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Saudi
Arabia has vast reserves of natural gas, including dissolved, associated
and non-associated gases. Most of the natural gas produced is associated
gas - light hydrocarbon gases such as ethane and propane produced
in association with crude oil. Until the 1970s, most of this gas
was flared off. The Master Gas System, constructed and operated
by Saudi Aramco, now enables Saudi Arabia to use approximately
two-thirds of the gas associated with onshore oil production. The
remaining one-third is reinjected into oilfields, thereby eliminating
flaring. The system consists of a network of plants for gas-oil
separation, processing and fractionation, linked by a computer
controlled pipeline system totaling 7,266 miles.

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