Economy ONGC files arbitration claim against Sudan Updated : April 17, 2018 12:44 PM IST At the centre of the dispute is ONGC's 25 percent stake the company acquired in the Greater Nile Oil Project. ONGC Videsh had expected Sudan to clear the dues after lifting of the U.S. sanctions last year. ONGC will also file arbitrations for the remaining outstanding amount in due course. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.