• CO2 mobility reduction using foam stabilized by CO2- and water-soluble surfactants 

      Føyen, Tore Lyngås; Alcorn, Zachary Paul; Fernø, Martin; Barrabino, Albert; Holt, Torleif (Journal article; Peer reviewed, 2021)
      Foam can reduce CO2 mobility to improve the sweep efficiency during injection into subsurface geological formations for CO2 storage and enhanced oil recovery. However, CO2 foams are thermodynamically unstable, so they must ...
    • Combined positron emission tomography and computed tomography to visualize and quantify fluid flow in sedimentary rocks 

      Fernø, Martin; Gauteplass, Jarand; Hauge, Lars Petter; Abell, Geir Espen; Adamsen, Tom Christian; Graue, Arne (Peer reviewed; Journal article, 2015-09-22)
      Here we show for the first time the combined positron emission tomography (PET) and computed tomography (CT) imaging of flow processes within porous rocks to quantify the development in local fluid saturations. The coupling ...
    • Comparison of residual oil cluster size distribution, morphology and saturation in oil-wet and water-wet sandstone 

      Iglauer, Stefan; Fernø, Martin; Shearing, Paul; Blunt, Martin (Peer reviewed; Journal article, 2012-06-01)
      We imaged an oil-wet sandstone at residual oil saturation (Sor) conditions using X-ray micro-tomography with a nominal voxel size of (9 μm)3 and monochromatic light from a synchrotron source. The sandstone was rendered ...
    • Core-scale sensitivity study of CO2 foam injection strategies for mobility control, enhanced oil recovery, and CO2 storage 

      Alcorn, Zachary Paul; Fredriksen, Sunniva; Sharma, Mohan; Føyen, Tore Lyngås; Wergeland, Connie; Fernø, Martin; Graue, Arne; Ersland, Geir (Journal article; Peer reviewed, 2020)
      This paper presents experimental and numerical sensitivity studies to assist injection strategy design for an ongoing CO2 foam field pilot. The aim is to increase the success of in-situ CO2 foam generation and propagation ...
    • DarSIA: An Open-Source Python Toolbox for Two-Scale Image Processing of Dynamics in Porous Media 

      Nordbotten, Jan Martin; Benali, Benyamine; Both, Jakub Wiktor; Brattekås, Bergit; Storvik, Erlend; Fernø, Martin (Journal article; Peer reviewed, 2023)
      Understanding porous media flow is inherently a multi-scale challenge, where at the core lies the aggregation of pore-level processes to a continuum, or Darcy-scale, description. This challenge is directly mirrored in image ...
    • Dos and Don’ts When Developing a System to Investigate Spontaneous Imbibition in Unconsolicdated Porous Media 

      Brattekås, Bergit; Føyen, Tore Lyngås; Vabø, Trond; Haugland, Håkon; Reite, Simon I.; Saunes, Anders S.; Fernø, Martin (Peer reviewed; Journal article, 2019)
      This paper describes the development of a consistent model system to measure spontaneous imbibition and determine saturation functions in unconsolidated porous media. Sand grains or glass beads were packed in up to 0.5 m ...
    • Flow visualization of CO2 in tight shale formations at reservoir conditions 

      Fernø, Martin; Hauge, Lars Petter; Rognmo, Arthur Uno; Gauteplass, Jarand; Graue, Arne (Peer reviewed; Journal article, 2015-09-18)
      The flow of CO2 in porous media is fundamental to many engineering applications and geophysical processes. Yet detailed CO2 flow visualization remains challenging. We address this problem via positron emission tomography ...
    • The FluidFlower Validation Benchmark Study for the Storage of CO2 

      Flemisch, Bernd; Nordbotten, Jan Martin; Fernø, Martin; Juanes, Ruben; Both, Jakub Wiktor; Class, Holger; Delshad, Mojdeh; Doster, Florian; Ennis-King, Jonathan; Franc, Jacques; Geiger, Sebastian; Gläser, Dennis; Green, Christopher; Gunning, James; Hajibeygi, Hadi; Jackson, Samuel J.; Jammoul, Mohamad; Karra, Satish; Li, Jiawei; Matthäi, Stephan K.; Miller, Terry; Shao, Qi; Spurin, Catherine; Stauffer, Philip; Tchelepi, Hamdi; Tian, Xiaoming; Viswanathan, Hari; Voskov, Denis; Wang, Yuhang; Wapperom, Michiel; Wheeler, Mary F.; Wilkins, Andrew; Youssef, AbdAllah A.; Zhang, Ziliang (Journal article; Peer reviewed, 2023)
      Successful deployment of geological carbon storage (GCS) requires an extensive use of reservoir simulators for screening, ranking and optimization of storage sites. However, the time scales of GCS are such that no sufficient ...
    • Hydrogen Relative Permeability Hysteresis in Underground Storage 

      Lysyy, Maksim; Fernø, Martin; Ersland, Geir (Journal article; Peer reviewed, 2022)
      Implementation of the hydrogen economy for emission reduction will require storage facilities, and underground hydrogen storage (UHS) in porous media offers a readily available large-scale option. Lack of studies on ...
    • Increased CO2 storage capacity using CO2-foam 

