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CNOOC discovers deepwater gasfield
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CHINA’S largest producer of offshore oil and gas CNOOC said yesterday that CNOOC 981, the country’s first deepwater drilling rig, has made its first deepwater gasfield discovery in the South China Sea.
The Lingshui 17-2 gasfield, some 150 kilometers south of Hainan Island, is in the east Lingshui Sag of the Qiongdongnan Basin, the company said in a statement.
It is an ultra-deepwater gasfield at an average operational water depth of 1,500 meters. The definition of deepwater varies as technology develops. Currently, deepwater refers to anything below 500 meters, while depths over 1,500 meters are termed ultra-deepwater.
Xie Yuhong, a CNOOC manager, said the well would produce 1.6 million cubic meters of gas per day, equivalent to about 9,400 barrels of liquid oil per day, the highest daily flow of all CNOOC’s gas wells during testing.
The discovery needs to be confirmed by the resources reserve authority and, until then, the exact exploitable reserves cannot be reported.
According to Xie, the gasfield could be very large, given test results so far. A large gasfield generally means at least 30 billion cubic meters.
Wang Yilin, CNOOC chairman, said discovery of the field opened the door to deepwater oil and gas resources in the South China Sea and the exploration potential of deepwater areas there.
Lingshui 17-2 is the first significant deepwater discovery by semi-submersible rig CNOOC 981.
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