Exxon sells a 25% stake in the West Qurna-1 oil field near Basra, Iraq, to Sinopec. And a 10% stake to Pertamina. This field produces 510,000 barrels a day with potential for 3 million barrels a day. Exxon and Shell are heading the $50 billion project. The project is a service contract with the Iraqi government to develop the oil field. After the sale of the stake estimated at about $5 billion for a 10 year contract Exxon retains a 25% stake. Exxon is managing risk in the project after differences with the Iraqi government over its investments in the Kurdistan part of Iraq.