VIENNA, July 5 (Xinhua) -- OPEC and its allies, collectively known as OPEC+, announced the decision on Saturday to increase oil output by 548,000 barrels per day (bpd) in August, ...

LANZHOU, July 23 (Xinhua) -- Changqing Oilfield, China's largest oil-and-gas field, on Wednesday announced that its daily shale oil output had totaled 10,006 tonnes -- a milestone in China's shale oil ...