* OPEC cuts output unexpectedly by 520,000 bpd
* IEA cuts 2008, 2009 global oil demand growth forecasts
* U.S. data to show sharp falls in crude, fuel stocks
(Adds analyst comment, updates prices)
LONDON, Sept 10 (Reuters) - Oil rose on Wednesday in response to a surprise decision by OPEC to cut production by about half a million barrels a day.
The Organization of the Petroleum Exporting Countries had been expected to keep existing output allocations but some members had voiced concern about a growing surplus of oil on the market as high prices have impacted demand.
U.S. crude <CLc1> was up 9 cents at $103.35 a barrel by 1236 GMT. On Tuesday, it fell to a five-month low of $101.74.
London Brent crude <LCOc1> was up 28 cents at $100.62, after a fall below $100 on Tuesday for the first time since April.
"We think this is a serious deal for a real cut...In this market, direction matters and this is a turn," UBS economist Jan Stuart said in a report.
OPEC lowered its output targets to 28.8 million barrels per day (bpd), a move the group's president said would reduce output by 520,000 bpd. [
]"Since the market is over-supplied, the conference agreed to abide by September 2007 production allocations (adjusted to include new members Angola and Ecuador and excluding Indonesia and Iraq), totalling 28.8 million bpd," it said in a communique. [
]The market drew additional support from reports of an earthquake that struck southern Iran near Bandar Abbas, site of a major Iranian oil refinery. [
]Oil has fallen about 30 percent from a peak of $147.27 a barrel on July 11, partly due to a fall in demand, a stronger U.S. dollar and shifts in investment flows. "There were enough surprises in Vienna to give some support to the bullish camp, the question now is whether there is still enough financial interest to play the game," said Olivier Jakob, of energy analysts Petromatrix.
IEA
Price gains were limited as the International Energy Agency lowered its 2008 world oil demand growth forecast by 100,000 bpd due to the impact of weaker economic conditions and high prices. [
]The IEA, adviser to 27 industrialised countries on energy policy, also trimmed its forecast for 2009 global demand growth by 40,000 bpd to 890,000 bpd.
The market is now likely to turn its focus to U.S. weekly oil statistics due out later on Wednesday. [
]Analysts in a Reuters poll expect U.S. government oil inventory data to show a sharp fall in crude oil and refined product stocks due to production and import disruptions caused by Hurricane Gustav.
Crude oil stocks in the United States were seen falling 4.4 million barrels in the week to Sept. 5. Gasoline stocks were seen down by 4.2 million barrels and distillates by 2.7 million barrels.
Hurricane Ike's progress toward the U.S. Gulf of Mexico has kept most oil and natural gas production shut in for a second week. Its path has recently shifted south and west of the biggest concentration of production platforms, aiming instead at the Texas coast. [
]. (Reporting by Ikuko Kao, Matthew Robinson, Jane Merriman in London and Angela Moon in Seoul and Jonathan Leff in Singapore; Editing by Anthony Barker)