CNOOC Ltd. has made a new mid- to large-sized natural gas deepwater discovery, Lingshui 25-1, in the northeast part of Ledong Sag in South China Sea’s Qiongdongnan Basin, a news release said.

The discovery well was drilled and completed at a depth of about 4,000 m (13,123 ft) and encountered the oil and gas pay zone with a total thickness of about 73 m (240 ft), the release said. The well was tested to produce about 1 MMcm (35.6 MMcf) of natural gas and 395 bbl/d.

Lingshui 25-1 follows CNOOC’s Lingshui 17-2 deepwater discovery.