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《Fault-Block Oil & Gas Field》 2018-03
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New method for studying theoretical relationship curve between water cut and recovery percent

ZHANG Hongyou;DENG Qi;WANG Meinan;WANG Yuejie;Bohai Oilfield Research Institute,CNOOC Ltd.;  
Since the relative permeability curve methods cannot accurately describe the relationship curve between water cut and recovery percent, based on nine-spot well pattern of the homogeneous reservoir, this paper establishes the theoretical formula of recovery percent in water-free stage or water-rising stage by using the stream tube model. A new method was proposed to analyses the theoretical relationship curve between water cut and recovery percent. The application in Bohai Oilfield shows that the theoretical relationship curve between the water cut and recovery percent built by the new method can reasonably evaluate the development effect of waterflooding reservoirs and be worth popularizing.
【CateGory Index】: TE357.6
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