Conventional Oil & Gas: onshore oilfield, offshore oilfield, onshore gasfield, offshore gasfield.
Unconventional Oil & Gas: coalbed methane, shale gas, oil shale, oil sand.
Coal to Oil and Gas: coal-to-SNG, coal gas methanation.
Pipeline & Storage: crude oil pipeline, oil product pipeline, natural gas pipeline, oil storage, underground gas storage.
Refining & Petrochemical: oil refinery, gas chemical.
LNG/CNG: LNG plant, LNG receiving terminal, LNG satellite station, CNG plant.
Other: gas power, city gas.