fluid properties considered functions of the effective displacement flux is developed based on the black oil model. Additionally, a conceptual reservoir model is established to validate the effective characterization of the time-varying mechanisms: The time-varying oil viscosity can characterize the viscous fingering of the water phase and the time-varying absolute permeability can present the aggravation of reservoir heterogeneity, the alteration of wettability is characterized with the time-varying relative permeability, and the ultimate recovery will increase with the combined effect of all three time-varying factors. Eventually, the new simulator is applied to the simulation of an actual waterflooding reservoir to illustrate the assistance in history matching.
Keywords:
oil/gas reservoirs; petroleum engineering

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