Xi Zhang1, Changquan Wang1,*, Hua Wu2, Xu Zhao2
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.3, pp. 661-677, 2022, DOI:10.32604/fdmp.2022.019486
Abstract The oil production predicted by means of the conventional water-drive characteristic curve is typically affected by
large deviations with respect to the actual value when the so-called high water-cut stage is entered. In order to
solve this problem, a new characteristic relationship between the relative permeability ratio and the average water
saturation is proposed. By comparing the outcomes of different matching methods, it is verified that it can well
reflect the variation characteristics of the relative permeability ratio curve. Combining the new formula with a
reservoir engineering method, two new formulas are derived for the water flooding characteristic curve in… More >
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