中海油9月10日宣布，在珠江口盆地荔湾4-1构造超深水区成功钻探一口天然气井，日均获43万立方米畅通天然气流量，这是我国超深水碳酸盐岩勘探的首次重大突破。

该井位于白云凹陷，距深圳东南 300 公里，水深 1,640 米。该井垂直钻深近 3,000 米，完井深度 4,400 米，水平段钻遇约 650 米的含气层。

中海油首席地质学家徐长贵在一份新闻稿中表示，可利用附近荔湾3-1气田的现有生产设施来开发这一新发现。

CNOOC Ltd. announced Sept. 10 it has drilled a natural gas well in the ultra-deepwater area of ​​the Liwan 4-1 structure in the Pearl River Mouth Basin. The well marks the first major breakthrough in China’s ultra-deepwater carbonate exploration, as it yielded a daily unimpeded natural gas flow rate of 430,000 cu. m.

The well is located in the Baiyun Sag and sits 300 km southeast of Shenzhen in 1,640 m of water. Drilled to a vertical depth of nearly 3,000 m and completed at a 4,400 m, the well encountered a gas pay zone of approximately 650 m in the horizontal section.

In a press release, Xu Changgui, CNOOC’s chief geologist, said that existing production facilities at the nearby Liwan 3-1 gas field could be utilized to develop the new discovery.