基于砂岩三维数字岩心图像的图像处理与相划分研究

发布时间：2018-01-31 17:05

本文关键词： 图像处理 CT扫描成像砂岩岩心相划分　出处：《科学技术与工程》2017年06期 　论文类型：期刊论文

【摘要】：CT成像设备的发展和普及在石油工程、地球科学、地质学等领域和学科内发挥着越来越重要的作用。CT扫描成像可以在样本无损的条件下岩心等进行扫描重构获得的三维数字岩心图像,可以较为清楚的反映岩心内部结构;同时,基于CT扫描的岩心三维图像的分析,为油藏驱替原理分析和油田生产等方面有着重要的意义和作用。主要基于某砂岩岩心CT扫描后的重构灰度图,开发了一套应用于石油工程领域砂岩三维数字岩心图像的处理方法。首先,对图像处理过程中所应用的滤波和蒙版处理方法进行了简单的介绍;其次,详细介绍各图像滤波和蒙版处理方法的原理与其在三维数字岩心图像上的应用;最后在处理优化的图像之上,运用区域限定和活动收敛轮廓的方法,从而获得适用于油藏工程数值模拟分析的分相图像,将原始的数字岩心灰度图像划分成为了含孔隙、颗粒骨架和泥质三相的相划分图像。
[Abstract]:The development and popularization of CT imaging equipment in petroleum engineering, geoscience. Geology and other fields and disciplines play a more and more important role. Ct scanning imaging can be used to reconstruct the three-dimensional digital core images under the condition of non-destructive samples. The inner structure of the core can be clearly reflected; At the same time, the analysis of the core 3D image based on CT scan plays an important role in the analysis of reservoir displacement principle and oil field production, mainly based on the reconstructed gray scale map of a sandstone core after CT scan. A set of processing methods for 3D digital core image of sandstone in petroleum engineering is developed. Firstly, the filtering and mask processing methods used in image processing are introduced briefly. Secondly, the principle of each image filter and mask processing method and its application in 3D digital core image are introduced in detail. Finally, on the top of the optimized image, using the method of region limitation and active convergent contour, the phase separation image which is suitable for reservoir engineering numerical simulation analysis is obtained. The original digital core grayscale image is divided into three phases which contain pore, granular skeleton and muddy.
【作者单位】：北京大学地球与空间科学学院;北京大学石油与天然气研究中心;中国石油大学(华东)计算机与通信工程学院;中国石油勘探开发研究院;北京大学地球科学国家级虚拟仿真实验教学中心;
【基金】：国家科技重大专项(2011ZX05020-008) 国土资源部“十二五”重点项目(1212011220352) 国家科技重大专项课题(2011ZX05010-001)资助
【分类号】：TE19
【正文快照】： 北京大学地球科学国家级虚拟仿真实验教学中心5,北京100871)国土资源部“十二五”重点项目(1212011220352)、引用格式:刘培刚,刘钰洋,潘懋,等.基于砂岩三维数字岩心图像的图像处理与相划分研究[J].科学技术与工程,2017,17(6):22—30Liu Peigang,Liu Yuyang,Pan Mao,et al.Rese

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