速度量化在岩性预测中的应用

Application of Velocity Quantification in Lithologic Prediction

在二维勘探中，常规的岩性指数量板两指数的间隔是25％，这种量板在区域勘探中取得了一定的效果，但对三维勘探这种量板就不能满足储集层预测的精度要求。因此，提出了在三维地震勘探地区通过提高岩性指数量板的分辨率，来提高岩性预测精度的方法。经实际资料验证，其地震预测结果与钻井录井岩性基本吻合，预测精度有明显提高。

In two-dimensional prospecting the conventional interval between two neighboring indexes of lithologic index quantifier is 25％ such quantifier has contributed to a certain degree in application to regional prospecting while it cannot meet the accuracy requirement of reservoir prediction in three dimensional prospecting． This paper suggests in 3D prospecting region by means of raising the resolution of lithologic index quantifier the accuracy of lithologic prediction can be improved． Actual data have verified that the seismic prediction result is basically correspondent with drilling logging recorded result． The accuracy of prediction is obviously improved．