 It has been estimated that between 1991-1999 the volume of contaminated waste waters from the Russian oil industry amounted to 200 million cubic meters.Complete utilization of co-extracted gas in oil extraction does not exceed 80% in Russia, it has been variously estimated that annually 5-17 billion cubic meters of un-utilized gas extracted alongside oil is burnt in "gas torches," with 400,000 tons or more hazardous substances released into the atmosphere from this each year, creating the double impact of wasted resource and negative environmental effect.560 million tons of methane is estimated to leak annually into the atmosphere from oil and gas extraction, not counting accidental outbursts and pipe breakage.