基于多分辨率图像融合的多尺度多组分数字岩心构建
发布时间：2018-10-07 20:56
【摘要】：针对单一分辨率的数字岩心模型无法完整描述岩心不同尺度结构信息的问题,以砂岩样品为例,通过对岩心多分辨率CT成像,采用基于特征的图像配准方法实现了不同分辨率岩心图像的精确匹配。通过融合不同分辨率岩心扫描图像进行孔隙分割和矿物分割,构建多尺度、多组分的数字岩心模型。结果表明:多尺度多组分数字岩心模型可以表征跨尺度的岩心孔隙结构,孔隙分布与核磁测量结果有较好的一致性;与Qemscan相比,数字岩心矿物体积分数同X衍射测定结果更吻合,真实地还原了岩心不同组分的结构信息。
[Abstract]:In order to solve the problem that the digital core model with single resolution can not completely describe the structure information of the core at different scales, taking the sandstone sample as an example, the multi-resolution CT imaging of the core is carried out. The feature-based image registration method is used to match the core images with different resolution. A multi-scale and multi-component digital core model was constructed by fusion of different resolution core scanning images for pore segmentation and mineral segmentation. The results show that the multi-scale multi-component digital core model can characterize the pore structure of cross-scale core, and the pore distribution is in good agreement with the measured results of nuclear magnetic field, and compared with Qemscan, the pore distribution of the core is consistent with that of the nuclear magnetic field measurement. The volume fraction of mineral in digital core is in better agreement with the results of X-ray diffraction, and the structure information of different components in the core is really reduced.
【作者单位】： 中国石油大学(华东)地球科学与技术学院;中国石油长庆油田分公司第五采油厂;中国石油长庆油田分公司第八采油厂;
【基金】：国家自然科学基金项目(41374124,41574122) 国家科技重大专项(2016ZX05006002-004)~~
【分类号】：P618.13
，
本文编号：2255641
[Abstract]:In order to solve the problem that the digital core model with single resolution can not completely describe the structure information of the core at different scales, taking the sandstone sample as an example, the multi-resolution CT imaging of the core is carried out. The feature-based image registration method is used to match the core images with different resolution. A multi-scale and multi-component digital core model was constructed by fusion of different resolution core scanning images for pore segmentation and mineral segmentation. The results show that the multi-scale multi-component digital core model can characterize the pore structure of cross-scale core, and the pore distribution is in good agreement with the measured results of nuclear magnetic field, and compared with Qemscan, the pore distribution of the core is consistent with that of the nuclear magnetic field measurement. The volume fraction of mineral in digital core is in better agreement with the results of X-ray diffraction, and the structure information of different components in the core is really reduced.
【作者单位】： 中国石油大学(华东)地球科学与技术学院;中国石油长庆油田分公司第五采油厂;中国石油长庆油田分公司第八采油厂;
【基金】：国家自然科学基金项目(41374124,41574122) 国家科技重大专项(2016ZX05006002-004)~~
【分类号】：P618.13
，
本文编号：2255641
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