Title

Hydrogen wettability of sandstone reservoirs: Implications for hydrogen geo-storage

Document Type

Journal Article

Publication Title

Geophysical Research Letters

Volume

48

Issue

3

Publisher

Wiley

School

School of Engineering

RAS ID

35587

Funders

Edith Cowan University

Comments

Iglauer, S., Ali, M., & Keshavarz, A. (2021). Hydrogen wettability of sandstone reservoirs: Implications for hydrogen geo‐storage. Geophysical Research Letters, 48(3), article e2020GL090814. https://doi.org/10.1029/2020GL090814

Abstract

© 2020. American Geophysical Union. All Rights Reserved. Hydrogen is currently assessed as a future clean fuel in a hydrogen economy. However, one key problem with implementing a full-scale hydrogen economy is hydrogen storage (as hydrogen is highly compressible and volatile). One solution for this problem is hydrogen geo-storage, where compressed hydrogen is injected into geological formations, and the hydrogen can be withdrawn again at any time. However, there is a serious lack of data for realistic geologic conditions, including for hydrogen-rock wettability, which is proven to determine injectivities, withdrawal rates, storage capacities, and containment security. We thus measured this parameter at various geo-storage conditions. For a realistic storage scenario in a deep sandstone aquifer, we found that the rock (quartz) was weakly water-wet or intermediate-wet. Increasing pressure, temperature, and organic surface concentration increased hydrogen wettability. This study, thus, provides fundamental data and aids in the industrial-scale implementation of a future hydrogen economy.

DOI

10.1029/2020GL090814

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