petroleum refining is petroleum refining
Something that contains no petroleum is petroleum-free.
A. E. Dunstan has written: 'The science of petroleum' -- subject(s): Petroleum engineering, Petroleum industry and trade 'Chemistry and the petroleum industry' -- subject(s): Petroleum
Norman J. Hyne has written: 'Geology for petroleum exploration, drilling, and production' -- subject(s): Petroleum, Prospecting, Petroleum engineering, Geology 'Dictionary of petroleum exploration, drilling & production' -- subject(s): Dictionaries, Petroleum, Petroleum engineering 'Nontechnical guide to petroleum geology, exploration, drilling, and production' -- subject(s): Prospecting, Petroleum, Petroleum engineering, Geology
petroleum is a science fact
No, it is not. Petroleum is a form of resource.
a bit
Products in this industry include calcined petroleum coke, regular petroleum coke, fireplace logs, fuel briquettes, or petroleum waxes, independently of petroleum refineries.
Victor Ross has written: 'The evolution of the oil industry' -- subject(s): Petroleum industry and trade, Petroleum 'Petroleum in Canada' -- subject(s): Petroleum, Petroleum industry and trade
Butane is a bi-product of petroleum which is formed after refining petroleum, it is also known as petroleum gas.
Algeria exports petroleum gas, crude petroleum, refined petroleum, ammonia, and fertilizer.
Petroleum Petroleum