This undated photo provided by CNOOC shows the Lingshui 36-1 gas field in waters southeast of Hainan, China's southernmost island province. The original gas in place (OGIP) of the Lingshui 36-1 gas field -- the world's first large, ultra-shallow gas field in ultra-deep waters -- has been estimated at more than 100 billion cubic meters, according to the China National Offshore Oil Corporation (CNOOC). (Photo: Xinhua)
This undated photo provided by CNOOC shows the Lingshui 36-1 gas field in waters southeast of Hainan, China's southernmost island province. The original gas in place (OGIP) of the Lingshui 36-1 gas field -- the world's first large, ultra-shallow gas field in ultra-deep waters -- has been estimated at more than 100 billion cubic meters, according to the China National Offshore Oil Corporation (CNOOC). (Photo: Xinhua)