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Xiao, C. (author), Lin, H.X. (author), Leeuwenburgh, O. (author), Heemink, A.W. (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...
journal article 2022
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Leeuwenburgh, O. (author), Emerick, Alexandre A. (author), Jafarpour, Behnam (author), Zhang, Dongxiao (author), Luo, Xiaodong (author)
contribution to periodical 2021
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Paknahad, A. (author), Goudarzi, M. (author), Kucko, Nathan W. (author), Leeuwenburgh, Sander C.G. (author), Sluys, Lambertus J. (author)
Calcium phosphate cements (CPCs) have been widely used during the past decades as biocompatible bone substitution in maxillofacial, oral and orthopedic surgery. CPCs are injectable and are chemically resemblant to the mineral phase of native bone. Nevertheless, their low fracture toughness and high brittleness reduce their clinical...
journal article 2021
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Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A.W. (author)
Imaging-type monitoring techniques are used in monitoring dynamic processes in many domains, including medicine, engineering, and geophysics. This paper aims to propose an efficient workflow for application of such data for the conditioning of simulation models. Such applications are very common in e.g. the geosciences, where large-scale...
journal article 2021
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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...
journal article 2020
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Paknahad, A. (author), Kucko, Nathan W. (author), Leeuwenburgh, Sander C.G. (author), Sluys, Lambertus J. (author)
Since their discovery in the 1980s, injectable self-setting calcium phosphate cements (CPCs) are frequently used in orthopedic, oral and maxillofacial surgery due to their chemical resemblance to the mineral phase of native bone. However, these cements are very brittle, which complicates their application in load-bearing anatomical sites....
journal article 2020
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Paknahad, A. (author), Petre, Daniela G. (author), Leeuwenburgh, Sander C.G. (author), Sluys, Lambertus J. (author)
Because of their chemical similarity to the mineral phase of bone and teeth, calcium phosphate cements (CPCs) are extensively investigated for applications in biomedicine. Nevertheless, their applicability in load-bearing anatomical sites is restricted by their brittleness. Reinforcement of calcium phosphate cements with polymeric fibers can...
journal article 2019
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Petre, Daniela Geta (author), Nadar, Robin (author), Tu, Yingfeng (author), Paknahad, A. (author), Wilson, Daniela A. (author), Leeuwenburgh, Sander C.G. (author)
Calcium phosphate ceramics are frequently applied to stimulate regeneration of bone in view of their excellent biological compatibility with bone tissue. Unfortunately, these bioceramics are also highly brittle. To improve their toughness, fibers can be incorporated as the reinforcing component for the calcium phosphate cements. Herein, we...
journal article 2019
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Leeuwenburgh, Sander C.G. (author), De Belie, Nele (author), van der Zwaag, S. (author)
contribution to periodical 2018
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Sangers, M. (author), Trujillo, R. (author), Voskov, D.V. (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...
conference paper 2018
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Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A.W. (author)
This paper presents a non-intrusive subdomain POD-TPWL (SD POD-TPWL) for reservoir history matching through integrating domain decomposition (DD), proper orthogonal decomposition (POD), radial basis function (RBF) interpolation, and the trajectory piecewise linearization (TPWL). It is an efficient approach for model reduction and linearization...
journal article 2018
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Trujillo, R. (author), Voskov, D.V. (author), Leeuwenburgh, O. (author)
In-depth water diversion is a chemical Enhanced Oil Recovery (EOR) method that has been gaining acceptance recently for several reasons. One of them is the fact that sodium silicate, used in this method, is one of the few green chemicals used in EOR. In addition, this chemical has shown the ability to generate thermally activated plugs far away...
conference paper 2018
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Hajibeygi, H. (author), Jansen, J.D. (author), Leeuwenburgh, O. (author), Voskov, D.V. (author)
contribution to periodical 2017
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Fonseca, R.M. (author), Leeuwenburgh, O. (author), Della Rossa, E (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)
We consider robust ensemble-based (EnOpt) multiobjective production optimization of on/off inflow-control devices (ICDs) for a sector model inspired by a real-field case. The use of on/off valves as optimization variables leads to a discrete control problem. We propose a reparameterization of such discrete controls in terms of switching times...
conference paper 2015
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Fonseca, R.M. (author), Kahrobaei, S.S. (author), Van-Gastel, L. J T (author), Leeuwenburgh, O. (author), Jansen, J.D. (author)
With an increase in the number of applications of ensemble optimization (EnOpt) for production optimization, the theoretical understanding of the gradient quality has received little attention. An important factor that influences the quality of the gradient estimate is the number of samples. In this study we use principles from statistical...
conference paper 2015
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Goncalves Dias De Barros, E. (author), Leeuwenburgh, O. (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)
This paper extends previous work on value of information (VOI) assessment in closed-loop reservoir management (CLRM) to estimate the added value of performing multiple measurements along the producing life of the reservoir. The new procedure is based on the workflow from our previous paper which allows to quantify the VOI of a single observation...
conference paper 2015
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Fonseca, R.M. (author), Stordahl, A. (author), Leeuwenburgh, O. (author), Van den Hof, P.M.J. (author), Jansen, J.D. (author)
We consider robust ensemble-based multi-objective optimization using a hierarchical switching algorithm for combined long-term and short term water flooding optimization. We apply a modified formulation of the ensemble gradient which results in improved performance compared to earlier formulations. We also apply multi-dimensional scaling to...
conference paper 2014
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Fonseca, R.M. (author), Leeuwenburgh, O. (author), Van den Hof, P.M.J. (author), Jansen, J.D. (author)
In an earlier study two hierarchical multi-objective methods were suggested to include short-term targets in life-cycle production optimization. However this earlier study has two limitations: 1) the adjoint formulation is used to obtain gradient information, requiring simulator source code access and an extensive implementation effort, and 2)...
journal article 2014
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Poldervaart, M.T. (author), Wang, H. (author), Van der Stok, J. (author), Weinans, H.H. (author), Leeuwenburgh, S.C.G. (author), Cumhur Öner, F. (author), Dhert, W.J.A. (author), Alblas, J. (author)
The design of bioactive three-dimensional (3D) scaffolds is a major focus in bone tissue engineering. Incorporation of growth factors into bioprinted scaffolds offers many new possibilities regarding both biological and architectural properties of the scaffolds. This study investigates whether the sustained release of bone morphogenetic protein...
journal article 2013
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Van der Stok, J. (author), Wang, H. (author), Yavari, S.A. (author), Siebelt, M. (author), Sandker, M. (author), Waarsing, J.H. (author), Verhaar, J.A.N. (author), Jahr, H. (author), Zadpoor, A.A. (author), Leeuwenburgh, S.C.G. (author), Weinans, H. (author)
Porous titanium scaffolds are a promising class of biomaterials for grafting large bone defects, because titanium provides sufficient mechanical support, whereas its porous structure allows bone ingrowth resulting in good osseointegration. To reinforce porous titanium scaffolds with biological cues that enhance and continue bone regeneration,...
journal article 2013
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