Johan Olav Helland
Forsker i matematisk modellering
Institutt for energi- og petroleumsteknologi
Forsker i matematisk modellering
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2024)
Ostwald ripening of gas bubbles in porous media: Impact of pore geometry and spatial bubble distribution.Advances in Water Resources.
ISSN 0309-1708.
Volum 187.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2023)
Pore-scale Ostwald ripening of gas bubbles in the presence of oil and water in porous media.Journal of Colloid and Interface Science.
ISSN 0021-9797.
Volum 647.
s.331-343.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2023)
Adaptive mesh refinement in locally conservative level set methods for multiphase fluid displacements in porous media.Computational Geosciences.
ISSN 1420-0597.
Helland, Johan Olav; Friis, Helmer André; Assadi, Mohsen; Klimkowski, Lukasz; Nagy, Stanislaw
(2023)
Prediction of Optimal Production Time during Underground CH4 Storage with Cushion CO2 Using Reservoir Simulations and Artificial Neural Networks.Energy & Fuels.
ISSN 0887-0624.
Volum 37.
Hefte 23.
s.19022-19038.
Helland, Johan Olav; Friis, Helmer André; Assadi, Mohsen; Nagy, Stanislaw
(2023)
Machine learning for underground gas storage with cushion CO2 using data from reservoir simulation.IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Pettersson, Per; Aursjø, Olav; Helland, Johan Olav; Jettestuen, Espen
(2023)
Constrained optimization of offshore wind turbine positions under uncertain wind conditions with correlated data.Journal of Physics: Conference Series (JPCS).
ISSN 1742-6588.
Volum 2626.
Hefte 1.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2022)
A level set approach to Ostwald ripening of trapped gas bubbles in porous media.Transport in Porous Media.
ISSN 0169-3913.
Volum 145.
Hefte 2.
s.441-474.
Jettestuen, Espen; Friis, Helmer Andre`; Helland, Johan Olav
(2021)
A locally conservative multiphase level set method for capillary-controlled displacements in porous media.Journal of Computational Physics.
ISSN 0021-9991.
Volum 428.
Zhou, Yingfang; Hatzignatiou, Dimitrios Georgios; Helland, Johan Olav; Yulong, Zhao; Cai, Jianchao
(2021)
Pore-scale modelling of three-phase capillary pressure curves directly in uniformly wet rock images.Geofluids.
ISSN 1468-8115.
Volum 2021.
DOI: 10.1155/2021/6622079
Paustian, Rebecca Lynn; Andersson, Linnea; Helland, Johan Olav; Wildenschild, Dorthe
(2021)
On the relationship between capillary pressure, saturation, and interfacial area for three-phase flow in water-wet porous media.Advances in Water Resources.
ISSN 0309-1708.
Volum 151.
Helland, Johan Olav; Jettestuen, Espen; Friis, Helmer Andre`
(2021)
A Discrete-Domain Approach to Three-Phase Hysteresis in Porous Media.Water Resources Research.
ISSN 0043-1397.
Volum 57.
Hefte 6.
DOI: 10.1029/2021WR029560
Friis, Helmer Andre`; Pedersen, Janne; Jettestuen, Espen; Helland, Johan Olav; Prodanovic, Masa
(2019)
Pore-Scale Level Set Simulations of Capillary-Controlled Displacement with Adaptive Mesh Refinement.Transport in Porous Media.
ISSN 0169-3913.
Volum 128.
Hefte 1.
s.123-151.
Helland, Johan Olav; Pedersen, Janne; Friis, Helmer Andre`; Jettestuen, Espen
(2019)
A multiphase level set approach to motion of disconnected fluid ganglia during capillary-dominated three-phase flow in porous media: Numerical validation and applications.Chemical Engineering Science (CES).
ISSN 0009-2509.
Volum 203.
s.138-162.
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios; Ahsan, Rajib; Hiorth, Aksel
(2017)
Experimental validation of a pore-scale-derived dimensionless capillary pressure function for imbibition under mixed-wet conditions.SPE Journal.
ISSN 1086-055X.
Volum 22.
