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Abstract
Chapter from:Reservoir
Characterization-Recent Advances
Edited by Reservoir
Fine-Grid Scale
Chapter 21
Effect of Wettability on Scale-Up of Multiphase
Flow From Core-Scale to Reservoir
Fine-Grid Scale
V. Mani
K. K. Mohanty
Department of Chemical Engineering
University of Houston
Houston, Texas, U.S.A.
ABSTRACT
Reservoir
rocks modeled in typical field-scale
simulation
grids are internally
heterogeneous. The objective of this work is to
study
how rock wettability affects the
scale-up of multiphase flow properties from core-scale to fine-grid
reservoir
simulation
scale (~10 ft x 10 ft x 5 ft; 3 m x 3 m x 1.5 m). Upscaling from fine-grid
reservoir
simulation
scale to coarse-grid
simulation
scale is not addressed here. Heterogeneity is
modeled as a correlated random field, parameterized in terms of its variance and two-point
variogram. Variogram models of both finite (spherical) and infinite (fractal) correlation
lengths are included as special cases. Local core-scale porosity, permeability, capillary
pressure, relative permeability, and initial water saturation are assumed to be
correlated. Water injection is simulated; effective flow properties and flow equations are
calculated.
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