      Føyen, Tore Lyngås; Brattekås, Bergit; Fernø, Martin; Barrabino, Albert; Holt, Torleif (Journal article; Peer reviewed, 2020)
      Reduction of the CO2 mobility is beneficial during subsurface sequestration of anthropogenic CO2 in saline aquifers and hydrocarbon reservoirs by mitigating flow instabilities leading to early gas breakthrough and poor ...
    • Measurements of CH4 and CO2 relative permeability in hydrate-bearing sandstone 

      Almenningen, Stian; Gauteplass, Jarand; Hauge, Lars Petter; Barth, Tanja; Fernø, Martin; Ersland, Geir (Peer reviewed; Journal article, 2019)
      This paper reports measurements of relative permeability to methane (CH4) and carbon dioxide (CO2) in hydrate-bearing sandstone core samples. The CH4 (or CO2) permeability was measured at reservoir conditions for different ...
    • Microfluidic hydrogen storage capacity and residual trapping during cyclic injections: Implications for underground storage 

      Lysyy, Maksim; Liu, Na; Solstad, Celine Marie; Fernø, Martin; Ersland, Geir (Journal article; Peer reviewed, 2023)
      Long-term and large-scale H2 storage is vital for a sustainable H2 economy. Research in underground H2 storage (UHS) in porous media is emerging, but the understanding of H2 reconnection and recovery mechanisms under cyclic ...
    • Multi-scale dissolution dynamics for carbon sequestration in carbonate rock samples 

      Haugen, Malin; Folkvord, Olav Parelius; Veien, Torunn; Fernø, Martin; Brattekås, Bergit (Journal article; Peer reviewed, 2023)
      Carbon dioxide (CO2) sequestration in porous, sedimentary reservoirs is a key technology to mitigate emissions of anthropogenic CO2 and curb irreversible climate change. The abundance of carbonate formations, both as saline ...
    • Population-balance modeling of CO2 foam for CCUS using nanoparticles 

      Eide, Øyvind; Fernø, Martin; Bryant, Steven; Kovscek, Anthony R.; Gauteplass, Jarand (Journal article; Peer reviewed, 2020)
      Foam implementation for carbon capture, utilization and storage (CCUS) can greatly improve CO2 mobility control, resulting in enhanced hydrocarbon production and carbon storage capacity. The use of nanoparticles (NP) to ...
    • Pore- and Core-Scale Insights of Nanoparticle-Stabilized Foam for CO2-Enhanced Oil Recovery 

      Alcorn, Zachary Paul; Føyen, Tore Lyngås; Gauteplass, Jarand; Benali, Benyamine; Soyke, Aleksandra; Fernø, Martin (Journal article; Peer reviewed, 2020)
      Nanoparticles have gained attention for increasing the stability of surfactant-based foams during CO2 foam-enhanced oil recovery (EOR) and CO2 storage. However, the behavior and displacement mechanisms of hybrid ...
    • Pore-level Ostwald ripening of CO2 foams at reservoir pressure 

      Benali, Benyamine; Sæle, Aleksandra Magdalena; Liu, Na; Fernø, Martin; Alcorn, Zachary Paul (Journal article; Peer reviewed, 2023)
      The success of foam to reduce CO2 mobility in CO2 enhanced oil recovery and CO2 storage operations depends on foam stability in the reservoir. Foams are thermodynamically unstable, and factors such as surfactant adsorption, ...
    • Pore-scale bubble population dynamics of CO2-foam at reservoir pressure 

      Benali, Benyamine; Føyen, Tore Lyngås; Alcorn, Zachary Paul; Haugen, Malin; Gauteplass, Jarand; Kovscek, Anthony R.; Fernø, Martin (Journal article; Peer reviewed, 2022)
      The flow of CO2 foam for mobility control in porous media is dictated by the foam texture, or bubble density, which is commonly expressed as the number of bubbles per unit of flowing gas. In most high-pressure laboratory ...
    • Pore-scale dynamics for underground porous media hydrogen storage 

      Lysyy, Maksim; Ersland, Geir; Fernø, Martin (Journal article; Peer reviewed, 2022)
      Underground hydrogen storage (UHS) has been launched as a catalyst to the low-carbon energy transitions. The limited understanding of the subsurface processes is a major obstacle for rapid and widespread UHS implementation. ...
    • Relationship Between Microbial Growth and Hydraulic Properties at the Sub-Pore Scale 

      Hassannayebi, Neda; Jammernegg, Boris; Schritter, Johanna; Arnold, Pit; Enzmann, Frieder; Kersten, Michael; Loibner, Andreas P.; Fernø, Martin; Ott, Holger (Journal article; Peer reviewed, 2021)
      Accumulation of microbial biomass and its influence on porous media flow were investigated under saturated flow conditions. Microfluidic experiments were performed with model organisms, and their accumulation was observed ...
    • Room-Scale CO2 Injections in a Physical Reservoir Model with Faults 

      Fernø, Martin; Haugen, Malin; Eikehaug, Kristoffer; Folkvord, Olav Parelius; Benali, Benyamine; Both, Jakub Wiktor; Storvik, Erlend; Nixon, Casey William; Gawthrope, R.L.; Nordbotten, Jan Martin (Journal article; Peer reviewed, 2023)
      We perform a series of repeated CO2 injections in a room-scale physical model of a faulted geological cross-section. Relevant parameters for subsurface carbon storage, including multiphase flows, capillary CO2 trapping, ...