We present a finite element simulation approach to compute rock elastic moduli that is based on a grain-grain contact methodology, moving away from the common approach of modeling the solid framework as a whole, thus, the individual grains are not distinguished. In this approach we are able to address the grain-grain contact problem associated with the different degrees of consolidation found in reservoir rocks. Three important elements in this workflow are, a robust grain-grain segmentation method, a conformal meshing algorithm, and the grain-grain contact physics. We present benchmark results in four cases from literature and compare with laboratory and other results from elastic solvers that do not model explicitly grain-grain contacts. Finally, we discuss options to estimate and model the strength of the contacts, relating to the degree of consolidation of the rocks.

我们提出了一种基于颗粒-颗粒接触方法的岩石弹性模量的有限元模拟方法，摆脱了对整个实体框架进行建模的通用方法，因此无法区分单个颗粒。通过这种方法，我们能够解决与储层岩石中固结程度不同相关的晶粒与颗粒之间的接触问题。此工作流程中的三个重要元素是：鲁棒的颗粒-颗粒分割方法，保形网格划分算法和颗粒-颗粒接触物理。我们从文献中介绍了四种情况下的基准结果，并与未明确模拟颗粒-颗粒接触的弹性解算器的实验室结果和其他结果进行了比较。最后，我们讨论了估算和建模联系强度的方法，