Shengli Oilfield, China's second-largest oilfield, discovered a new geological reserve of petroleum, which is equivalent to a medium-sized oil field. Recently, the discovery has been approved by the Ministry of Natural Resources.

File photo: CCTV

The 31 million-ton-reserve involves 26 blocks of 10 oil fields and the exploitable reserve of which is more than 5 million tons. The reserve also features good physical properties, high productivity and mobility.

(Compiled by Wang Pengda)