Hefte 5.
s.1338-1348.
DOI: 10.2118/180088-PA
Zhou, Yingfang; Hatzignatiou, Dimitrios Georgios; Helland, Johan Olav
(2017)
On the estimation of CO2 capillary entry pressure: Implications on geological CO2 storage.International Journal of Greenhouse Gas Control.
ISSN 1750-5836.
Volum 63.
s.26-36.
Helland, Johan Olav; Friis, Helmer Andre`; Pedersen, Janne; Jettestuen, Espen
(2017)
Pore-scale simulation of three-phase capillary pressure and trapping on 3D rock images. I: 19th European Symposium on Improved Oil Recovery/IOR Norway 2017.
European Association of Geoscientists and Engineers (EAGE).
ISBN 978-94-6282-209-2.
Helland, Johan Olav; Friis, Helmer Andre`; Jettestuen, Espen; Skjæveland, Svein Magne
(2017)
Footprints of spontaneous fluid redistribution on capillary pressure in porous rock.Geophysical Research Letters.
ISSN 0094-8276.
Volum 44.
Hefte 10.
s.4933-4943.
DOI: 10.1002/2017GL073442
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2016)
Computation of three-phase capillary pressure curves and fluid configurations at mixed-wet conditions in 2D rock images.SPE Journal.
ISSN 1086-055X.
Volum 21.
Hefte 1.
s.152-169.
DOI: 10.2118/170883-PA
Helland, Johan Olav; Jettestuen, Espen
(2016)
Mechanisms for trapping and mobilization of residual fluids during capillary-dominated three-phase flow in porous rock.Water Resources Research.
ISSN 0043-1397.
Volum 52.
Hefte 7.
s.5376-5392.
DOI: 10.1002/2016WR018912
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2014)
Pore-Scale Modeling of Waterflooding in Mixed-Wet-Rock Images: Effects of Initial Saturation and Wettability.SPE Journal.
ISSN 1086-055X.
Volum 19.
Hefte 1.
s.88-100.
DOI: 10.2118/154284-PA
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2014)
Computation of three-phase capillary entry pressures and arc menisci configurations in pore geometries from 2D rock images: A combinatorial approach.Advances in Water Resources.
ISSN 0309-1708.
Volum 69.
s.49-64.
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2014)
On the Dependence og Capillary Entry Pressure with Subsurface Depth in Geological CO2 Storage. I: Fourth EAGE CO2 Geological Storage Workshop. Demonstrating storage integrity and building confidence in CCS. 22.- 24. april 2014, Stavanger, Norway.European Association of Geoscientists and Engineers (EAGE).
ISBN 978-90-73834-79-8.
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2013)
A Dimensionless Capillary Pressure Function for Imbibition Derived From Pore-Scale Modeling in Mixed-Wet-Rock Images.SPE Journal.
ISSN 1086-055X.
Volum 18.
Hefte 2.
s.296-308.
DOI: 10.2118/154129-PA
Jettestuen, Espen; Helland, Johan Olav; Prodanovi'c, Maisa
(2013)
A level set method for simulating capillary-controlled displacements at the pore scale with nonzero contact angle.Water Resources Research.
ISSN 0043-1397.
Volum 49.
Hefte 8.
s.4645-4661.
DOI: 10.1002/wrcr.20334
Zhou, Yingfang; Helland, Johan Olav; Jettestuen, Espen
(2013)
Dynamic capillary pressure curves from pore-scale modeling in mixed-wet-rock images.SPE Journal.
ISSN 1086-055X.
Volum 18.
Hefte 4.
s.634-645.
DOI: 10.2118/154474-pa
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2012)
A Dimensionless Capillary Pressure Function for Imbibition Derived from Pore-Scale Modelling in Mixed-Wet Rock Images. I: SPE Improved Oil Recovery Symposium, 14-18 April 2012, Tulsa, Oklahoma, USA.Society of Petroleum Engineers.
ISBN 978-1-61399-197-8.
