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应用变异函数探讨了砂体的定量预测问题。通过对北二东密井网试验区不同类型砂体、不同井网密度砂岩厚度的预测 ,检验了此方法的精度 (为 70 %左右 )。在原方法的基础上 ,通过对预测精度的分析并结合精细地质研究进一步完善了该方法 ,提出二次建模法并应用于北二东西块聚驱井的砂岩厚度预测中 ,预测精度可提高 5 %以上 ,从而说明应用变异函数研究砂体的定量预测问题具有可借鉴性 ,可以为今后新井调整厚度的预测及砂体描述提供依据
Using the variogram to explore the quantitative prediction of sand body. The accuracy of this method (about 70%) was tested by predicting the thickness of different types of sand bodies and different patterns of wellbore density in the North Second East tight well test area. On the basis of the original method, this method is further improved through the analysis of the prediction accuracy combined with the fine geology study. The quadratic modeling method is proposed and applied to the prediction of the sandstone thickness in poly-flooding wells of Beier-Erhdong block. The prediction accuracy can be improved by 5 %, Which shows that the application of the variogram to study the quantitative prediction of sand bodies can be used for reference, which can provide the basis for the future prediction of the thickness of new wells and sand body description