"It seems as if the pull backs are just short-term profit taking and we will see whether people are going to be willing to drive the market through $80 again," he said.
The strength came as U.S. Secretary of State Mike Pompeo's remarks on Iran strategy showed that the United State was after regime change in the Islamic Republic, a senior Iranian official told Reuters on Monday.
Venezuela's socialist President Nicolas Maduro faced widespread international condemnation on Monday after his re-election in a weekend vote his critics denounced as a farce cementing autocracy in the crisis-stricken oil producer.
The United States is actively considering oil sanctions on OPEC member Venezuela, where output has dropped by a third in two years to its lowest in decades.
"The specter of U.S. oil sanctions on the embattled Latin American producer now looms large as Washington strives to tighten the financial noose," PVM Oil Associates strategist Stephen Brennock said in a note.
A possible U.S. trade war with China is "on hold" after the world's two largest economies agreed to drop their tariff threats while they work on a wider trade agreement, U.S. Treasury Secretary Steven Mnuchin said on Sunday, giving global markets a lift in early Monday trade.
Stabilizing trade relations between the countries could boost oil demand, Tradition's McGillian said.