China discovers major shale oil field

Oil extraction machines work in Daqing Oilfield in Northeast China's Heilongjiang province. (XINHUA)

HARBIN – China's Daqing Oilfield, a subordinate of the China National Petroleum Corporation, announced Wednesday the discovery of a major shale oil field with predicted geological reserves of about 1.27 billion tons. 

ALSO READ: China's largest oil-gas field reports record output