论文部分内容阅读
油气储层的物性参数是勘探地球物理的重要基础资料,为了研究含油饱和度、孔隙度对纵波速度的影响,在实验室内对5块天然岩心及2块人造岩心样品进行了油驱水情况下弹性波速的测量,给出了纵波速度随含油百分比变化的拟合公式,并讨论了含油饱和度变化对岩石纵波速度的影响,实验结果表明,随着含油饱和度的增加及含水饱和度的减少,纵波速度有上升的趋势;孔隙度越小的岩石,纵波速度越高,纵波速度随含油饱和度变化的幅度就越大。
In order to study the influence of oil saturation and porosity on P-wave velocity, physical properties of oil and gas reservoirs are important basic data for exploration geophysics. Oil-water flooding was performed on 5 natural cores and 2 artificial cores in the laboratory Under the elastic wave velocity measurement, the fitting formula of longitudinal wave velocity with oil percentage change is given, and the influence of oil saturation change on longitudinal wave velocity is discussed. The experimental results show that with the increase of oil saturation and water saturation And the P-wave velocity tends to increase. For the rock with smaller porosity, the P-wave velocity is higher and the P-wave velocity changes with the oil saturation more.