Aerial photo taken on Sept. 27, 2019 shows sunset scenery at Daqing Oilfield in northeast China's Heilongjiang Province. [Photo/Xinhua]
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 tonnes.
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 tonnes.
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