An efficient, numerical local upscaling technique for estimating elastic geomechanical properties in heterogeneous continua is proposed. The upscaled anisotropic elastic properties are solved locally with various boundary conditions and reproduce the anisotropic geomechanical response of fine-scale simulations of sand–shale sequence models with horizontal and inclined shale bedding planes. The algorithm is automated in a parallel program and can be used to determine optimum upscaling ratios in different regions of the reservoir. The successful application of the proposed upscaling method in a field-scale coupled reservoir–geomechanics simulation demonstrates an improvement in overall computational efficiency while maintaining accuracy in the geomechanical response and reservoir performance.

中文翻译：

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非均质连续体弹性地质力学特性的数值局部放大

提出了一种有效的数值局部放大技术，用于估计非均质连续体中的弹性地质力学特性。使用各种边界条件局部求解放大的各向异性弹性特性，并再现具有水平和倾斜页岩层理面的砂-页岩层序模型精细模拟的各向异性地质力学响应。该算法在并行程序中自动化，可用于确定储层不同区域的最佳放大比例。所提出的放大方法在现场规模耦合储层-地质力学模拟中的成功应用表明，整体计算效率有所提高，同时保持了地质力学响应和储层性能的准确性。