At 2130 IST today, West Texas Intermediate (WTI) crude for September delivery added 84 cents at USD 44.33 a barrel compared with yesterday's closing level.
European benchmark Brent North Sea crude for October rose 65 cents to USD 46.69 per barrel.
Both contracts traded far above the three-month lows forged early last week, when prices had tanked into a bear market - losing 20 per cent from June peaks.
The Organisation of Petroleum Exporting Countries (OPEC), whose 14 nations pump one third of global oil, on Monday called an informal meeting that will take place on the sidelines of the International Energy Forum in Algeria in late September.
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They powered even higher yesterday after Saudi Arabia's powerful oil minister hinted that producers could agree to limit output.
Saudi oil chief Khalid al-Falih was reported as saying that the informal OPEC meeting would be an occasion for producers to discuss "any possible action".
Prices jumped more than four per cent in reaction to the comments, which were seen as a positive development in a market grappling with a supply glut.
"The latest trigger behind the rally has been attributed in the media to comments from Saudi Arabia's minister, who on Thursday said his country -- which is the largest OPEC oil producer -- could participate in co-ordinated action to help balance the crude oil market.
"I am not sure if this is the main reason, for prices had already bounced last week.
"What's more, similar promises were made earlier this year and no action taken. Yet oil prices were able to march on regardless."
A monthly report from OPEC also showed Saudi Arabian oil production was at nearly 10.5 million barrels per day in July -- a record high, above peak levels seen the same time last year.
OPEC meetings earlier this year failed to agree on any production ceiling, as key producers preferred instead to fight for market share in a Saudi-led strategy.
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