Blar i Bergen Open Research Archive på forfatter "Liu, Na"
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Impact of gas type on microfluidic drainage experiments and pore network modeling relevant for underground hydrogen storage
Lysyy, Maksim; Liu, Na; Landa-Marbán, David; Ersland, Geir; Fernø, Martin (Journal article; Peer reviewed, 2024)Underground hydrogen storage (UHS) in geological reservoirs is proposed as a technically feasible solution to balance mismatch between supply and demand in emerging markets. However, unique hydrogen properties and coupled ... -
Impact of microbial biofilms on subsurface energy systems – from oil and gas to renewable energy
Liu, Na; Dopffel, Nicole; An-Stepec, Biwen (Chapter, 2024)Microbial biofilms play a crucial role in subsurface energy systems, such as hydrocarbon reservoirs and underground CO2 and hydrogen (H2) storage. Biofilm accumulation in the pore space can result in clogging, which can ... -
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 ... -
Microfluidic study of effects of flow velocity and nutrient concentration on biofilm accumulation and adhesive strength in the flowing and no-flowing microchannels
Liu, Na; Skauge, Tormod; Landa-Marbán, David; Hovland, Beate; Thorbjørnsen, Bente; Radu, Florin Adrian; Vik, Bartek Florczyk; Baumann, Thomas; Bødtker, Gunhild (Journal article; Peer reviewed, 2019)Biofilm accumulation in porous media can cause pore plugging and change many of the physical properties of porous media. Engineering bioplugging may have significant applications for many industrial processes, while improved ... -
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 kinetics of calcium dissolution and secondary precipitation during geological carbon storage
Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)Geological carbon storage (GCS) in deep underground formations presents a significant opportunity to mitigate anthropogenic emissions of carbon dioxide in the context of climate change. The injected carbon dioxide may ... -
A pore-scale model for permeable biofilm: Numerical simulations and laboratory experiments
Landa-Marban, David; Liu, Na; Pop, Iuliu Sorin; Kumar, Kundan; Pettersson, Per; Bødtker, Gunhild; Skauge, Tormod; Radu, Florin Adrian (Peer reviewed; Journal article, 2019)In this paper, we derive a pore-scale model for permeable biofilm formation in a two-dimensional pore. The pore is divided into two phases: water and biofilm. The biofilm is assumed to consist of four components: water, ... -
Pore-scale spatiotemporal dynamics of microbial-induced calcium carbonate growth and distribution in porous media
Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)The naturally occurring bio-geochemical microbial-induced calcium carbonate precipitation (MICP) process is an eco-friendly technology for rehabilitating construction materials, reinforcement of soils and sand, heavy metals ... -
Pore-scale study of microbial hydrogen consumption and wettability alteration during underground hydrogen storage
Liu, Na; Kovscek, Anthony R.; Fernø, Martin Anders; Dopffel, Nicole (Journal article; Peer reviewed, 2023)Hydrogen can be a renewable energy carrier and is suggested to store renewable energy and mitigate carbon dioxide emissions. Subsurface storage of hydrogen in salt caverns, deep saline formations, and depleted oil/gas ...