China recently discovered the world's largest metamorphic rock oilfield in the Bohai Sea, according to the China National Offshore Oil Corporation on February 25. Located about 170 kilometers away from Tianjin Municipality, the Bohai 26-6 oilfield stores a record-breaking amount of oil and gas, with newly proved oil and gas reserves exceeding 40 million cubic meters. The cumulative proven reserves of the field surpass 200 million cubic meters.

The encouraging discovery is a result of China's progress in independent oil and gas exploration technologies. More than 80 wells drilled by several well-known international oil companies in nearby regions previously failed to make significant discoveries.