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Xiao, C. (author), Lin, H.-X. (author), Leeuwenburgh, O. (author), Heemink, A. (author)History matching can play a key role in improving geological characterization and reducing the uncertainty of reservoir model predictions. Application of reservoir history matching is restricted by the huge computational cost by amongst others the many runs of the full model. Surrogate models with a reduced complexity are therefore used to...article 2022
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Candela, T. (author), Goncalves Machado, C. (author), Leeuwenburgh, O. (author), ter Heege, J.H. (author)A newly developed modelling framework is presented which specifically focusses on the central Oklahoma case and the high-volume injection of wastewater, which led to a surge of induced seismicity. However, the modelling framework is versatile enough to be applied to any anthropogenic subsurface activities and should be seen as a good practice to...article 2022
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- Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A.W. (author) article 2021
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Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A. (author)A reduced order modeling algorithm for the estimation of space varying parameter patterns in numerical models is proposed. In this approach domain decomposition is applied to construct separate approximations to the numerical model in every subdomain. We introduce a new local parameterization that decouples the computational cost of the...article 2021
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Eliasson, P. (author), Cerasi, P. (author), Romdhane, A. (author), White, J.C. (author), Schmidt-Hattenberger, C. (author), Carpentier, S.F.A. (author), Grimstad, A.A. (author), Lothe, A.E. (author), Blackford, J. (author), Wustefeld, A. (author), Dupuy, B. (author), Barros, E. (author), Leeuwenburgh, O. (author), Emmel, B. (author), Weinzierl, W. (author), Jordan, M. (author), Ringstad, C. (author)The three-year (2017-2020) research project Pre-ACT was granted as one of the first three large projects in the Accelerating CCS Technologies (ACT) program (https://act-ccs.eu). Pre-ACT was a collaborative effort between partners from six research institutes and four companies with an active role in CCS. The project ambition was to deliver...conference paper 2021
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van Wees, J.D. (author), van der Kuip, M. (author), Osinga, S. (author), Keijser, B. (author), van Westerloo, D. (author), Hanegraaf, M. (author), Pluymaekers, M. (author), Leeuwenburgh, O. (author), Brunner, L. (author), Tutu van Furth, M. (author)Background: On 26 November 2021, the world health organization (WHO) designated the coronavirus SARS-CoV-2 B.1.1.529 a variant of concern, named Omicron (WHO, 2021a). As of December 16, Omicron has been detected in 89 countries (WHO, 2021b). The thread posed by Omicron is highly uncertain. Methods and findings: For the analysis of the impact of...article 2021
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Barros, E.G.D. (author), Leeuwenburgh, O. (author), Szklarz, S.P. (author)We propose a quantitative model-based workflow for conformance verification of CO2 storage projects. Bayesian inference is applied to update an ensemble of simulation models that capture prior uncertainty based on mis matches with measured data. Conformance assessments are derived by comparison of updated model predictions with storage permit...article 2021
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- Leeuwenburgh, O. (author), Emerick, A.A. (author), Jafarpour, B. (author), Zhang, D. (author), Luo, X. (author) article 2021
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Barros, E. (author), Hanea, R. (author), Hustoft, L. (author), Leeuwenburgh, O. (author), Fonseca, R. (author)The development of oil and gas fields requires asset teams to make complex decisions in the presence of uncertainties. Studies of reservoir management strategies typically focus exclusively on geological uncertainties by working with an ensemble of reservoir model realizations. However, the development of hydrocarbon reservoirs is often also...conference paper 2020
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Barros, E.G.D. (author), Chitu, A. (author), Leeuwenburgh, O. (author)The general field development optimization problem is complex due to the potentially large number of controls of mixed type and discontinuities in the objective function related to varying numbers and types of wells being placed in a discretized grid. This may make the problem challenging or even unsuitable for certain types of optimization...article 2020
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Xiao, C. (author), Heemink, A. (author), Lin, H. (author), Leeuwenburgh, O. (author)Seismic history matching can play a key role in geological characterization and uncertainty quantification. However, challenges related to intensive computational demands and complexity restricts its application in many practical cases. This paper presents a conceptual deep-learning-based framework fully deployed in the popular Pytorch...conference paper 2020
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Ramaswamy, K.R. (author), Fonseca, R.M. (author), Leeuwenburgh, O. (author), Siraj, M.M. (author), van den Hof, P.M.J. (author)We are concerned with the efficiency of stochastic gradient estimation methods for large-scale nonlinear optimization in the presence of uncertainty. These methods aim to estimate an approximate gradient from a limited number of random input vector samples and corresponding objective function values. Ensemble methods usually employ Gaussian...article 2020
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- Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A. (author) article 2019
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Barros, E.G.D. (author), Leeuwenburgh, O. (author), Carpentier, S.F.A. (author), Wilschut, F. (author), Neele, F.P. (author)Managing the risk of unexpected events occurring during site operations and reducing operational costs are paramount to ensure the success of CO2 storage projects. For this purpose, operators need to design cost-effective monitoring systems to detect signals that can indicate whether or not the storage site behaves as expected and will continue...conference paper 2018
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Barros, E. (author), Leeuwenburgh, O. (author), Carpentier, S. (author), Wilschut, F. (author), Neele, F. (author)To manage risks in CO2 storage operations, monitoring systems need to be designed such that the data can inform the operator whether the storage site will continue to behave as expected or not. In order to compare the benefits of different monitoring strategies, we require a measure of ‘efficiency' that is based on a balance between monitoring...conference paper 2018
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Sangers, M. (author), Trujillo, R. (author), Voskov, D. (author), Leeuwenburgh, O. (author)We investigate the potential for improved recovery of subsurface energy resources (hydrocarbons or heat) through in-depth diversion technology. A number of pilot studies in the North Sea have demonstrated in recent years that sodium silicate can be used to block preferential flow paths and divert water to previously unswept areas of a reservoir....conference paper 2018
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Barros, E.G.D. (author), Leeuwenburgh, O. (author), Carpentier, S.F.A. (author), Wilschut, F. (author), Neele, F.P. (author)In this paper we address the challenge of efficient and reliable monitoring of subsurface CO2 storage operations for conformance verification purposes. In order to acquire a storage license, the operator has to demonstrate convincingly to the regulator that the operation of the site will conform to safety regulations, and that CO2 will remain...conference paper 2018
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Hanea, R.G. (author), Casanova, P. (author), Hustoft, L. (author), Bratvold, R.B. (author), Nair, R. (author), Hewson, C.W. (author), Leeuwenburgh, O. (author), Fonseca, R.M. (author)The goal of reservoir management is to make decisions with the objective of maximizing the value creation from the oil or gas production. In order to do this models that preserve geological realism and have predictive capabilities are being developed and used. These models are commonly calibrated by using Assisted History Matching (AHM) methods...conference paper 2017
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Feng, T. (author), Leeuwenburgh, O. (author), Hewson, C. (author), Hanea, R.G. (author)Alternating injection of water and gas (WAG) has been widely applied as an oil recovery strategy since the late 1950s. The expected benefits are improved macroscopic sweep, with the water and gas sweeping lower and upper zones of the reservoir respectively, and improved microscopic sweep due to various effects leading to lowering of the residual...conference paper 2017
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Zhang, Y. (author), Leeuwenburgh, O. (author), Carpentier, S. (author), Steeghs, P. (author)A distance parameterization of flood fronts derived from time-lapse seismic anomalies was recently developed to facilitate incorporation of time-lapse seismic data into history matching workflows based on ensemble methods such as the ensemble Kalman filter (EnKF) and the ensemble smoother (ES). A number of advantages were demonstrated on...conference paper 2017