Total is seeking to sell its 12.5% stake in a major deepwater oilfield off the coast of Nigeria, industry, and banking sources have said. The plan is reportedly an effort to adjust the energy company's Africa portfolio amid a broad expansion. Reuters reports that the stake in Oil Mining Lease (OML) 118, which is located some 120 kilometers (75 miles) off the Niger Delta, is valued at up to $750 million, according to two of the sources. Investment bank Rothschild is running the sale process for Total, Reuters sources also said. A spokeswoman for Total declined to comment. Rothschild equally declined to comment. The sale process is part of Total's plan to sell $5 billion of assets around the world by 2020, the sources said. Formerly Bonga field (Nigeria's first deepwater project) before being renamed as OML 118, it is said to contain approximately 6,000 million barrels of oil. It was discovered in 1996, and the federal government gave approval for its development in 2002 and began production in 2005. It produced around 225,000 barrels of oil and 150 million standard cubic feet of gas per day at its peak.