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岩石三维网络模型构建的实验和模拟研究 被引量:24

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摘要 岩石网络模型的构建是实现微观渗流实验和模拟研究有机结合的关键技术之一.提出了基于CT扫描图像的三维网络模型的构建方法.借助工业用微焦点CT系统,获取一系列的能够真实描述岩石的微观孔隙结构和流体分布的CT切片图像.在提取孔隙空间骨架、喉道信息以及孔隙信息的基础上建立相应的网络模型,实现CT三维图像信息向孔隙/喉道大小分布以及拓扑信息的转化.这种方法的特点在于能够在保持几何学特征和流动特征不变的情况下用简单的几何形状的孔隙和喉道来表征岩石内复杂的孔隙空间.将水驱和聚合物驱CT实验与网络模拟结果对比,所建三维网络模型计算参数与室内实验获得的孔隙度、绝对渗透率、相渗曲线和微观剩余油分布等结果吻合较好,表明该网络模型能很好地表征岩石微观的孔喉尺寸和拓扑性质.
出处 《中国科学(G辑)》 CSCD 2008年第11期1563-1575,共13页
基金 国家自然科学基金资助项目(批准号:10302021 10772200)
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参考文献20

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