The British giant has been working with Reliance since 2008 on a deepwater block in the Krishna Godavari basin that they co-own.

FORBES: Mukesh Ambani's Reliance Industries inks $7.2 billion deal with BP

However, it sold off its 30% stake in the ES-M-661 offshore block located in the Espirito Santo basin to Petrobras.

FORBES: Anadarko's Future Looks Bright As Major Projects Are On Track

In Sudan, Lundin retains an interest in Block 5B of Sudan's Muglad Basin.

CENTERFORSECURITYPOLICY: The Dirty Dozen #10: Lundin Petroleum