Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1016/j.est.2023.108912. This is version 3 of this Preprint.

Add a Comment

You must log in to post a comment.


Comments

There are no comments or no comments have been made public for this article.

Downloads

Download Preprint

Authors

Kishan Ramesh Kumar, Herminio Honorio, Debanjan Chandra, Martin Lesueur, Hadi Hajibeygi

Abstract

Hydrogen is a promising energy carrier for a low-carbon future energy system, as it can be stored on a megaton scale (equivalent to TWh of energy) in subsurface reservoirs. However, safe and efficient underground hydrogen storage requires a thorough understanding of the geomechanics of the host rock under fluid pressure fluctuations. In this context, we summarize the current state of knowledge regarding geomechanics relevant to carbon dioxide and natural gas storage in salt caverns and depleted reservoirs. We further elaborate on how this knowledge can be applied to underground hydrogen storage. The primary focus lies on the mechanical response of rocks under cyclic hydrogen injection and production, fault reactivation, the impact of hydrogen on rock properties, and other associated risks and challenges. In addition, we discuss wellbore integrity from the perspective of underground hydrogen storage. The paper provides insights into the history of energy storage, laboratory scale experiments, and analytical and simulation studies at the field scale. We also emphasize the current knowledge gaps and the necessity to enhance our understanding of the geomechanical aspects of hydrogen storage. This involves developing predictive models coupled with laboratory scale and field-scale testing, along with benchmarking methodologies.

DOI

https://doi.org/10.31223/X5T098

Subjects

Applied Mechanics, Earth Sciences

Keywords

Underground gas storage, cyclic injection and production, fault reactivation, caprock and wellbore integrity, experiments and modelling, leakage

Dates

Published: 2023-08-31 17:47

Last Updated: 2023-09-20 15:03

Older Versions
License

CC BY Attribution 4.0 International