关键词: 阿尔奇参数, 饱和度, 岩石物性, 地层水, 电阻率, 孔隙度

Abstract: A new method for determining Archie's parameters using saturation analysis data was presented.Correlations among saturation,resistivity and porosity were derived from the two Archie equations,and the calculation of Archie's parameters was converted to a problem for calculating a coefficient of an equation with several unknows. The calculation and study on actual saturation analysis data in several oilfields of Junggar Basin show that the calculated parameters are all within the theoretical range,and this method can be used to get saturation values with logging data.The key factors influencing Archie's parameters,especially the influence of petrophysical properties and wettability, were discussed.Archil's parameters determined with satuation analysis data are in a wide range.Furthermore,determining Archie's parameters using saturation analysis data allows it unnecessary to calculate resistivity of formation water.Saturation should be measured in the very sealed fields.Some errors between the measured values and the original values would exist due to the degasification and volatilization of tested samples,which influences the effectiveness of saturation data.Therefore,it is important to correct the measured saturation values.

Key words: Archie’s parameters, rock property, formation water, resistivity, porosity, saturation