DOI: 10.2118/154129-m
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2012)
Pore-Scale Modelling of Water Flooding in Mixed-Wet Rock Images: Effects of Initial Saturation and Wettability. I: SPE Improved Oil Recovery Symposium, 14-18 April 2012, Tulsa, Oklahoma, USA.Society of Petroleum Engineers.
ISBN 978-1-61399-197-8.
DOI: 10.2118/154284-m
Zhou, Yingfang; Helland, Johan Olav
(2012)
Dynamic Capillary Pressure Curves from Pore-Scale Modelling in Mixed-Wet Rock Images. I: SPE Europec/EAGE Annual Conference, 4-7 June 2012, Copenhagen, Denmark.Society of Petroleum Engineers.
ISBN 978-1-61399-204-3.
DOI: 10.2118/154474-m
Frette, Olav Inge; Helland, Johan Olav
(2010)
A semi-analytical model for computation of capillary entry pressures and fluid configurations in uniformly-wet pore spaces from 2D rock images.Advances in Water Resources.
ISSN 0309-1708.
Volum 33.
Hefte 8.
s.846-866.
Jettestuen, Espen; Aursjø, Olav; Helland, Johan Olav; Vinningland, Jan Ludvig; Hiorth, Aksel
(2024)
Workflow for direct pore-scale simulation of relative permeability and capillary pressure curves with hysteresis at low capillary numbers.
SPE Norway Subsurface Conference;
2024-04-17.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2023)
Pore-scale Ostwald ripening of residually trapped CO2 in the presence of oil and water at immiscible and near-miscible conditions.
Interpore 2023;
2023-05-22 - 2023-05-25.
Pettersson, Per; Aursjø, Olav; Helland, Johan Olav; Jettestuen, Espen
(2023)
Optimization of offshore wind turbine positioning within bounded areas under uncertain wind conditions.
EERA Deepwind 2023;
2023-01-18 - 2023-01-20.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2023)
Ostwald ripening: Bubble distribution evolution in porous media.
SIAM 2023 - Conference on Mathematical & Computational issues in the Geosciences;
2023-06-19 - 2023-06-22.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2023)
Ostwald ripening of trapped gas in the presence of oil and water in subsurface storage.
The CSSR conference;
2023-09-12 - 2023-09-13.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2023)
Ostwald ripening of trapped gas in the presence of oil and water in subsurface storage.
InterPore Norway 2023;
2023-11-09.
Helland, Johan Olav; Friis, Helmer Adre; Assadi, Mohsen; Nagy, Stanislaw
(2023)
Machine learning for underground gas storage with cushion CO2 using data from reservoir simulation.
Computational Methods and Ocean Technology, COTech 2023;
2023-11-30 - 2023-12-01.
Barbacki, Jan; Klimkowski, Lokasz; Helland, Johan Olav; Assadi, Mohsen; Wisniowski, Rafal; Nagy, Stanislaw
(2023)
Advanced Gas and Carbon Dioxide Storage in the Aquifer - A Machine Learning Approach.
24th World Petroleum Congress;
2023-09-17 - 2023-09-21.
Jettestuen, Espen; Singh, Deepak; Friis, Helmer André; Helland, Johan Olav
(2023)
Ostwald ripening of trapped gas in the presence of oil and water in subsurface storage.
InterPore Norway 2023;
2023-11-09.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2022)
A pore-scale level-set approach to Ostwald ripening of gas bubbles in porous media in the presence of residual oil and water.
Interpore 2022;
2022-05-30 - 2022-06-02.
Singh, Deepak; Friis, Helmer André; Jettestuen, Espen; Helland, Johan Olav
(2022)
A level set approach to Ostwald ripening of real gases in porous media.
CSSR Kick-Off Science Day;
2022-09-08.
Singh, Deepak; Friis, Helmer Andre`; Jettestuen, Espen; Helland, Johan Olav
(2021)
A level set approach to Ostwald ripening of real gases in porous media.
InterPore2021 - 13th International Conference on Porous Media;
2021-05-31 - 2021-06-04.
Piñerez Torrijos, Iván Darío; Strand, Skule; Puntervold, Tina; Hiorth, Aksel; Zamani, Nematollah; Helland, Johan Olav; Vinningland, Jan Ludvig
(2020)
Integrated SCAL solutions for improved oil recovery.
