Browsing Vitenskapelige publikasjoner (TN-IER) by Author "Lorentzen, Rolf Johan"
Now showing items 1-2 of 2
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Adaptive machine learning-based surrogate modeling to accelerate PDE-constrained optimization in enhanced oil recovery
Keil, Tim; Kleikamp, Hendrik; Lorentzen, Rolf Johan; Oguntola, Micheal Babatunde; Ohlberger, Mario (Peer reviewed; Journal article, 2022)In this contribution, we develop an efficient surrogate modeling framework for simulation-based optimization of enhanced oil recovery, where we particularly focus on polymer flooding. The computational approach is based ... -
A natural Hessian approximation for ensemble based optimization
Zhang, Yiteng; Stordal, Andreas Størksen; Lorentzen, Rolf Johan (Peer reviewed; Journal article, 2023)A key challenge in reservoir management and other fields of engineering involves optimizing a nonlinear function iteratively. Due to the lack of available gradients in commercial reservoir simulators the attention over the ...