Optimizing Hydrogen Storage in Aquifers for Economic Feasibility
Key Ideas
- Investigation into using an optimization workflow to maximize hydrogen storage and net present value in aquifers.
- Concerns addressed about economic feasibility of underground hydrogen storage in aquifers.
- Discussion on the components of an aquifer storage system for hydrogen and the purpose of cushion gas and working gas.
- Importance of optimizing reservoir development strategy for efficient hydrogen storage and potential economic gains.
The paper delves into the challenges surrounding the economic feasibility of utilizing underground hydrogen storage (UHS) in aquifers and proposes an optimization workflow to tackle these concerns effectively. The primary focus is on maximizing both hydrogen storage capacity and the net present value (NPV) to establish an optimal reservoir development strategy. Aquifer storage systems for hydrogen typically comprise a brine-saturated formation layer, injection and withdrawal wells, and surface pipelines. The injected hydrogen is separated into cushion gas, used to maintain minimum pressure, and working gas for temporary storage and future production. The cyclic process involves injecting working gas into the subsurface, mixing it with formation fluid, and extracting it when needed. By optimizing this process, the authors aim to enhance both hydrogen storage efficiency and economic viability. The study emphasizes the importance of considering factors like reservoir characteristics, operational parameters, and economic aspects to develop a successful UHS project. Through a systematic optimization approach, the researchers seek to address challenges and uncertainties related to UHS in aquifers, paving the way for more sustainable and economically feasible hydrogen storage solutions.
Topics
Production
Underground Storage
Aquifer Storage
Reservoir Development
Optimization Workflow
Net Present Value
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