CNOOC’s first “ultra-deep” well offshore China achieves high production yield

(WO) – CNOOC Limited announced that the D1 well in the Bozhong 19-6 gas-condensate field, the first ultra-deepwater well in Bohai Bay, has achieved a high yield.

The D1 well drilled to a depth of 6,088 m, and is producing approximately 6,300 boed.

The Bozhong 19-6 gas-condensate field is located in central Bohai Bay, with an average water depth of about 20 m. It contains proven oil and gas in place of more than 200 Bcmg more than 200 MMcmo. It is the first gas field of such a size in the deep buried hill play offshore China.

CNOOC adopted an “overall planning, phased implementation and pilot first” strategy to develop this field. CNOOC developed the field through various projects in 2020, 2023 and 2024. The gas field is currently producing approximately 37,500 boed.

Mr. Sun Fujie, Vice President of the Company, said, “The high yield well further confirms the promising potential of offshore deep buried hill plays. The exploration and development of oil and gas resources in the deep plays is expected to accelerate. With the new production, the Company is continuously bolstering its ability to supply clean energy to the Bohai Economic Rim”.