【摘要】 在不同的油水饱和度下测试了砂岩和灰岩样品的电阻率值．测得了它们随饱和度变化的不同规律．饱水砂岩电阻率随饱和度均呈指数下降；而饱油砂岩、石灰岩电阻率则随饱和度呈对数下降．并对实验结果进行了理论分析和讨论．提出了相应的影响因素和机理，且给出了较好的拟合曲线．更多还原

【Abstract】 The electrical resistivity of two kinds of rocks: sandstone and limestone, is measured under different saturation (oil or water), and the changing curves with regad to the saturation are presented. The measured results show that: The resistivity decreases in exponent form for the sandstone of saturated water; The resistivity decreases in logarithm form for the sandstone and limestone of saturated oil. The theoretical analyses and discussion is proposed to explain the experimental result, put forwarded the relevant influence factors and mechanism, and the theoretical curves give a good fit of the experimental result.更多还原