Hydrogen Storage in Salt Cavities: Advanced Cement Solutions

H2 storage offers a promising solution for storing excess electrical energy from renewable sources by converting it into green hydrogen (H2) and storing it in salt cavities. However, producing hydrogen is costly, and it is a highly dangerous, flammable, and explosive gas. Therefore, ensuring proper well design and cement formulation is crucial to prevent leaks. Initially, salt rock can impact cement placement, and the properties of the cement may change after interacting with the salt during setting due to the osmotic exchange of cations and anions. Consequently, it is essential to investigate and propose adaptable cement formulations that ensure a competent well barrier envelope for long-term, leak-free green hydrogen storage.

The objective of this study is to define the best cement formulations for cementing thick salt formations used for H2 storage during and after placement.