Abstract

A study was conducted to simplify the modeling of countercurrent imbibition matrix-fracture transfer flow for dual porosity modeling of naturally fractured reservoirs. Through both analytical work and detailed numerical simulations, scaling studies were conducted of two-phase countercurrent imbibition problem in 3D anisotropic matrix blocks. The ninin result of the work was to identify four key parametric groups which control countercurrent imbibition. This result would not only lead to additional insight into how parameters interact to govern countercurrent imbibition during waterflooding, but would also simplify and aid simulations involved in sensitivity studies, history matching, and stochastic studies. Application of the parametric groups to field-scale dual porosity modeling is also shown.

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