Search Results for author: Louis J. Durlofsky

Found 13 papers, 0 papers with code

Graph Network Surrogate Model for Subsurface Flow Optimization

no code implementations14 Dec 2023 Haoyu Tang, Louis J. Durlofsky

Results are presented for a large set of test cases, in which five injection wells and five production wells are placed randomly throughout the model, with a random control variable (bottom-hole pressure) assigned to each well.

History Matching for Geological Carbon Storage using Data-Space Inversion with Spatio-Temporal Data Parameterization

no code implementations5 Oct 2023 Su Jiang, Louis J. Durlofsky

In this study, we develop and implement (in DSI) a deep-learning-based parameterization to represent spatio-temporal pressure and CO2 saturation fields at a set of time steps.

Dimensionality Reduction

Surrogate Model for Geological CO2 Storage and Its Use in Hierarchical MCMC History Matching

no code implementations11 Aug 2023 Yifu Han, Francois P. Hamon, Su Jiang, Louis J. Durlofsky

The trained surrogate model is shown to provide accurate predictions for new realizations over the full range of geological scenarios, with median relative error of 1. 3% in pressure and 4. 5% in saturation.

Multi-Asset Closed-Loop Reservoir Management Using Deep Reinforcement Learning

no code implementations21 Jul 2022 Yusuf Nasir, Louis J. Durlofsky

In both cases, four assets with different well counts, well configurations, and geostatistical descriptions are considered.

Management reinforcement-learning +1

Use of Multifidelity Training Data and Transfer Learning for Efficient Construction of Subsurface Flow Surrogate Models

no code implementations23 Apr 2022 Su Jiang, Louis J. Durlofsky

The multifidelity surrogate is also applied for history matching using an ensemble-based procedure, where accuracy relative to reference results is again demonstrated.

Transfer Learning

Deep reinforcement learning for optimal well control in subsurface systems with uncertain geology

no code implementations24 Mar 2022 Yusuf Nasir, Louis J. Durlofsky

The DRL-based methodology is shown to result in an NPV increase of 15% (for the 2D cases) and 33% (3D cases) relative to robust optimization over prior models, and to an average improvement of 4% in NPV relative to traditional CLRM.

Decision Making Management +1

Convolutional-Recurrent Neural Network Proxy for Robust Optimization and Closed-Loop Reservoir Management

no code implementations14 Mar 2022 Yong Do Kim, Louis J. Durlofsky

The CNN-RNN proxy is trained using simulation results for 300 different sets of BHP schedules and permeability realizations.

Management

Use of low-fidelity models with machine-learning error correction for well placement optimization

no code implementations30 Oct 2021 Haoyu Tang, Louis J. Durlofsky

In this work, we present an optimization framework in which these simulations are performed with low-fidelity (LF) models.

Deep-learning-based coupled flow-geomechanics surrogate model for CO$_2$ sequestration

no code implementations4 May 2021 Meng Tang, Xin Ju, Louis J. Durlofsky

The surrogate model is trained to predict the 3D CO2 saturation and pressure fields in the storage aquifer, and 2D displacement maps at the Earth's surface.

3D CNN-PCA: A Deep-Learning-Based Parameterization for Complex Geomodels

no code implementations16 Jul 2020 Yimin Liu, Louis J. Durlofsky

Geological parameterization enables the representation of geomodels in terms of a relatively small set of variables.

Uncertainty Quantification Video Classification

Data-Space Inversion Using a Recurrent Autoencoder for Time-Series Parameterization

no code implementations30 Apr 2020 Su Jiang, Louis J. Durlofsky

Data-space inversion (DSI) and related procedures represent a family of methods applicable for data assimilation in subsurface flow settings.

Dimensionality Reduction Time Series +1

A deep-learning-based surrogate model for data assimilation in dynamic subsurface flow problems

no code implementations16 Aug 2019 Meng Tang, Yimin Liu, Louis J. Durlofsky

High-fidelity numerical simulation results for the posterior geomodels (generated by the surrogate-based data assimilation procedure) are shown to be in essential agreement with the recurrent R-U-Net predictions.

A Deep-Learning-Based Geological Parameterization for History Matching Complex Models

no code implementations7 Jul 2018 Yimin Liu, Wenyue Sun, Louis J. Durlofsky

The metrics are based on summary statistics of the nonlinear filter responses of geological models to a pre-trained deep CNN.

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