Technical committee meeting;
2020-04-23.
Helland, Johan Olav; Jettestuen, Espen; Friis, Helmer Andre`
(2019)
Simulation of Capillary Trapping in Three-phase Displacement using a Level Set Approach with Local Volume Preservation .
SIAM Conference on Mathematical & Computational Issues in the Geosciences (GS19);
2019-03-11 - 2019-03-14.
Helland, Johan Olav; Jettestuen, Espen; Friis, Helmer Andre`
(2019)
Simulation of Capillary Trapping in Three-Phase Displacement Using a Locally Conservative Level Set Approach.
Workshop i anledning IOR Norway 2019 ;
2019-03-18.
Helland, Johan Olav; Friis, Helmer Andre`; Jettestuen, Espen; Paustian, Rebecca Lynn; Wildenschild, Dorthe
(2019)
Simulation of capillary-dominated three-phase flow experiments on 3-D bead packs.
Interpore 2019;
2019-05-06 - 2019-05-10.
Helland, Johan Olav
(2019)
Three-phase capillary trapping in porous media.
3rd National Workshop on Porous Media;
2019-10-16.
Helland, Johan Olav; Friis, Helmer Andre`; Jettestuen, Espen
(2019)
CO2 storage in the presence of residual oil.
Bergen CCUS Seminar;
2019-12-03 - 2019-12-04.
Helland, Johan Olav
(2018)
Three-phase Capillary Pressure, Hysteresis and Trapping in Mixed-Wet Rock.
COREC Seminar 2018;
2018-12-10 - 2018-12-11.
Helland, Johan Olav
(2018)
Three-phase capillary pressure, hysteresis and trapping in mixed-wet rock drainage.
COREC seminar 2018;
2018-12-10 - 2018-12-11.
Helland, Johan Olav; Friis, Helmer Andre`; Pedersen, Janne; Jettestuen, Espen
(2017)
Pore-scale simulation of three-phase gas and water invasion processes on 3D rock images.
9th International Conference on Porous Media & Annual Meeting 2017 (Interpore 9);
2017-05-08 - 2017-05-12.
Helland, Johan Olav; Friis, Helmer Andre`; Pedersen, Janne; Jettestuen, Espen
(2017)
Pore-scale simulation of three-phase capillary pressure and trapping on 3D rock images.
IOR NORWAY 2017 - 19th European Symposium on Improved Oil Recovery;
2017-04-24 - 2017-04-27.
Helland, Johan Olav
(2017)
Three-phase capillary pressure, hysteresis and trapping in mixed-wet rock.
COREC seminar 2017;
2017-12-11 - 2017-12-12.
Helland, Johan Olav; Jettestuen, Espen
(2016)
Level set approach for multiphase motion with isolated ganglia on the pore scale.
8th International Conference on Porous Media and Annual Meeting (Interpore 8);
2016-05-09 - 2016-05-12.
Helland, Johan Olav; Jettestuen, Espen
(2016)
Level set approach for multiphase motion with isolated ganglia on the pore scale.
8th International Conference on Porous Media and Annual Meeting (Interpore 8);
2016-05-09 - 2016-05-12.
Andersson, Linnea; Li, Tianyi; Helland, Johan Olav; Wildenschild, Dorthe
(2016)
On the effect of wettability, hysteresis, and spreading films on three-phase fluid flow in porous media.
8th International Conference on Porous Media and Annual Meeting (Interpore 8);
2016-05-09 - 2016-05-12.
Pedersen, Janne; Friis, Helmer Andre`; Jettestuen, Espen; Helland, Johan Olav
(2016)
Level-set simulation of capillary-controlled displacement on the pore scale with mixed wettability.
8th International Conference on Porous Media and Annual Meeting (Interpore 8);
2016-05-09 - 2016-05-12.
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios; Ahsan, Rajib; Hiorth, Aksel
(2016)
Experimental validation of a pore-scale derived dimensionless capillary pressure function for imbibition under mixed-wet conditions.
