致密砂岩储层胶结指数计算方法研究
摘要
致密砂岩储层由于其复杂的孔隙结构和极强的非均质性,导致岩石岩电关系不满足经典的阿尔奇公式,给储层含水饱和度评价带来极大的挑战。通过对国内西部某油田致密砂岩32块岩芯电阻率实验结果进行分析的基础上,研究了胶结指数与孔隙度之间的相关关系,并建立了相应的致密砂岩储层胶结指数估算模型。岩芯处理结果表明,利用所述的方法更能够准确地反映致密岩石孔隙度和地层因素之间的相关关系,估算的胶结指数与岩芯实验结果具有较好的一致性。
引文
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