【摘要】：針對單一分辨率的數(shù)字巖心模型無法完整描述巖心不同尺度結(jié)構(gòu)信息的問題,以砂巖樣品為例,通過對巖心多分辨率CT成像,采用基于特征的圖像配準(zhǔn)方法實(shí)現(xiàn)了不同分辨率巖心圖像的精確匹配。通過融合不同分辨率巖心掃描圖像進(jìn)行孔隙分割和礦物分割,構(gòu)建多尺度、多組分的數(shù)字巖心模型。結(jié)果表明:多尺度多組分?jǐn)?shù)字巖心模型可以表征跨尺度的巖心孔隙結(jié)構(gòu),孔隙分布與核磁測量結(jié)果有較好的一致性;與Qemscan相比,數(shù)字巖心礦物體積分?jǐn)?shù)同X衍射測定結(jié)果更吻合,真實(shí)地還原了巖心不同組分的結(jié)構(gòu)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.
【作者單位】： 中國石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;中國石油長慶油田分公司第五采油廠;中國石油長慶油田分公司第八采油廠;
【基金】：國家自然科學(xué)基金項(xiàng)目(41374124,41574122) 國家科技重大專項(xiàng)(2016ZX05006002-004)~~
【分類號】：P618.13
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本文編號：2255641