过程模拟法重建三维数字岩芯的准确性评价

西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (2): 71-76.

过程模拟法重建三维数字岩芯的准确性评价

闫国亮1，孙建孟1，刘学锋2，张丽1

1. 中国石油大学（华东）地球科学与技术学院，山东青岛266580；2. 中国石油大学（华东）理学院，山东青岛266580

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-04-01 发布日期:2013-04-01

Accuracy Evaluation on 3D Digital Cores Reconstruction byProcess-based Method

Yan Guoliang1, Sun Jianmeng1, Liu Xuefeng2, Zhang Li1

1. School of Geosciences，China University of Petroleum，Qingdao，Shandong 266580，China2. College of Science，China University of Petroleum，Qingdao，Shandong 266580，China

Received:1900-01-01 Revised:1900-01-01 Online:2013-04-01 Published:2013-04-01

摘要/Abstract

摘要： 由于利用X 射线CT 扫描获得反映真实岩石微观结构的三维数字岩芯过于昂贵和费时，因此，正确评价利用
岩芯二维薄片图像重建三维数字岩芯的准确性具有重要理论和应用价值。采用过程模拟法，依据岩芯的二维薄片图
像，通过模拟真实岩石的形成过程沉积过程，压实过程和成岩作用重建了三维数字岩芯，并且应用局部孔隙度分
布函数和平均渗流概率函数进行了重建三维数字岩芯的准确性评价。结果表明：过程模拟法重建的三维数字岩芯与
真实岩芯具有相同的均匀性和连通性，且重建三维数字岩芯与真实数字岩芯都是各向同性的。重建的三维数字岩芯
不仅可以用来表征真实岩芯的孔隙结构，而且也可以作为其他岩石物理属性模拟的基础。

关键词: 三维数字岩芯, 过程模拟法, 局部孔隙度分布函数, 平均渗流概率函数, 二维薄片

Abstract: It is too expensive and time consuming by use X-ray computerized tomography（CT）to obtain the real 3D digital
cores for representing the true microstructures of rocks. It is important in both theory and applications to reconstruct 3D
digital cores based on 2D thin section of rocks and evaluate the accuracy of reconstructed digital cores. 3D digital core was
reconstructed utilizing petrographical information obtained from two dimensional thin sections to model the results of the main
sedimentary rocks forming processes-sedimentation，compaction，and diagenesis. The accuracy of this method is evaluated
by calculating local porosity distribution function and average percolation probability function in real 3D digital cores and the
reconstructed digital cores. The results show that the homogeneity and connectivity of reconstructed three-dimension digital
core by process-based method are similar to those of true 3D digital core and both of the reconstructed 3D digital core and true
3D digital core are isotropic. Reconstruction of 3D digital cores can be used to characterize the pore structure of the true core，
and can also be used as the basis for simulation of other physical properties.

Key words: 3D digital core, process-based method, local porosity distribution function, average percolation probability function, 2D thin section

闫国亮;孙建孟;刘学锋;张丽. 过程模拟法重建三维数字岩芯的准确性评价[J]. 西南石油大学学报(自然科学版), 2013, 35(2): 71-76.

Yan Guoliang;Sun Jianmeng;Liu Xuefeng;Zhang Li. Accuracy Evaluation on 3D Digital Cores Reconstruction byProcess-based Method[J]. 西南石油大学学报(自然科学版), 2013, 35(2): 71-76.