KAUST study: Storing hydrogen in oil reservoirs to support energy
A recent research study conducted by a team of experts at King Abdullah University of Science and Technology (KAUST) has revealed innovative solutions that could transform the future of renewable energy. The researchers explored the possibility of repurposing depleted oil reservoirs as strategic underground hydrogen storage sites. This pioneering study utilizes Liquid Organic Hydrogen Carriers (LOHC) technology, which enables the safe and cost-effective storage and transport of hydrogen.
Details of the study and the technology used
This research was led by Professor Hussein Hoteit and Dr. Zeeshan Tarek from the Energy Resources and Petroleum Engineering program at KAUST. The team focused on evaluating the technical feasibility of storing hydrogen in a chemically bound form within geological formations that previously contained oil. Liquid organic hydrogen carriers (LOHCs) are chemical compounds capable of absorbing hydrogen and releasing it when needed, thus solving the problem of traditional storage methods that require high pressure or extreme cooling.
Strategic and economic importance
This study is particularly important given the global trend toward energy transition and aligns directly with the goals of Saudi Vision 2030 and the Saudi Green Initiative, which aim to position the Kingdom as a global leader in clean hydrogen production and export. Reusing existing oil and gas infrastructure, rather than constructing new and costly storage facilities, represents an ideal model for a circular carbon economy, transforming old assets into efficient tools for the future energy system.
Enhanced oil recovery and long-term storage solutions
The study's findings indicate a dual benefit of this approach: in addition to providing massive long-term energy storage facilities to mitigate the intermittency of renewable energy sources (such as solar and wind), the injection of these materials can enhance the recovery of remaining oil in the reservoirs. This integration of technologies increases the economic viability of projects and reduces the waste of natural resources.
The future of energy infrastructure
Professor Hoteit emphasized that the rapid evolution of energy systems necessitates a holistic view of existing infrastructure. The reservoirs that have served the world for decades in fossil fuel production possess unique and proven geological characteristics that, based on a precise scientific understanding, qualify them to play a pivotal role in the hydrogen era. This study provides an important applied reference for countries and companies with mature oil assets, opening up opportunities to transform environmental challenges into sustainable investment opportunities.
