A 2d Dynamic Pore Network Model for Modeling Primary Drainage
نویسندگان
چکیده
We present a dynamic network model to investigate the effects of capillary number and viscosity ratio on displacement patterns and fractional flow in primary drainage. This model predicts the events that are observed in the micro-model experiments, such as swelling of the wetting layers and the meniscus oscillation. Interfaces are tracked through the pore elements using a modified Poiseuille equation that involves a use of the equivalent hydraulic resistance of the fluids between the pore element centers. Snapoff in primary drainage is modeled by allowing the wetting layer conductance to change with changing local saturation. Initial computational results are presented for simulations of primary drainage.
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