U.S. West Texas Intermediate crude (WTI) CLc1 was down 7 cents at $48.33 a barrel, as of 0716 GMT. The contract ended down 9 cents in the previous session after touching its lowest since the end of November at $47.90. Brent crude futures LCOc1 gained 3 cents to $51.32 a barrel, having settled down 2 cents on Monday after dipping as low as $50.85.

Compliance of the Organisation of the Petroleum Exporting Countries (OPEC) with an oil output cut exceeded a target, standing at 140% in February.

Brent crude oil was up 15 cents at $52.34 a barrel by 0900 GMT, after falling 1.7 percent on Thursday and 5 percent the day before in its biggest percentage decline in a year. U.S. crude oil was up 15 cents at $49.43 a barrel. It fell below $50 on Thursday for the first since December. U.S. crude is on track for a drop of more than 7 percent this week, its biggest weekly fall for five months.

EIA forecasts Brent crude oil prices to average $55/b in 2017 and $57/b in 2018. West Texas Intermediate (WTI) crude oil prices are expected to average about $1/b less than Brent prices in the forecast. NYMEX contract values for May 2017 delivery traded during the five-day period ending March 2 suggest that a range of $46/b to $63/b encompasses the market expectation for WTI prices in May 2017 at the 95% confidence level.

Brent crude LCOc1 was down 3 cents at $55.98 a barrel as of 1020 GMT. U.S. West Texas Intermediate crude CLc1 was flat at $53.20. Both benchmarks have traded in negative and positive territory since the start of Asia trading.

Brent crude futures dropped 47 cents, or 0.8 percent, to $55.43 a barrel as of 0749 GMT after settling 1.5 percent higher in the previous session. U.S. West Texas Intermediate (WTI) crude futures fell 47 cents, or 0.9 percent, to $52.86 a barrel after closing the previous session up 1.4 percent.

The NYMEX April natural gas futures contract settled Friday at $2.827/MMBtu, up 2.3 cents, continuing a steady rise since February 27 despite an abnormal February injection to gas storage stocks and demand hovering 7 Bcf/d below the five-year average.

Kazakhstan has for the first time shipped Kashagan crude in the form of Siberian Light blend from the Russian port of Novorossiisk, the Kazakh state pipeline company has said, amid a surge in Siberian Light exports.

The company plans to spend nearly $5.5 billion drilling in Texas, New Mexico and North Dakota. Exxon is hoping to take advantage of technological advancements and lower costs of doing business in the shale.

Oil closed at the lowest level in more than three weeks as record U.S. crude inventories were seen jeopardizing OPEC’s efforts to drain a global surplus.

Global benchmark Brent LCOc1 was up 19 cents at $55.27 a barrel at 0941 GMT, recovering some of Thursday's losses that amounted to more than 2 percent. WTI futures CLc1 traded at $52.69 a barrel, up 8 cents on the previous close.

World's top crude exporter Saudi Arabia cut April prices of light crude it sells to Asia for the first time in three months in a bid to shore up demand in an oversupplied market, trade sources said.

Benchmark Brent crude oil was down 50 cents a barrel at $55.86 by 1125 GMT. U.S. light crude was 50 cents lower at $53.33.

Light, sweet crude oil prices for April dropped modestly Feb. 24 but still settled at about $54/bbl on Feb. 24 on the New York market despite a climbing US rig count. The US oil futures benchmark has traded at $50-55/bbl for weeks.

Benchmark Brent crude LCOc1 was up 50 cents a barrel at $55.62 per barrel by 1130 GMT. U.S. light crude CLc1 was 50 cents higher at $52.84 a barrel.