By midday in Europe, light, sweet crude for January delivery was up 87 cents to US$51.64 (S$77.89) a barrel in electronic trading on the New York Mercantile Exchange.

The Nymex contract overnight fell US$3.73 to settle at US$50.77 after the US said its gross domestic product shrank 0.5 per cent in the third quarter, worse than previously estimated.

In London, January Brent crude rose 28 cents to US$50.63 on the ICE Futures exchange.

Slowing global economic activity has spurred corporate losses and job cuts, undermining demand for fuels to power industry and cars.

Meanwhile, plunging US home and stock prices have gutted personal wealth and hurt consumer demand.

The Standard & Poor's/Case-Shiller US National Home Price Index tumbled a record 16.6 per cent during the quarter from the same period a year ago, the lowest level since the first quarter of 2004.

The Paris-based Organisation for Economic Cooperation and Development said Tuesday that economic output next year would likely shrink by 0.4 per cent for the 30 market democracies that make up its membership, against the 1.4 percent growth prediction for 2008. That would be the worst global recession since the early 1980s.

'Commodity prices are really captive to the broader economic and financial issues,' said Gerard Burg, minerals and energy economist with National Australia Bank in Melbourne. 'It's possible we've seen a bottom, but anything over $60 is probably too high over the next few weeks.'

Last week, prices fell as low as US$48.25 a barrel in intraday trading.

But prices got a lift by expectations of a production cut by the Organisation of Petroleum Exporting Countries, which accounts for 40 per cent of global supply. The group will hold and informal meeting Saturday in Cairo and an official meeting Dec 17 in Algeria.

Venezuelan Oil Minister Rafael Ramirez said Sunday that Opec should cut oil production by 1 million barrels per day at the Cairo meeting. Opec President Chakib Khelil said Monday that if the organisation met today, a cut of 1 million barrels would not be enough to support oil prices. But Mr Khelil has said in the past that Opec needs more time to evaluate the effect of previous production cuts. The group cut output by 1.5 million barrels a day last month.

Russia, one the world's largest crude producers, may join Opec in output cuts, Energy Minister Sergei Shmatko said in New Delhi on Tuesday, Press Trust of India news agency reported.

'Very few members of Opec are content with prices this low and they really want to firm up the market,' Mr Burg said. 'We haven't heard Opec say they're happy with prices at US$50. Russia could also move in line with Opec.'

JBC Energy in Vienna noted that it's been nearly seven years since non-Opec oil exporters Russia, Norway and Mexico last made coordinated moves to cut output.

Investors will also be watching for signs of slowing U.S. demand in the weekly oil inventories report to be released Wednesday by the U.S. Energy Department's Energy Information Administration.

The report is expected to show that oil stocks rose 400,0000 barrels last week, according to the average of estimates in a survey of analysts by Platts, the energy information arm of McGraw-Hill Cos.

The Platts survey also projects that gasoline inventories rose 300,000 million barrels and distillates fell 900,000 barrels last week.

In other Nymex trading, gasoline futures rose 1.58 cents to US$1.1107 a gallon. Heating oil gained 3.10 cents to US$1.7298 a gallon while natural gas for January delivery increased 6.6 cents to US$6.452 per 1,000 cubic feet. -- AP