Chevron Overseas (Congo) has started oil and gas production from the Lianzi Field, located in a unitized offshore zone between the Democratic Republic of Congo and the Republic of Angola, RigZone reported.

Discovered in 2004, Lianzi is located 105km offshore in 3,000ft of water and is the company’s first operated asset in the Republic of Congo. The project is expected to produce an average of 40,000 barrels of crude oil per day, according to a Chevron statement.

The field includes a sub-sea production system and a 43km electrically heated flowline system, which transports the oil to the Benguela Belize-Lobito Tomboco platform located in Angola’s Block 14.

The Lianzi Field is operated by Chevron Overseas (Congo), which holds a 15.75% interest.

Ali Moshiri, president of Chevron Africa and Latin America Exploration and Production Company, said in a Chevron statement: “As the first offshore energy development spanning national boundaries in the Central Africa region, Lianzi represents a unique cooperative approach to share offshore resources and may serve as a model for the development of similar cross-border fields between two countries.”