Method and system for estimating Archie index

The invention discloses an Archie index estimation method and system, and the method comprises the steps: analyzing a hydrocarbon recovery coefficient according to rock pyrolysis geochemical data, and determining the oil saturation of reservoir pyrolysis geochemical and the oil saturation of flushing zone pyrolysis geochemical in combination with the hydrocarbon recovery coefficient; fitting a reservoir water saturation calculation formula and a flushing zone water saturation calculation formula according to the conventional logging parameters; performing variant estimation on the reservoir water saturation calculation formula in combination with the reservoir oil saturation to obtain a porosity index m in the Archie index; and combining the reservoir water saturation calculation formula and the flushing zone water saturation calculation formula, and combining the reservoir oil saturation and the flushing zone oil saturation to obtain a saturation index n in the Archie index. 本发明公开了一种阿尔奇指数的估算方法及系统，所述方法包括：依据岩石