Underground hydrogen storage: A critical assessment of fluid-fluid and fluid-rock interactions

Journal of Energy Storage, Год журнала: 2023, Номер 72, С. 108473 - 108473

Опубликована: Июль 26, 2023

Язык: Английский

---

Integration of underground green hydrogen storage in hybrid energy generation

Fuel, Год журнала: 2024, Номер 371, С. 131899 - 131899

Опубликована: Май 24, 2024

One of the major challenges in harnessing energy from renewable sources like wind and solar is their intermittent nature. Energy production these can vary based on weather conditions time day, making it essential to store surplus for later use when there a shortfall. storage systems play crucial role addressing this intermittency issue ensuring stable reliable supply. Green hydrogen, sourced renewables, emerges as promising solution meet rising demand sustainable energy, depletion fossil fuels environmental crises. In present study, underground hydrogen various geological formations (aquifers, depleted hydrocarbon reservoirs, salt caverns) examined, emphasizing need detailed analysis potential hazards. The paper discusses associated with storage, including requirement extensive studies understand interactions microorganisms. It underscores importance issue, focus reviewing past projects sites, well modeling field. also emphasizes incorporating hybrid into overcome limitations standalone systems. further explores future integrations green within dynamic landscape.

Язык: Английский

---

Applicability of the Vertical Equilibrium model to underground hydrogen injection and withdrawal

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 106, С. 790 - 805

Опубликована: Фев. 6, 2025

Язык: Английский

---

An overview of underground hydrogen storage with prospects and challenges for the Australian context

Geoenergy Science and Engineering, Год журнала: 2023, Номер 231, С. 212354 - 212354

Опубликована: Сен. 23, 2023

Язык: Английский

---

Subsurface hydrogen storage controlled by small-scale rock heterogeneities

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 60, С. 1192 - 1202

Опубликована: Фев. 26, 2024

Subsurface porous rocks hold significant hydrogen (H2) storage potential to support an H2-based energy future. Understanding H2 flow and trapping in subsurface is crucial reliably evaluate their efficiency. In this work, we perform cyclic visualization experiments on a layered rock sample with varying pore throat sizes. During drainage, follows path consisting of large pores throats, through low permeability layer, substantially reducing capacity. Moreover, due the heterogeneity depending experimental strategy, imbibition unexpectedly results higher saturation compared drainage. These emphasize that small-scale heterogeneity, which often unaccounted for reservoir-scale models, plays vital role displacement media, implications efficient strategies.

Язык: Английский

---

Subsurface Hydrogen Storage in Limestone Rocks: Evaluation of Geochemical Reactions and Gas Generation Potential

Energy & Fuels, Год журнала: 2024, Номер 38(11), С. 9923 - 9932

Опубликована: Май 14, 2024

Underground hydrogen storage (UHS) in carbonate reservoirs is a suitable solution for safe and efficient recovery during the cycling process. The uncertainties associated with potential geochemical reactions between hydrogen, rock, brine may impact long-term containment of produced formations. Despite current interest studying hydrogen-rock reactions, only limited work available literature. In this study, we experimentally evaluate reactivity rocks to address gas generation induced by reactions. Limestone samples are treated under 1500 psi 75 °C temperature duration 6 13 months using simple reaction cells. Scanning electron microscopy (SEM) analysis performed examine dissolution/precipitation hydrogen. contrast, chromatography (GC analyzer) inductively coupled plasma optical emission spectroscopy (ICP-OES) conducted detect ion precipitation. experimental results indicate no significant treatment on surface morphology pore structure even after treatment, suggesting that abiotic unlikely occur first stages UHS. Furthermore, presence brine, there apparent indications occurring calcite, traces any other gases detected treatment. Besides, solutions' pH remains almost unchanged, minor increase calcium (Ca2+) ions solution, which attributed water, not promisingly support utilization storage.

Язык: Английский

---

The Influence of CH₄ and CO₂ on the Interfacial Tension of H₂–Brine, Water–H₂–Rock Wettability, and Their Implications on Geological Hydrogen Storage

Energy & Fuels, Год журнала: 2024, Номер 38(16), С. 15834 - 15847

Опубликована: Авг. 2, 2024

Underground porous formations provide significant storage capacity for H2 and CO2, making them a promising solution to aid energy needs mitigate CO2 emissions. The interfacial tension (IFT) of H2–brine within the underground formations, along with H2–H2O–rock wettability, is crucial factor in determining efficiency hydrogen (UHS). Cushion gas normally preinjected maintain reservoir pressure, prevent migration into rock matrix, control both injectivity productivity. Hereby, we examined influence CH4 as cushion gases at different temperatures, pressures, salinity conditions on IFT water–H2–rock wettability. We employed molecular dynamics (MD) simulations confronted our results against experimentally reported data literature. In addition, have assessed interfaces confined slit nanopore relevant calcite silica formations. Our reveal that brine–H2 interface not significantly sensitive pressure. However, increasing temperature reduced H2–brine, contrast increases IFT. (CH4 CO2) reduce when mixed hydrogen, having more pronounced effect than across all salinities. Such an impact due strong water–CO2 interactions compared water–CH4 water–H2 interactions. Both (CO2 CH4) could perturb surface hydrations maintaining zero-contact angle except low pH sandstone Calcite their water-wet state temperature, salinity. sandstone, predicted intermediate very good agreement experimental data. capillary pressure maps are built visualize wettability flow, mechanism, caprock sealing efficiency. pointed out be potential while (at acidic pH), using might lead loss matrix. Furthermore, investigation required confirm such these

Язык: Английский

---

Evaluating Fluid/Rock Interactions for Energy Storage in Salt Caverns – Part II: Effect of Hydrogen on Salt Rock Dissolution in Brine

Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

Язык: Английский

---

Petrophysical Impacts of CO₂ as Cushion Gas in Subsurface Hydrogen Storage

Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Март 28, 2025

Язык: Английский

---

Influence of CO2–brine–kerogen wettability on CO2 sequestration in shale: Implications from molecular dynamics simulation

Petroleum Science, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

---