Brent LCOc1 was 60 cents higher at $50.82 a barrel by 1255 GMT (8.55 a.m. ET) after hitting an early high of $51.09. U.S. light crude oil CLc1 was last up 60 cents at $47.93.

Global benchmark Brent crude LCOc1 was up 68 cents at $49.41 a barrel by 1327 GMT (9.27 a.m. ET). U.S. light crude CLc1 oil was 69 cents higher at $46.57 a barrel.

U.S. crude CLcv1 rose 2.09 percent to $46.47 per barrel and Brent LCOcv1 was last at $49.45, up 2.21 percent on the day.

U.S. crude CLc1 fell $2.05 or 4.3 percent to $45.77, by 12:08 p.m. Brent was down $2.07, or 4.1 percent to $48.71.

OPEC and non-OPEC oil producers look likely to extend their agreement to limit supplies beyond its June expiry to help clear a glut, three OPEC delegates said on Thursday, downplaying the chance of additional steps such as a bigger cut.

NYMEX crude for June delivery CLc1 was down 12 cents at $49.21 a barrel by 0619 GMT. London Brent crude for new front-month delivery in July LCOc1 was down 15 cents at $51.90.

U.S. West Texas Intermediate (WTI) crude oil futures were trading at $49.37 per barrel at 0644 GMT, down 25 cents, or 0.5 percent from their last close. WTI has lost around 8.5 percent in value from its April peak. Brent crude futures, the international benchmark for oil prices, were at $51.63 per barrel, down 19 cents, or 0.37 percent. Brent is almost 9 percent below its April peak.

The World Bank is holding steady its crude oil price forecast for this year at $55 per barrel, increasing to an average of $60 per barrel in 2018. Rising oil prices, supported by production cutbacks by Organization of the Petroleum Exporting Countries (OPEC) and non-OPEC states, will allow markets to gradually rebalance. These oil price forecasts are subject to downside risks should the rebound in the U.S. shale oil industry be greater than expected.

“If OPEC and the coalition don’t extend the agreement to continue cuts, that price floor will go,” he said. “Without it, prices would fall, and there’s nothing to stop oil going below $40 a barrel.”

The June crude oil contract on the New York Mercantile Exchange dropped 39¢ on Apr. 24 to close at $49.23/bbl. The July contract decreased 39¢ to $49.58/bbl. The natural gas price for May fell 3.5¢ to a rounded $3.07/MMbtu. The Henry Hub cash gas price was $2.98, down 6¢. The Brent crude contract for June on London’s ICE fell 36¢ to settle at $51.60/bbl. The July contract was down 31¢ to $52.13/bbl. The May gas oil contract declined $1.75 to $465.75/tonne. OPEC’s basket of crudes closed Apr. 24 at $49.64/bbl, down 35¢.