ExclusiveDuo battle for coveted Adnoc engineering deal for multi-Tcf gas development projectThe Bab gas cap reservoir has the potential to produce up to 500 MMcfd of gasSultan Ahmed Al Jaber,chief executive of the UAE's Abu Dhabi National Oil Company (Adnoc).Photo: AFP/SCANPIXNishant UgalMiddle East and South Asia EditorNew Delhi