The commodity initially fell yesterday after the Organization of the Petroleum Exporting Countries ended its meeting in Vienna with no agreement, as expected, to lower or cap output despite a global supply glut.
However, it rebounded after a US Department of Energy report showed commercial crude inventories sank by 1.4 million barrels last week, indicating a pick-up in demand in the world's top crude consumer.
At about 0230 GMT, US benchmark West Texas Intermediate for delivery in July was two cents up at USD 49.19 a barrel while Brent for August was four cents higher at USD 50.08.
It added: "This is testament to the fact that the market is moving through the balancing process."
IG Markets analyst Bernard Aw told AFP that OPEC's failure to agree a new ceiling had been priced in by the market.
"The OPEC meeting was of not much surprise and was a non-event," he said.
"For now prices are still sideways and still have that big USD 50 hurdle to clear."
But in the most recent prolonged drop, tumbling from more than USD 100 in mid-2014 to close to USD 25 in January, OPEC -- driven by Saudi Arabia -- has changed tack, keeping oil flowing to maintain market share and squeeze competitors.
Aw said a continued fall in US inventories, coupled with rising demand from China and India, could lead to a "fundamental change in supply and demand".
"The report shows that the US production and stockpiling is on the decline. That helps to ease the oversupply issue and is positive for oil prices," he added.
