CNOOC starts production from Liuhua 11-1/4-1 oilfield project

The production infrastructure for the Liuhua oilfield secondary development comprises a new deepwater jacket platform, Haiji-2, and a cylindrical FPSO unit, Haikui-1.

CNOOC said the project is set to commission a total of 32 development wells and is expected to reach peak production of roughly 17 900 boe/d by 2026.

The oil produced is classified as heavy crude, and CNOOC holds full ownership and operational control of the project. CNOOC CEO and President Zhou Xinhuai said: “It is the first oilfield in Asia to be developed with the 'Deepwater Jacket Platform + Cylindrical FPSO' mode. The company has overcome various technological challenges to complete the project."

“While revitalising the deepwater oilfields with original oil in place over 100 million t, the new mode has substantially reduced the construction and production costs. It provides a Chinese solution for the efficient development of similar deepwater oil and gas fields.” Recently, CNOOC initiated production at the Wushi 23-5 oilfield, the first in the South China Sea to be powered from shore.

The Wushi 23-5 oilfield development includes two new wellhead platforms and the upgraded Wushi terminal. Located in the Beibu Gulf at an average water depth of around 28 m, the oilfield is anticipated to reach peak production of around 18 100 boe/d by 2026, with the oil being light crude.

Last week, CNOOC said it achieved a breakthrough in ultra-deepwater natural gas exploration by successfully drilling a well in the Liwan 4-1 structure within the Pearl River Mouth Basin. Positioned in the Baiyun Sag, roughly 300 km south-east of Shenzhen, the well reached a water depth of nearly 1640 m. The well's testing yielded an absolute open flow natural gas production rate of 430 000 m³ per day.

Read the article online at: https://www.oilfieldtechnology.com/drilling-and-production/23092024/cnooc-starts-production-from-liuhua-11-14-1-oilfield-project/