Crude prices climbed in Asian trade today as a weaker greenback and strong Chinese crude imports data buoyed markets, analysts said.
New York's main contract, light sweet crude for November delivery, gained 71 cents to $83.72 a barrel.
Brent North Sea crude for delivery in November advanced 53 cents to $85.17 on its last trading day.
A slumping US dollar was fuelling recent rallies in crude prices, said Jason Feer, Asia-Pacific vice-president and general manager of Argus Media energy market analysts in Singapore.
"The dollar's been falling," he said. "I think lately that's pretty much been the reason."
The euro was trading at $1.4064 against the US dollar in early trade today, up from $1.3958 in New York yesterday.
Strong Chinese crude imports also lent impetus to the markets, said Commerzbank analyst Carsten Fritsch.
"China imported a record volume of crude oil of 5.67 million barrels a day in September, a year-on-year rise of 35 per cent," he said, describing the figures as "more robust."
OPEC is expected to maintain official oil production quotas at its ministerial meeting in Vienna today but Feer said this would have little impact on prices as it was already widely anticipated in the markets.
