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- Title
Generalizable Permeability Prediction of Digital Porous Media via a Novel Multi‐Scale 3D Convolutional Neural Network.
- Authors
Elmorsy, Mohamed; El‐Dakhakhni, Wael; Zhao, Benzhong
- Abstract
Subsurface characterization is critical in understanding and controlling many natural and industrial processes including groundwater movement, oil extraction, and geological carbon dioxide sequestration. While recent advances in three‐dimensional (3D) imaging of core samples have enabled digital subsurface characterization, the exorbitant computational cost associated with direct numerical simulation in 3D remains a persistent challenge. In contrast, machine learning models are much more efficient, though their use in subsurface characterization is still in its infancy. Here, we introduce a novel 3D convolutional neural network (CNN) for end‐to‐end prediction of permeability, which is a fundamental characteristic of subsurface porous media. We show that increasing the dataset size and diversity, utilizing multi‐scale feature aggregation, and optimizing the network architecture elevate the model accuracy beyond that of existing state‐of‐the‐art 3D CNN models for permeability prediction. We demonstrate that the model is generalizable, and it is capable of predicting the permeability of previously unseen samples with an excellent accuracy. Key Points: We introduce a novel three‐dimensional convolutional neural network model for end‐to‐end permeability predictions with excellent accuracyThe accuracy results from increasing dataset diversity and size, using multi‐scale feature aggregation, and optimizing network architectureThe model is generalizable, and it is capable of predicting the permeability of previously unseen samples
- Subjects
CONVOLUTIONAL neural networks; GEOLOGICAL carbon sequestration; POROUS materials; PERMEABILITY; ARTIFICIAL neural networks; MANUFACTURING processes
- Publication
Water Resources Research, 2022, Vol 58, Issue 3, p1
- ISSN
0043-1397
- Publication type
Article
- DOI
10.1029/2021WR031454