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裂缝性致密砂岩的解释模型是测井定量评价的基础。依据黄桥地区龙潭组地层裂缝性致密砂岩地质特点和孔隙空间的组成,利用三水模型分析了裂缝性致密砂岩的导电机理,提出了该地区的测井解释理论和方法,实现了组分孔隙度和饱和度的定量计算。应用表明,计算的三水导电组分孔隙度与核磁共振测井结果一致,测井解释结果与测试结果一致,认为该方法适用于该地区裂缝性致密砂岩的测井评价。
The interpretation model of fractured tight sandstone is the basis for quantitative logging evaluation. According to the geologic characteristics and pore space composition of the tight sandstone in Longtan Formation of Huangqiao area, the conductivity mechanism of fractured tight sandstone was analyzed by using the tri-water model. The theory and method of well logging interpretation in this area were proposed, and the component porosity Degree and saturation of the quantitative calculation. The application shows that the calculated porosity of the tri-conductive component is consistent with the NMR logging results, and the logging interpretation results are consistent with the test results. The results show that this method is suitable for logging evaluation of fractured tight sandstone in this area.