关键词: Archie公式, 胶结指数, 饱和度指数, 亲油储层, 亲水储层, 数值模拟

Abstract: The Archie formulae for some ideal rock models were derived according to the Ohm Law using the Calculus technique.The affecting factors on the cementing exponent and the saturation exponent were numerically analyzed.It is proved that the saturation exponent kept relatively constant in oil-wet reservoirs while it changes a lot with water saturation in water-wet reservoirs.The relationship between the saturation exponent in water-wet reservoir and saturation exponent in oil-wet reservoir was derived.It can be concluded that watered-out extent will affect the Archie formulae dramatically. It should be given great attention in the well logs analysis of waterflooded zones.

Key words: Archie formula, cementing exponent, saturation exponent, oil-wet reservoir, water-wet reservoir, numerical simulation