China’s energy giant, CNOOC Limited has informed that production has begun at the Penglai 19-3 oilfield 1/3/8/9. CNOOC is the operator in this project, holding 51% interest in the oilfield, rest 49% are being held by ConocoPhillips. This comprehensive adjustment project is located in Bohai Sea and has the advantage of existing facilities at Penglai 19-3 oilfield. The water depth of the oilfield is 27 to 33 m.