US oil major Chevron is continuing to push for more operational freedom in Venezuela, but there are doubts that more crude exports are on the cards any time soon.

Sources told Reuters that Chevron wants to revive production and resume trading Venezuelan oil, in what would be a boost for tanker demand.

The company has asked the US government to expand its licence in the sanctioned South American country after Chevron agreed to revamp its joint ventures with state-run oil company Petroleos de Venezuela SA (PDVSA).