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Oil rose more than three per cent on Thursday, pushing Brent crude to a 2015 high above $63 per barrel on increasing evidence that US production is peaking, balancing a market that has been in heavy oversupply for more than a year.
Oil prices collapsed in the six months to January, pushing Brent down more than 60 per cent to almost $45 a barrel. But the market has gradually recovered this year as much lower prices have discouraged oil exploration and production, especially in the United States.
Brent crude futures for June on Thursday hit $63.29 a barrel, the highest since December, after the previous much weaker front-month futures contract, for May, expired on Wednesday.
By 1235 GMT, June Brent was at $62.27 a barrel, down $1.05 from the previous close for June, but up sharply from Wednesday's close for May at $60.32.
US crude was at $55.29, down $1.10, after hitting a 2015 high of $56.69 on Wednesday.
US crude has been logging its strongest upswing this year as ebbing fears of an inventory overflow and renewed hedging in far-distance futures flatten the forward curve.
US crude oil production has begun to slow after several years of very sharp growth, industry data show.
The Organization of the Petroleum Exporting Countries said in its monthly report on Thursday that US oil liquids output would increase by only 740,000 barrels per day (bpd) in 2015, down from growth of 1.64 million bpd last year.
Reuters technical analyst Wang Tao told Reuters Global Oil Forum that Brent could rise towards $70 a barrel in the near term, but that a sharp downturn could happen after that.
US oil prices jumped on Wednesday after U.S. inventories built up more slowly than expected, although still to a new record. Talks between major oil producers also triggered speculation of production cuts, even though most analysts said these were unlikely.
Despite the oil price rally, the market remains oversupplied, analysts say.
"The recent bounce comes despite a surge in OPEC crude oil production in March which is likely to have been sustained in April," ANZ bank said.
