Exxon Neftegas Limited is a defunct subsidiary of the American oil company ExxonMobil which operated mostly in Russia, notably Sakhalin and other parts of the Far East. ENL was the primary American operator of Sakhalin-I Consortium, which oversaw exploration and production of oil and gas on both Sakhalin island and in the Chayvo, Odoptu and Arkutun-Dagi fields in the Sea of Okhotsk. The subsidiary is incorporated in the Bahamas and has an office in Yuzhno-Sakhalinsk. Exxon Neftgas was led by future ExxonMobil CEO Rex Tillerson from 1998 to at least May 2001.