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RESEARCH PRODUCT

Hydrogen underground storage—Petrographic and petrophysical variations in reservoir sandstones from laboratory experiments under simulated reservoir conditions

Steven FleschDieter PudloFrieder EnzmannDaniel AlbrechtArne Jacob

subject

HydrogenEnergy Engineering and Power Technologychemistry.chemical_elementSoil scienceAquifer02 engineering and technology7. Clean energyPetrography0502 economics and business050207 economicsgeographygeography.geographical_feature_categoryRenewable Energy Sustainability and the Environmentbusiness.industry05 social sciencesPetrophysics021001 nanoscience & nanotechnologyCondensed Matter PhysicsRenewable energyFormation fluidNatural gas fieldFuel TechnologychemistryEnvironmental scienceSedimentary rock0210 nano-technologybusiness

description

Abstract Fluctuating energy production by renewables is one of the main issues in transition times of energy production from conventional power plants to an energy production by renewables. Using excess produced electricity (windy/sunny periods) to convert water to oxygen and hydrogen and storing the hydrogen in depleted oil-, gas fields or sedimentary aquifer structures would provide the option to recover and convert hydrogen to electricity in periods with an energy demand. Research focus is here the pore space in the geological underground where still few studies exist. In static batch experiments up to six weeks long, under different reservoir-specific conditions; regarding pressure, temperature and formation fluid salinity, sandstones were exposed to 100% hydrogen. Before and after these experiments microscopic, petrophysical and computer tomography analyses are conducted. The preliminary results from different scales (μm to cm) and dimensions (2D and 3D) of 21 samples indicate that hydrogen underground storage is likely possible.

https://doi.org/10.1016/j.ijhydene.2018.09.112