FILE - This Jan. 30, 2012, file photo, shows the sign for the Exxon Mobil Torrance Refinery in Torrance, Calif. A person familiar with the matter said Wednesday, April 19, 2017, that Exxon Mobil is seeking permission from the U.S. government for approval to resume drilling around the Black Sea with a Russian partner, state-owned Rosneft. (AP Photo/Reed Saxon, File)