Abstract
Model-based dynamic optimization of the water-flooding process in oil reservoirs is a computationally complex problem and suffers from high levels of uncertainty. A traditional way of quantifying uncertainty in robust water-flooding optimization is by considering an ensemble of uncertain model realizations. These models are generally not validated with data and the resulting robust optimization strategies are mostly offline or open-loop. The main focus of this work is to develop an adaptive or online robust optimization scheme using residual analysis as a major ingredient. The models in an ensemble are confronted with data and an adapted ensemble is formed with only those models that are not invalidated. As a next step, the robust optimization is again performed (i.e., updated/adjusted) with this adapted ensemble. The adapted ensemble gives a less conservative description of uncertainty and also reduces the high computational cost involved in robust optimization. Simulation example shows that an increase in the objective function value with a reduction of uncertainty on these values is obtained with the developed adaptive robust scheme compared to an open-loop offline robust strategy with the full ensemble and an adaptive scheme using Ensemble Kalman Filter (EnKF), which is one of the most common parameter estimation methods in reservoir simulations.
Original language | English |
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Title of host publication | 20th World Congress of the International Federation of Automatic Control (IFAC), 2017 |
Editors | D. Dochain, D. Henrion, D. Peaucelle |
Publisher | Elsevier |
Pages | 11275-11280 |
Number of pages | 6 |
Volume | 50 |
Edition | 1 |
DOIs | |
Publication status | Published - 1 Jul 2017 |
Event | 20th World Congress of the International Federation of Automatic Control (IFAC), 2017 - Toulouse, France Duration: 9 Jul 2017 → 14 Jul 2017 Conference number: 20 https://www.ifac2017.org |
Publication series
Name | IFAC papers online |
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Publisher | Elsevier |
Volume | 50 |
ISSN (Electronic) | 2405-8963 |
Conference
Conference | 20th World Congress of the International Federation of Automatic Control (IFAC), 2017 |
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Abbreviated title | IFAC 2017 |
Country/Territory | France |
City | Toulouse |
Period | 9/07/17 → 14/07/17 |
Internet address |
Keywords
- online robust optimization
- residual analysis
- Uncertainty handling
- water-flooding optimization