基于数字图像处理的非均质岩石材料细观尺度应力分析
发布时间：2019-08-06 07:05
【摘要】：以冀中坳陷碳酸盐岩储层为例,利用碳酸盐岩微观结构的图像信息,确定地应力数值模拟计算网格的合适尺寸,将数字图像处理技术引入非均质碳酸盐岩岩石材料细观尺度的应力分布计算中,将表征岩石细观结构特征的量与岩石物理力学参数等宏观的量有机结合,精确预测碳酸盐岩非均质储层裂缝发育及分布的区域。结果表明:研究区域最大水平主应力为-59.51~-95.09 MPa,最小水平主应力为-34.05~-52.58 MPa;Mises等效应力为56.84~83.15 MPa;研究区域最大总应变为2.097×10-4,最小总应变为1.392×10-4;岩心样品在左上区域和右下区域均出现应力集中和变形不协调的情况,预测为裂缝主要扩展和分布的区域;基于数字图像处理技术能够更真实、有效地表征储层岩石的非均质性。
[Abstract]:Taking carbonate reservoir in Jizhong depression as an example, the suitable size of geostress numerical simulation grid is determined by using the image information of carbonate microstructure. The digital image processing technology is introduced into the meso-scale stress distribution calculation of heterogeneous carbonate rock materials, and the amount that characterizes the meso-structure characteristics of rock is organically combined with the macroscopic quantity such as rock physical and mechanical parameters. Accurate prediction of fracture development and distribution in carbonate heterogeneous reservoirs. The results show that the maximum horizontal principal stress in the study area is-59.51 鈮，
本文编号：2523393
[Abstract]:Taking carbonate reservoir in Jizhong depression as an example, the suitable size of geostress numerical simulation grid is determined by using the image information of carbonate microstructure. The digital image processing technology is introduced into the meso-scale stress distribution calculation of heterogeneous carbonate rock materials, and the amount that characterizes the meso-structure characteristics of rock is organically combined with the macroscopic quantity such as rock physical and mechanical parameters. Accurate prediction of fracture development and distribution in carbonate heterogeneous reservoirs. The results show that the maximum horizontal principal stress in the study area is-59.51 鈮，
本文编号：2523393
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