CNOOC finds gas in ultra-deepwater, ultra-shallow field

China

BEIJING, August 8, 2024 – CNOOC has made a 100-bcm (3.5-tcf) gas discovery in the Lingshui 36-1 gasfield in the southern portion of the South China Sea, the company announced on Thursday.

The average water depth of the gasfield is approximately 1,500 metres and the burial depth is merely around 210 metres, making it an ultra-deepwater, ultra-shallow field. Lingshui 36-1 has been tested to produce over 10 mcm (353 mcf) per day of absolute open-flow natural gas.

“Ultra-shallow gas reservoirs are important sources of hydrocarbons in deep waters. However, you must overcome world-class challenges to explore and develop the reservoirs. CNOOC Limited has adopted new exploration concepts on the formation mechanism and new technological approaches to tackle the challenges. The successful discovery of Lingshui 36-1 has opened up a new area of exploration for gas resources in ultra-deep-water ultra-shallow plays,” noted Xu Changgui, CNOOC’s chief geologist.

Following multiple large gasfield discoveries, including Dongfang 1-1, Liwan 3-1, Lingshui 17-2 and Baodao 21-1, the region’s total proved gas in place stands at more than 1 tcm (35.3 tcf).

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