Exxon advances talks to return to Venezuela's Orinoco Belt, sources say ↧ ↧ Exxon advances talks to return to Venezuela's Orinoco Belt, sources... ExxonMobil is negotiating to return to Venezuela and has shown interest in the large Petromonagas heavy oil project in the Orinoco Belt - where the ​US energy major previously had a stake - as well as in areas in the neighboring Carabobo block, according to people familiar with the matter.