SYSTEMS AND METHODS FOR ESTIMATING MECHANICAL PROPERTIES OF ROCKS USING GRAIN CONTACT MODELS

摘要

A method for analyzing a rock sample to determine a mechanical property of the rock sample includes (a) segmenting a digital image volume corresponding to an image of the rock sample. In addition, the method includes (b) partitioning the digital image volume to associate a plurality of voxels in the digital image volume with a plurality of grains of the rock sample. Further, the method includes (c) determining the voxels of the plurality of voxels that are adjacent to each other to identify a plurality of contact interfaces between the grains. Still further, the method includes (d) determining a contact area of each of the contact interfaces using adjacent voxels at the corresponding grain-grain interface. The method also includes (e) determining a number of contact interfaces that each grain of the plurality of grains has with each adjacent grain. Moreover, the method includes (f) determining the one or more mechanical properties of the rock sample based on the number of the contact interfaces of each of the plurality of grains and the contact area of each of the contact interfaces.