Andreas Størksen Stordal
Senior Researcher
asto@norceresearch.no
+47 51 87 56 36
Nygårdsgaten 112, 5008 Bergen, Norway
Division
Energy and Technology
Research Groups
Data Assimilation and Optimization
More information about Andreas
Projects
Publications
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Academic articleOffshore wind farm layout optimization using ensemble methods– Renewable Energy 2023
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Academic articleEffect of Music Therapy on Parent-Infant Bonding Among Infants Born Preterm: A Randomized Clinical Trial– JAMA Network Open 2023
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Academic articleAn organ deformation model using Bayesian inference to combine population and patient-specific data– Physics in Medicine and Biology 2023
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Academic articleTreatment fidelity in a pragmatic clinical trial of music therapy for premature infants and their parents: the LongSTEP study– Trials 2023
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Academic articleA natural Hessian approximation for ensemble based optimization– Computational Geosciences 2023
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Academic articleShort-term Music Therapy for Families With Preterm Infants: A Randomized Trial– Pediatrics 2022
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Conference lectureShort-term Music Therapy for Premature Infants and their Parents: Results from international randomized trial LongSTEP– 4th Congress of joint European Neonatal Societies 2021
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Academic articleReducing systematic errors due to deformation of organs at risk in radiotherapy– Medical Physics (Lancaster) 2021
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Academic articlep-Kernel Stein Variational Gradient Descent for Data Assimilation and History Matching– Mathematical Geosciences 2021
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Academic articleAssessment of multilevel ensemble-based data assimilation for reservoir history matching– Computational Geosciences 2020
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Conference lectureRevising the Method of Ensemble Randomized Maximum Likelihood– Petroleum Geostatistics 2019 2019
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Conference lectureStein Variational Gradient Descent with Application to Data Assimilation– Petroleum Geostatistics 2019
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Academic articleEfficient Implementation of an Iterative Ensemble Smoother for Data Assimilation and Reservoir History Matching– Frontiers in Applied Mathematics and Statistics 2019
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Academic articleRevising the stochastic iterative ensemble smoother– Nonlinear processes in geophysics 2019
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Academic chapterPractical Use of the Ensemble-Based Conjugate Gradient Method for Production Optimization in the Brugge Benchmark Study– 2018
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Academic chapterA Novel Ensemble-Based Conjugate Gradient Method for Reservoir Management– 2018
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Academic literature reviewAn adaptive pluri-Gaussian simulation model for geological uncertainty quantification– Journal of Petroleum Science and Engineering 2017
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Conference lectureMulti-level ensemble based data assimilation– 12th international EnKF workshop 2017
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Conference lectureEnsemble-based Methods for Production Optimization– SIAM Geosciences 2017 (SIAM GS17) 2017
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Conference lectureGeneric approaches to reducing data-assimilation Monte-Carlo error for subsurface applications– SIAM Conference on Mathematical and Computational Issues in the Geosciences 2017
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Academic articleLarge sample properties of the adaptive gaussian mixture filter– Monthly Weather Review 2017
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Academic articleA modified randomized maximum likelihood for improved Bayesian history matching– Computational Geosciences 2017
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Academic articleImproving physically based snow simulations by assimilating snow depths using the particle filter– Water Resources Research 2017
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Academic articleAn auxiliary adaptive Gaussian mixture filter applied to flowrate allocation using real data from a multiphase producer– Computers & Geosciences 2017
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Academic chapterDifferent Parameterizations of the Initial Ensemble for a Channelized Reservoir in an Assisted History matching Context– 2016
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Academic chapterEnsemble Based Optimization Using Importance Sampling and Gaussian Mixtures– 2016
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Conference lectureAn Auxiliary Adaptive Gaussian Mixture Filter Applied to Flowrate Allocation Using Real Data from a Multiphase Producer– ECMOR XV 2016
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Academic chapterAn Auxiliary Adaptive Gaussian Mixture Filter Applied to Flowrate Allocation Using Real Data from a Multiphase Producer– 2016
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Conference lectureDifferent parameterizations of the initial ensemble for a channelized reservoir in an Assisted History Matching context– 11th EnKF Workshop 2016
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Conference lectureGradient free production optimization under geological uncertainty– PMPM and UK InterPore Joint Annual Meeting 2016 2016
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Academic articleIntegrated Workflow of Preserving Facies Realism in History Matching: Application to the Brugge Field– SPE Journal 2016
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Academic articleEstimation of production rates using transient well flow modeling and the auxiliary particle filter – full-scale applications– SPE Production & Operations 2016
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Conference lectureparticle Filters and Gaussian Mixture Filters– 4th Summer School on Data assimilation and its Application in Engineering 2015
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Academic articleComplex geology estimation using the iterative adaptive Gaussian mixture filter– Computational Geosciences 2015
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Conference lectureGeneralized Randomized Maximum Likelihood– ISAPP symposium TU Delft 2015
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Academic articleIterative ensemble smoothers in the annealed importance sampling framework– Advances in Water Resources 2015
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Conference lecturePreserving Geological Realism for Channelized Facies Estimation on the Brugge Field– 10th International EnKF Workshop 2015
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Conference lecturePreserving Geological Realism of Channelized Facies in Complex Reservoir– SIAM Conference on Mathematical and Computational Issues in the Geosciences 2015
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Conference lectureEnsemble Smoothers in the Annealed Importance Sampling Framework– SIAM conference on Mathematical and Computational issues in the Geosciences 2015
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Conference lecture(Towards a) Generalized Randomized Maximum Likelihood– SIAM Conference on Mathematical and Computational Issues in the Geosciences 2015
