Numerical modeling of the fluid flow impact of thin baffle laminae in cross bedding

摘要: [1] Thin layers of less permeable materials can occur in cross-bedded rocks and may function as flow baffles, thus influencing the bulk fluid flow. However, it be challenging to model their impact using standard grid-based techniques that only capture topology geometry accurately a large number small cells. In this paper, numerical method, recently developed by authors for modeling fault damage zones contain thin low-permeability strands, is demonstrated being applicable baffle laminae cross beds. This method does not require baffles discretized explicitly. For range permeability contrasts between rest matrix, upscaled values are derived models have same volumetric fraction material. The results show when completely connected, than cases where do form continuous impediment all levels contrast declines more steeply with increase contrast. effect layer configuration becomes apparent disconnected situation high. shown accurate efficient type work. These highlight importance capturing volume beds necessity appropriate techniques.