China's CNOOC Ltd. announced Tuesday that the company has successfully made a new mid-to-large sized natural gas discovery at the Lingshui 25-1 deepwater exploration well in Qiongdongnan Basin in the South China Sea.
The Lingshui 25-1-1 prospect, drilled and completed at a depth of about 13,123 feet (4,000 meters), encountered the oil and gas pay zone with a total thickness of around 239 feet (73 meters), with well test producing approximately 35.6 million cubic feet of natural gas and 395 barrels of oil per day.
The Lingshui 25-1 structure, located in the northeast of Ledong Sag in Qiongdongnan Basin, lies in average water depth of about 3,215 feet (980 meters).
Lingshui 25-1 is the second mid-to-large sized natural gas discovery following the Lingshui 17-2 find as CNOOC pursue deepwater exploration offshore China independently. The discovery was made by China's first locally built deepwater rig -- HYSY 981 (UDW semisub).
"The new discovery has not only opened up a new exploration chapter in deepwater area of northern South China Sea, but also further proven the good exploration prospects in deepwater area of Qiongdongnan Basin," CNOOC said in a press release.
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