In June , 2011 , ExxonMobil announced two major oil and gas discoveries in Keathley Canyon blocks 918 , 919 , and 964 ( Hadrian field ) southwest of New Orleans , with combined estimated reserves of . The find was " the company ’s first deepwater exploration well following a U.S. moratorium " after the Deepwater Horizon explosion and oil spill in the Gulf in 2010 and " one of the largest discoveries in the Gulf ... in the last decade . " " Exxon holds a 50 % working interest in four ... blocks . Units owned by Petrobras and Eni SPA hold a 25 % interest in three of the blocks . Petrobras also owns 50 % of one of the blocks . "
oil spill
Deepwater Horizon oil spill
Keathley Canyon