Sasol is considering additional divestments, including the potential sale of stakes in an African gas pipeline and a Middle Eastern plant, as it explores ways to reduce its $10-billion debt pile, people with knowledge of the matter said. South Africa’s biggest company by revenue is working with advisers to review its 49% stake in Oryx GTL, which runs a gas-to-liquids plant in Qatar, according to the people. It is also weighing options for its upstream business Sasol Exploration & Production International as well as its 50% holding in the Rompco gas pipeline, the people said, asking not to be identified because the information is private.