Afren spin-off Gasol has named former Opec secretary-general Rilwanu Lukman as chairman, replacing Cornelia Meyer, who stepped down with effect from 1 August. Lukman co-founded Afren and served as its non-executive chairman from November 2006 to December 2008, and as strategic adviser to the board from July 2007 to December 2008, stepping down when he was named Nigerian petroleum resources minister by President Umaru Musa Yar’Adua.