Oil jumped before giving up some of the gains as a deal between key producers Saudia Arabia and Russia stopped short of offering an actual limit on output. The US dollar slipped amid bets the Federal Reserve won't hike rates this month.
"Freezing production is one of the preferred possibilities," Saudi Energy Minister Khalid al-Falih said speaking alongside Russian counterpart Alexander Novak at the G20 summit in China, according to Reuters. "But it does not have to happen specifically today."
The comments came ahead of this month's meeting of OPEC member countries and other oil producers in Algiers, where some hope for an agreement to cap output and ease the global glut. Brent crude moved as high as US$49.33 earlier in the session.
"Verbal intervention was again needed to trigger a recovery towards US$50," senior ABN Amro economist Hans van Cleef told Reuters.
"After all, if prices remain too low ahead of the meeting, there is a risk that at some point Russia and Saudi Arabia actually need to act," van Cleef said. "That would probably be the last thing they want as long as Iran is raising output."