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Hydrogen storage

Geological formations must meet several requirements for hydrogen storage. The most important requirements relate to the technical leakproofness of the storage formation, which is tested several times in the course of storage tank production, and to the access well to the selected storage facility. This includes all elements installed in the borehole and their functions (completion).

Because the compressibility of hydrogen is quite high, it is assumed that the proportion of cushion gas (unusable gas components below the minimum pressure) must be kept low when planning a hydrogen storage tank.

Because hydrogen is quite reactive, it is essential to ensure that reactions with micro-organisms and fluids in the storage facility are kept to a minimum when analysing the storage formation.