应用变尺度分形技术研究缝洞型碳酸盐岩储层的非均质性

Application of fractal techniques in heterogeneous carbonate reservoir

分形几何理论已被广泛应用于储层非均质性研究中。运用分形理论的变尺度分析技术(R/S分析),通过对塔河油田奥陶系岩溶缝洞型碳酸盐岩储层测井曲线的分析,提出了利用DR指标计算岩溶缝洞型储层分维值的方法。对该地区岩溶缝洞发育的典型井段的测井数据进行了实际处理,并对岩溶缝洞发育程度定量评价进行了尝试性的解释,对分维值的高低与岩溶缝洞发育程度之间的关系进行了初步研究。

Fractal theory has been widely used in the description of reservoir heterogeneity. Through an analysis of logging data from the Ordovician fractured reservoirs in Tahe oilfield, a fractal method for calculation of fractal dimension was developed. The study of the relationship between enrichment of karstfissurecavity and fractal dimension was carried out. The results were used for quantitative evaluation of the fractured reservoirs in the oilfield.