Hydrogen, though abundant, doesn’t exist freely in nature and needs to be produced. The decarbonization focus lies in producing “clean” hydrogen, primarily through:
- Electrolysis: This process uses electricity to split water molecules into hydrogen and oxygen. When powered by renewable energy sources, it yields green hydrogen, the cleanest form. Electrolyzer technologies are constantly evolving, with advancements in alkaline, PEM, and solid oxide electrolyzers enhancing efficiency and reducing costs.
- Steam Methane Reforming (SMR) with Carbon Capture and Storage (CCS): This widely used method produces hydrogen from natural gas, but its carbon intensity depends on capturing and storing the emitted CO2. Coupling SMR with CCS is crucial for achieving low-emission hydrogen production.
- Other emerging technologies: Methods like biomass gasification and pyrolysis, when coupled with CCS, also hold potential for low-emission hydrogen production.
Utilization of hydrogen in the oil & gas sector spans a wide spectrum:
- Blending with natural gas: Adding hydrogen to existing natural gas pipelines and infrastructure can reduce the carbon intensity of delivered energy.
- Power generation: Hydrogen can be used as a fuel for gas turbines, replacing natural gas and reducing emissions from power plants that support oil & gas operations.
- Refining processes: Hydrogen is a key component in various refining processes, such as desulfurization and hydrocracking. Utilizing green hydrogen can significantly decarbonize these processes.
- Transportation: Hydrogen fuel cell vehicles are gaining traction as a clean alternative for transportation in the oil & gas industry, offering longer range and faster refueling compared to battery-electric vehicles.
TRL : 7-9 (depending on the specific technology)