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通过对涠西南凹陷某区块涠三段测井岩石物理参数的综合分析,总结出了该区的岩石物理特征,获得了反映该区岩性与含油性的敏感参数,并得到如下认识:联合应用纵横波速度比(或泊松比)与拉梅常数(或拉梅常数与密度之积、拉梅常数与密度之比、体积模量)两种弹性参数组合,或者采用纵横波阻抗联合反演交会的方式,可以较好地预测该区有利目标的含油性。在测井分析的基础上,结合叠前地震资料完成弹性阻抗反演,预测了B井区岩性及含油性。B井钻后测井解释结果与预测结果相符,证实了该方法在涠西南凹陷涠三段油层识别中有一定的应用前景。
Based on the comprehensive analysis of petrophysical parameters of the third member of the 涠 Member in a block in the southwest depression of 涠 Southwest, the petrophysical characteristics of the area are summarized, and the sensitive parameters reflecting the lithology and oiliness of the area are obtained. The following conclusions are obtained: The combination of the two elastic parameters of P-wave velocity ratio (or Poisson’s ratio) and Lame’s constant (or the product of Lame’s constant and density, the ratio of Lame’s constant to density, bulk modulus) or the combination of P- The way the fair was conducted was a good way to predict the oilyness of the region’s favorable targets. On the basis of well logging analysis, the elastic impedance inversion is carried out based on the prestack seismic data to predict the lithology and oil content in Well B. The well log interpretation results of Well B are consistent with the prediction results, which proves that this method has certain application prospect in the oil layer identification of the third member of the Xuannan Sag.