利用分形理论计算相对渗透率曲线——以南襄盆地双河油田核桃园组六油组为例

doi:10.11743/ogg20120412

Abstract

Abstract:

Relative permeability curve is of great importance in reservoir engineering research,and traditionally obtained through polynomial curve fitting of core data.However,the relative permeability curves obtained using the traditional method cannot reflect the whole picture of oil reservoirs due to reservoir heterogeneity,experimental error and limited core numbers.Based on the Fractal theory,a new method of calculating relative oil-water permeability was derived by using the production data from Shuanghe oilfield,Nanxiang Basin.It was applied in the pay Ⅵ in the Hetaoyuan Formation of Shuanghe oilfield and the calculation results were verified with water cut.The relative permeability curves calculated using the new mothod are more reliable and representative than the results measured in laboratory and can reflect well the real reservoir performance.The new method can improve the reliability of relative permeability from core test and can be applied in reservoir engineering.

Key words: fractal dimension, fractal theory, relative permeability curve, Hetaoyuan Formation, Shuanghe oilfield

CLC Number:

TE312

Chen Tianyong, Mao Xin, Liu Shiyin, Yuan Ke, Peng Xiaodong, Wu Wanglin. Fractal theory-based calculation method of relative permeability curves——a case study from the Hetaoyuan Formation in Shuanghe oilfield,Nanxiang Basin[J]. Oil & Gas Geology, 2012, 33(4): 578-581,590.

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Fractal theory-based calculation method of relative permeability curves——a case study from the Hetaoyuan Formation in Shuanghe oilfield,Nanxiang Basin

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