78th EAGE Conference & Exhibition including SPE EUROPEC;
2016-05-30 - 2016-06-02.
Helland, Johan Olav; Jettestuen, Espen
(2015)
Three-phase fluid displacements on the pore scale: method and mechanisms.
IOR NORWAY 2015;
2015-04-28 - 2015-04-29.
Helland, Johan Olav; Jettestuen, Espen
(2015)
Modelling of snap-off mechanisms during three-phase flow in porous media.
7th International Conference on Porous Media & Annual Meeting of the International Society of Porous Media;
2015-05-18 - 2015-05-21.
Helland, Johan Olav
(2015)
Three-phase capillary pressure, hysteresis and trapping in mixed-wet rock.
COREC Seminar;
2015-11-30 - 2015-12-02.
Andersson, Linnea; Schlüter, Steffen; Li, Tianyi; Brown, Kendra; Helland, Johan Olav; Wildenschild, Dorthe
(2015)
Three-Phase Capillary Pressure, Hysteresis and Trapping in a Porous Glass-Bead Column.
AGU Fall Meeting;
2015-12-14 - 2015-12-18.
Helland, Johan Olav; Jettestuen, Espen
(2014)
NUMERICAL SIMULATION OF CAPILLARY-CONTROLLED THREE-PHASE DISPLACEMENTS ON 3D ROCK IMAGES.
International Symposium of the Society of Core Analysts;
2014-09-08 - 2014-09-11.
Helland, Johan Olav; Jettestuen, Espen
(2014)
Variational level set method for volume-preserving motion of a disconnected oil phase during three-phase flow in porous media.
6th International Conference on Porous Media & Annual Interpore Meeting;
2014-05-27 - 2014-05-30.
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2014)
SPE 170883: Computation of three-phase capillary pressure curves and fluid configurations at mixed-wet conditions in 2D rock images.
SPE Annual Technical Conference and Exhibition;
2014-10-27 - 2014-10-29.
Helland, Johan Olav
(2014)
Pore-Scale Modelling.
Corec Seminar;
2014-06-10 - 2014-06-11.
Helland, Johan Olav; Jettestuen, Espen
(2014)
Simulation of capillary-controlled three-phase displacements in realistic pore geometries.
IOR-OPM Workshop;
2014-12-11.
Helland, Johan Olav; Jettestuen, Espen
(2013)
Computation of three-phase fluid configurations at the pore scale by a variational level set method.
SIAM Geosciences 2013;
2013-06-17 - 2013-06-20.
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2013)
Simulation of Three‑Phase Capillary Pressure Curves Directly in 2D Rock Images.
The International Petroleum Technology Conference;
2013-03-26 - 2013-03-28.
Helland, Johan Olav; Jettestuen, Espen
(2012)
A three-dimensional variational level set method for simulating multiphase displacements at the pore scale.
AGU Fall Meeting 2012;
2012-12-03 - 2012-12-07.
Jettestuen, Espen; Helland, Johan Olav; Prodanovi'c, Maisa
(2012)
A variational level set method for simulation of capillary-controlled displacements.
XIX International Conference on Computational Methods in Water Resources;
2012-06-17 - 2012-06-22.
Zhou, Yingfang; Helland, Johan Olav
(2012)
Semi‐analytical computation of three‐phase capillary entry pressures and arc menisci configurations in 2D rock images.
XIX International Conference on Computational Methods in Water Resources (CMWR 2012);
2012-06-17 - 2012-06-22.
Helland, Johan Olav; Jettestuen, Espen; Hatzignatiou, Dimitrios Georgios; Silin, Dmitriy
(2011)
Three-dimensional level set modelling of capillary-controlled displacements in digital porous media.
2011 AGU Fall Meeting, American Geophysical Union;
2011-12-05 - 2011-12-09.
Zhou, Yingfang; Helland, Johan Olav; Hatzignatiou, Dimitrios Georgios
(2011)
A Model for Imbibition in Pore Spaces from 2D Rock Images.
Flows and mechanics in natural porous media;
2011-11-16 - 2011-11-18.