* Saudi's Jan supply cut to majors boosts sentiment
* Expectations of deeper supply cut at next week's OPEC meet
* IEA monthly report due later likely to signal weak demand (Updates prices, adds quote)
By Jennifer Tan
SINGAPORE, Dec 11 (Reuters) - Oil extended gains to trade above $44 a barrel on Thursday, after rising more than 3 percent overnight on signs that top oil exporter Saudi Arabia has slashed January supplies ahead of next week's OPEC meeting.
The producer cartel is expected to agree more output cuts to keep oil away from four-year lows hit last week, as it battles falling demand likely to be underlined in a monthly report from the International Energy Agency due later on Thursday.
Indicators on the health of the U.S. economy, such as weekly jobless claims due later in the day, could make grim reading for Wall Street and imply a further weakening in demand from the world's top oil consumer.
U.S. crude for January delivery <CLc1> was up 82 cents at $44.34 a barrel by 0625 GMT, after surging $1.45 to settle at $43.52 a barrel on Wednesday.
London Brent crude <LCOc1> was up 42 cents at $42.82.
"The huge price swings overnight -- you rarely see moves of this magnitude -- prove how volatile the whole energy complex is at the moment," said Peter McGuire, managing director of Commodity Warrants Australia.
"This will go on until OPEC collaborates and works cohesively together -- the grouping is very fractured at the moment."
Saudi Arabia told some of its biggest customers it was reducing supplies substantially next month in a move that could bring the kingdom's output below its implied OPEC target of 8.47 million barrels per day. [
]The cuts imply that the OPEC kingpin expects the cartel, which has already agreed to cut about 2 million bpd of production since September, to agree a further reduction in supplies at its Dec. 17 meeting.
Russia, which will attend the OPEC meeting as an observer amid calls from some members for Moscow to join in output curbs, said on Wednesday it would present its own proposal at the OPEC meeting. [
]"These are linked to measures to protect our national interests and to provide, in our view, fairer and more stable rules on the oil market," Energy Minister Sergei Shmatko said.
A U.S. Energy Information Administration report this week forecasting the first contraction in world oil demand year-to-year since 1983 added to expectations that OPEC would deepen cuts as it reacts to the more than $100 a barrel fall in prices since July. [
]Rising stockpiles in the world's largest energy consumer also reinforced the dismal outlook, with the U.S. Energy Information Administration saying it sees U.S. gasoline demand falling faster this year and next than in any two-year period since 1979-1980. [
]The U.S. Labor Department will release first-time claims for jobless benefits for the week ended Dec. 6 later on Thursday. Economists in a Reuters poll forecast a total of 525,000 new filings compared with 509,000 in the prior week.
Any signs of a deepening recession in the world's largest economy could send U.S. stocks into a tailspin.
"Oil will continue to take cues from Wall Street, and there're always problems on Wall Street," McGuire said.
Meanwhile, U.S. President-elect Barack Obama will nominate Steven Chu, a Nobel physics laureate and advocate of alternative energy research, as his energy secretary.
Chu was an early advocate for finding scientific solutions to climate change and had expertise in the development of carbon-neutral sources of energy. [
]This could possibly trim longer term assumptions for U.S. crude prices, said ANZ senior commodities strategist Mark Pervan.
"Also, the long-term outlook for oil prices is not so much about U.S. demand, but more about China and India demand," he added. (Editing by Sambit Mohanty) (jennifer.tan@thomsonreuters.com; +65-6417 4679; Reuters Messaging: jennifer.tan.reuters.com@reuters.net)