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DIRECT NUMERICAL MODELING OF PETROPHYSICAL PROPERTIES ON THE BASIS OF IMAGES IN SIMILATED CONDITIONS OF STRESSED DEFORMED CONDITION

机译:应力变形条件模拟条件下基于图像的岩石物理性质的直接数值模拟

摘要

The invention proposed a test system for performing direct numerical simulation based on images to determine the petrophysical properties of a rock sample under simulated deformation conditions, reflecting, for example, subsurface conditions. The digital volumetric image corresponding to x-ray tomographic images of a rock sample is broken down into significant elastic phases, such as the pore space, the clay fraction, the contact areas of the grains and the type of mineral, after which an unstructured finite element mesh is superimposed on it. A simulated deformation is superimposed on a segmented volumetric image, and the resulting deformed unstructured mesh is analyzed numerically, for example, by direct numerical simulation, in order to determine the required petrophysical properties.
机译:本发明提出了一种测试系统,该测试系统用于基于图像执行直接数值模拟以确定在模拟变形条件下(例如,反映地下条件)的岩石样品的岩石物理特性。与岩石样品的X射线断层扫描图像相对应的数字体积图像被分解为显着的弹性相,例如孔隙空间,粘土成分,颗粒的接触面积和矿物的类型,然后是非结构化有限单元网格叠加在其上。将模拟的变形叠加在分段的体积图像上,并对形成的变形的非结构化网格进行数值分析,例如通过直接数值模拟,以确定所需的岩石物理特性。

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