Andreas Størksen Stordal

Researcher
Phone: +47 51 87 56 36
Email: asto@norceresearch.no
Office Address: Prof. Olav Hanssensvei 15, 4021 Stavanger, Norway

Projects

Project

DIGIRES

Project

FEEDBACK: Advancing permafrost carbon climate feedback – improvements and evaluations of the Norwegian Earth System Model with observations

Publications

Assessment of multilevel ensemble-based data assimilation for reservoir history matching
Computational Geosciences 2020
Efficient Implementation of an Iterative Ensemble Smoother for Data Assimilation and Reservoir History Matching
Frontiers in Applied Mathematics and Statistics 2019
Revising the stochastic iterative ensemble smoother
Nonlinear processes in geophysics 2019
Practical Use of the Ensemble-Based Conjugate Gradient Method for Production Optimization in the Brugge Benchmark Study
2018
A Novel Ensemble-Based Conjugate Gradient Method for Reservoir Management
2018
An adaptive pluri-Gaussian simulation model for geological uncertainty quantification
Journal of Petroleum Science and Engineering 2017
Large sample properties of the adaptive gaussian mixture filter
Monthly Weather Review 2017
A modified randomized maximum likelihood for improved Bayesian history matching
Computational Geosciences 2017
Improving physically based snow simulations by assimilating snow depths using the particle filter
Water Resources Research 2017
An auxiliary adaptive Gaussian mixture filter applied to flowrate allocation using real data from a multiphase producer
Computers & Geosciences 2017
Different Parameterizations of the Initial Ensemble for a Channelized Reservoir in an Assisted History matching Context
2016
Ensemble Based Optimization Using Importance Sampling and Gaussian Mixtures
2016
An Auxiliary Adaptive Gaussian Mixture Filter Applied to Flowrate Allocation Using Real Data from a Multiphase Producer
2016
Integrated Workflow of Preserving Facies Realism in History Matching: Application to the Brugge Field
SPE Journal 2016
Estimation of production rates using transient well flow modeling and the auxiliary particle filter – full-scale applications
SPE Production & Operations 2016
Complex geology estimation using the iterative adaptive Gaussian mixture filter
Computational Geosciences 2015
Iterative ensemble smoothers in the annealed importance sampling framework
Advances in Water Resources 2015
A theoretical look at ensemble-based optimization in reservoir management
Mathematical Geosciences 2015
Bridging multipoint statistics and truncated Gaussian fields for improved estimation of channelized reservoirs with ensemble methods
Computational Geosciences 2015
Iterative Ensemble Smoother as an Approximate Solution to a Regularized Minimum-Average-Cost Problem: Theory and Applications
SPE Journal 2015
Iterative Bayesian inversion with Gaussian mixtures: finite sample implementation and large sample asymptotics
Computational Geosciences 2015
Bridging multipoint statistics and truncated Gaussian fields for improved estimation of channelized reservoirs with ensemble methods
2014
On an Alternative Implementation of the Iterative Ensemble Smoother and its Application to Reservoir Facies Estimation
2014
Toward an Enhanced Bayesian Estimation Framework for Multiphase Flow Soft-sensing
2014
On an Alternative Implementation of the Iterative Ensemble Smoother and its Application to Reservoir Facies Estimation
2014
Ensemble Smoothers in the Annealed Importance Sampling Framework
2014
Iterative Bayesian Inversion with Gaussian Mixtures: Finite Sample Implementation and Large Sample Asymptotics
2014
Large sample properties of the Adaptive Gaussian Mixture Filter
2014
Complex Geology Estimation Using the Iterative Adaptive Gaussian Mixture (IAGM)
2014
Robust Ensemble-based Multi-objective Optimization
2014
A Closer Look at Ensemble-based Optimization in Reservoir Management
2014
Toward an enhanced Bayesian estimation framework for multiphase flow soft-sensing
Inverse Problems 2014
An iterative version of the adaptive Gaussian mixture filter
Computational Geosciences 2014
Estimation of production rates with transient well-flow modeling and the auxiliary particle filter
SPE Journal 2014
Filtering with state space localized Kalman gain
Physica D : Non-linear phenomena 2012
Comparing the adaptive Gaussian mixture filter with the ensemble Kalman filter on synthetic reservoir models
Computational Geosciences 2012
Evaluation of EnKF and variants on the PUNQ-S3 case
Oil & gas science and technology 2012
Characterization of permeability and porosity from nanosensor observations
Advances in Water Resources 2011
Bridging the ensemble Kalman filter and particle filters: the adaptive Gaussian mixture filter
Computational Geosciences 2011