BEIJING, Feb. 18 (Xinhua) -- PetroChina announced that its Daji gas field, China's first successfully developed deep coal-measure gas field, has achieved cumulative production of over 3 billion cubic ...

​Deep Sea No. 1, China's first independently developed ultra-deepwater gasfield, has recorded a cumulative natural gas output exceeding 10 billion cubic meters and over one million cubic meters of con ...