Brent crude was up 50 cents at $52.15 per barrel by 1330 GMT. U.S. light crude rose 39 cents to $49.05.

Brent crude was down 20 cents, or 0.4 percent, from the last close at $51.45 per barrel at 0647 GMT. U.S. West Texas Intermediate (WTI) crude was at $48.39, down 27 cents, or 0.6 percent.

Brent crude oil was up 30 cents at $52.12 a barrel by 0750 GMT. U.S. light crude was 25 cents higher at $49.10 a barrel. Both benchmarks have risen more than $5 a barrel since hitting five-month lows 10 days ago.

Brent crude, the global benchmark, had risen $1.20 to $52.04 a barrel by 0847 GMT (4.47 a.m. ET) and traded intraday at $52.26, the highest since April 26. U.S. crude was up $1.18 at $49.02 a barrel.

The light, sweet contract for June crude oil delivery gained 50¢ to close at $47.83/bbl on the New York Mercantile Exchange May 11. The July contract also climbed 50¢ to settle at $48.20/bbl. The natural gas price for June was up 8¢ to a rounded $3.37/MMbtu. The Henry Hub cash gas price gained 9¢ to $3.20/MMbtu on May 11. The Brent crude contract for July on London’s ICE was up 55¢ to settle at $50.77/bbl. The August contract increased 51¢ to $51.05/bbl. The June gas oil contract was $449/tonne, up $5.

International Brent crude futures were at $50.96 per barrel at 0646 GMT on Friday, up 19 cents, or 0.37 percent, from their last close. U.S. West Texas Intermediate (WTI) crude futures were at $48.01 per barrel, up 18 cents, or 0.38 percent.

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.

North Sea Brent crude oil spot prices averaged $52 per barrel (b) in April, $1/b higher than the March average and the fifth consecutive month that Brent crude oil spot prices averaged between $50/b and $55/b. EIA forecasts Brent prices to average $53/b in 2017 and $57/b in 2018. West Texas Intermediate (WTI) crude oil prices are forecast to average $2/b less than Brent prices in both 2017 and 2018.

Investors cut their bullish bets on the oil price to the lowest level since OPEC reached a deal to cut output last year, amid continued doubts about the effectiveness of that agreement.