OPEC has pledged to cut 4.2 million barrels a day from production since September, and the group's former president, Algerian Energy and Mines Minister Chakib Khelil, told state media on Sunday that the 13-nation cartel is likely to cut further when it meets on March 15.
The Energy Information Agency reported last week that crude inventories in U.S. storage fell unexpectedly, proof the OPEC cuts are starting to impact supplies, Shum said.
"OPEC production cut are starting to show up in real data rather than just anecdotal evidence," Shum said. "Oil has shown a remarkable resilience considering the bad economic backdrop."