Abdulaziz Al-Qasim

The great energy transition is underway and the world is articulating aggressive plans to decarbonize. One option is a move towards hydrogen – a clean energy carrier or source. Most of the work on hydrogen has been done on the downstream side (surface), and limited work has been done on the upstream side (sub-surface). This paper provides an overview of upstream hydrogen technologies. Four specific research areas are addressed under this initiative. These include (a) in-situ generation of hydrogen from depleted oil and gas reservoirs, (b) storage of hydrogen in subterranean reservoirs, (c) conversion of H2S to H2, (d) enriching natural gas with hydrogen during transport, and e) naturally occurring hydrogen.