A set of technologies that is expected to have its first results four years from now is designed to resolve one of the world's greatest oil and gas exploration challenges today: carbon dioxide (CO2) and methane (CH4) emission in the atmosphere.
The innovation, the result of a patent deposited in 2018, consists of injecting the CO2 and CH4 that comes from wells during oil extraction into salt...
http://www.spacedaily.com/reports/Carbon_gas_storage_cavern_is_the_best_way_to_obtain_clean_energy_from_a_fossil_fuel_999.html