资源环境科技发展态势分析平台

A challenge in utilizing pore‐scale information in sub‐surface transport calculations is the small field of view of tomographic imaging methods resolving pore‐scale features. While low‐resolution tomography provides a larger field of view, critical connectivity information may not be resolved, or lost in the upscaling process. In this work we present a multi‐scale upscaling approach utilizing regional morphological measures – Minkowski maps – at two different resolutions. The workflow consists of the definition of high‐resolution rock‐types and their characterisation, followed by an image registration process to lower resolution tomograms, a projection of the high‐resolution rock‐types to low‐resolution Minkowski maps via support vector machines, and application of high‐resolution transport characteristics to the low resolution rock‐types, followed by upscaling. The method is applied to a complex thinly laminated reservoir sandstone. Upscaled permeability and electrical conductivity agree well with full‐resolution calculations.

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