9,508 meters! China's first deep-sea well begins production
With a drilling depth of 9,508 meters and a horizontal displacement of 8,689 meters, China's first deep-sea well, the China National Offshore Oil Corporation (CNOOC) Enping 21-4 Oilfield A1H well, has successfully began production in the Pearl River Mouth Basin offshore area recently, with a daily test production of over 700 tons of crude oil.