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Academic articleA theoretical look at ensemble-based optimization in reservoir management– Mathematical Geosciences 2015
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Academic articleBridging multipoint statistics and truncated Gaussian fields for improved estimation of channelized reservoirs with ensemble methods– Computational Geosciences 2015
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Academic articleIterative Ensemble Smoother as an Approximate Solution to a Regularized Minimum-Average-Cost Problem: Theory and Applications– SPE Journal 2015
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Conference lectureFacies Parameterization and Estimation for Complex Reservoirs - The Brugge Field– SPE Bergen One Day Seminar 2015 2015
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Academic articleIterative Bayesian inversion with Gaussian mixtures: finite sample implementation and large sample asymptotics– Computational Geosciences 2015
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Research reportBridging multipoint statistics and truncated Gaussian fields for improved estimation of channelized reservoirs with ensemble methods– International Research Institute of Stavanger 2014
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Conference lecturePreserving Channelized Facies on Brugge Field– Workshop on Reservoir Data Assimilation for Realistic Geology 2014
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Academic chapterOn an Alternative Implementation of the Iterative Ensemble Smoother and its Application to Reservoir Facies Estimation– 2014
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Academic chapterToward an Enhanced Bayesian Estimation Framework for Multiphase Flow Soft-sensing– 2014
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Conference lectureGaussian Mixtures in data assimilation problems– Computational Methods in Water Resources XX. International Conference (CMWR 14) 2014
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Conference lectureAsymptotic properties of a broad class of mixture filters– 9th International EnKF Workshop 2014
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Research reportOn an Alternative Implementation of the Iterative Ensemble Smoother and its Application to Reservoir Facies Estimation– IRIS 2014
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Research reportEnsemble Smoothers in the Annealed Importance Sampling Framework– IRIS 2014
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Research reportIterative Bayesian Inversion with Gaussian Mixtures: Finite Sample Implementation and Large Sample Asymptotics– IRIS 2014
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Research reportLarge sample properties of the Adaptive Gaussian Mixture Filter– IRIS 2014
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Academic chapterComplex Geology Estimation Using the Iterative Adaptive Gaussian Mixture (IAGM)– 2014
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Conference lectureOn an iterative ensemble smoother and its application to a reservoir facies estimation problem– 14th European Conference on Mathematics of Oil Recovery (ECMOR XIV) 2014
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Conference lectureOn an iterative ensemble smoother and its application to a reservoir facies estimation problem– European Geosciences Union (EGU) General Assembly 2014 2014
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Academic chapterRobust Ensemble-based Multi-objective Optimization– 2014
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Academic chapterA Closer Look at Ensemble-based Optimization in Reservoir Management– 2014
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Conference lectureEnsemble based methods for estimation and optimization– Workshop in Applied Mathematical Modeling, Optimization & Uncertainty Quantification", 2014
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Academic articleToward an enhanced Bayesian estimation framework for multiphase flow soft-sensing– Inverse Problems 2014
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Conference lectureToward an Enhanced Bayesian Estimation Framework for Multiphase Flow Soft-sensing– 14th European Conference on Mathematics of Oil Recovery (ECMOR XIV) 2014
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Conference lectureOn an Alternative Implementation of the Iterative Ensemble Smoother and its Application to Reservoir Facies Estimation– 14th European Conference on Mathematics of Oil Recovery (ECMOR XIV) 2014
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Conference lectureComplex Geology Estimation Using the Iterative Adaptive Gaussian Mixture (IAGM)– 14th European Conference on Mathematics of Oil Recovery (ECMOR XIV) 2014
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Conference lectureA Closer Look at Ensemble-based Optimization in Reservoir Management– 14th European Conference on Mathematics of Oil Recovery (ECMOR XIV) 2014
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Conference lectureRobust Ensemble-based Multi-objective Optimization– 14th European Conference on Mathematics of Oil Recovery (ECMOR XIV) 2014
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Academic articleAn iterative version of the adaptive Gaussian mixture filter– Computational Geosciences 2014
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Academic articleEstimation of production rates with transient well-flow modeling and the auxiliary particle filter– SPE Journal 2014
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Conference lectureGaussian mutation for optimization and efficient importance sampling– 8th International EnKF Workshop 2013
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Academic articleFiltering with state space localized Kalman gain– Physica D : Non-linear phenomena 2012
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Academic articleComparing the adaptive Gaussian mixture filter with the ensemble Kalman filter on synthetic reservoir models– Computational Geosciences 2012
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Conference lectureRefined Adaptive Gaussian Mixture Filter - Application on a Real Field Case– SPE 154479, EAGE Annual Conference & Exhibition incorporating SPE Europec 2012
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Conference lectureApplication of the Adaptive Gaussian Mixture Filter to History Match a Real Field Case– ECMOR XIII – 13th European Conference on the Mathematics of Oil Recovery 2012
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Conference lectureIterative versions of the adaptive Gaussian mixture filter– ECMOR XIII – 13th European Conference on the Mathematics of Oil Recovery 2012
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Conference lectureHistory matching of channelized reservoirs using ensemble based methods– Steering Comitee Workshop 2012
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Conference lectureAn alternative implementation of the iterative ensemble smoother and some numerical results– Steering Comitee Workshop 2012
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Academic articleEvaluation of EnKF and variants on the PUNQ-S3 case– Oil & gas science and technology 2012
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Academic articleCharacterization of permeability and porosity from nanosensor observations– Advances in Water Resources 2011
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Academic articleBridging the ensemble Kalman filter and particle filters: the adaptive Gaussian mixture filter– Computational Geosciences 2011
