庙北地区馆陶组砂、泥岩速度差在 2 0 %以上 ,因此可利用速度来预测砂岩百分含量。其方法是 ,首先把地震层速度转换为测井层速度 ,并使用包络线法制作砂泥岩测井层速度量板。然后以此为根据 ,在基于三维测井约束反演层速度场的前提下 ,对庙北地区馆陶组地层的砂泥岩百分含量进行预测。经后期钻井资料验证 ,该方法预测效果好 ,预测精度高。 The sand and mudstone velocity difference of Guantao Formation in Miaobei area is over 20%, so the percentage of sandstone can be predicted by the velocity. The method is to first convert the velocity of the seismic layer into the velocity of the logging layer, and use the envelope method to make the sand-shale logging velocity plate. Based on this, the percentages of sandstone and mudstone in the Guantao formation of the Miaobei area are predicted based on the inversion of the layer velocity field based on the 3D logging constraints. After drilling data validation, this method has good prediction effect and high prediction accuracy.