碳酸盐岩储层孔喉结构和储层参数的分析与反演Analysis and Inversion of the Pore-Throat Structure Parameters and Reservoir Parameters of the Carbonate Reservoir
杨敬红;李雄炎;秦瑞宝;刘春成;
摘要(Abstract):
针对强非均质性碳酸盐岩储层微观孔喉结构差异所导致的孔隙度相似、渗透率和饱和度存在较大差异这一现象,开展了孔喉结构的评价。基于孔隙度和渗透率,衍生出储层参数RQI和RQF;划分了压汞曲线的类型、分析了压汞曲线的形态,提取了异于砂岩的压汞参数(SHg/pc)max;同时引入胶结指数m值。以RQI和RQF为核心参数,建立各参数间的函数关系,以满足资料丰度较弱的情况下孔喉结构的评价需求。另外,基于(SHg/pc)max与RQI之间的相关性,在每个进汞压力测试点下,建立了SHg与RQI之间的函数关系,达到重构压汞曲线的目的。鉴于核磁T2几何平均值与RQI之间的相关性,可以利用T2几何平均值反演储层的渗透率。分析碳酸盐岩储层孔喉结构和储层参数之间的关系,为完成孔喉结构的评价和储层参数的反演奠定了一定的理论和实践基础。
关键词(KeyWords): 碳酸盐岩;孔喉结构;储层参数;压汞曲线;参数分析;参数反演;T2几何平均值
基金项目(Foundation): 国家重大专项“海外大陆边缘盆地勘探开发实用新技术研究”(2011ZX05030)
作者(Author): 杨敬红;李雄炎;秦瑞宝;刘春成;
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DOI:
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