China National Offshore Oil Corp (CNOOC), the country's leading offshore oil producer, is seeking to invest in a giant oilfield in Ghana to enhance its overseas development plans.

Beijing-based CNOOC is in talks with Ghana National Petroleum Corp to make a bid for a stake in the Jubilee oilfield, the Wall Street Journal reported, citing unnamed people.

This would rival ExxonMobil's $4-billion offer for the field, which is located off the coast of Ghana, the report said.