* Several firms halt output in Libya [
]* Concern other big producers could suffer supply outages
* Coming Up: U.S. Jan existing home sales data, API data
(Adds background, quotes, updates prices)
By Zaida Espana
LONDON, Feb 23 (Reuters) - Oil prices climbed on Wednesday as turmoil in Libya fuelled fears that unrest could spread to other oil-producing nations and choke supplies.
Brent crude futures <LCOc1> climbed $2.91 to $108.68 a barrel by 1415 GMT.
Futures on U.S. light crude, also known as WTI, <CLc1> were $1.06 firmer at $96.48 a barrel at the same time, the highest level since October 2008.
Prices gained support as Austria's OMV <OMVV.VI> said on Wednesday it might be heading for a full production shutdown in Libya; adding to earlier comments by Total <TOTF.PA>, Repsol <REP.MC>, Eni <ENI.MI> and BASF <BASFn.DE> that they were either slowing or stopping output.
"If we lose Libyan production, then you will have to replace around 1.6 million barrels per day of very good quality crude, which would introduce logistical implications and have a cost," Credit Agricole CIB analyst Christophe Barret said.
The disruption in Libya, which pumps 1.6 million barrels per day (bpd) or nearly 2 percent of global supply [
], marks the first cut in oil supplies related to the recent wave of protests in North Africa and the Middle East."People are scared to lose a producer that pumps very good quality crude. Companies are cutting production at the fields and there are difficulties at the port, so products trade is also disrupted," he added.
The disruption could push up Brent to a greater extent because of its tighter availability and geographical proximity to the unrest, Commerzbank analysts said.
Governments across the world moved to send planes and ships to evacuate citizens from Libya, whose leader Muammar Gaddafi has vowed to crush a revolt against his 41-year rule. [
]Between 300,000-400,000 barrels per day (bpd) of Libyan output has been shut down, according to Reuters calculations [
], while Barclays analyst Amrita Sen said in a note that around 1 million bpd of Libyan crude oil production is likely to have been shut in.Focus was also on top exporter Saudi Arabia, where ruling King Abdullah unveiled a package of benefits worth billions of riyals to mark his return on Wednesday after months of medical treatment abroad. [
] [ ]Jittery investors are worried about further supply disruption if protests spread in the country, which supplies around 10 percent of the world's oil and holds most of the world's spare capacity. On Tuesday, Saudi stopped short of pumping more oil to calm markets, saying prices were driven by fear. [
] <^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Middle East unrest graphic http://r.reuters.com/nym77r Analysis on long-term impact on Libyan oil: [ ] Factbox on Libyan oil and gas: [ ] Libyan oil map: http://r.reuters.com/jem28r Interactive factbox http://link.reuters.com/puk87r ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^>
OIL SUPPLIES EYED, U.S. STOCKS AWAITED
While protests in Saudi Arabia have so far been low key, Shi'ites in neighbouring Bahrain are demonstrating against the Sunni-led government, fanning worries this could spill over to the Shi'ite minority in Saudi's oil-producing eastern province.
"The importance of Bahrain is perhaps being underplayed currently. While not a major oil producer, Bahrain's impact on the oil market reverberates through its importance in Saudi Arabia," Barclays Capital analysts Helima Croft and Amrita Sen said in a note.
The International Energy Agency's (IEA) executive director Nobuo Tanaka said prices above $100 per barrel for the rest of the year could drag the global economy back into a repeat of the 2008 economic crisis. [
]Analysts said U.S. light crude futures remained well supported following the roll of the contract, although a potential build-up of weekly U.S. crude oil stockpile data due later could pressure prices. [
]"The fact that WTI has risen further is mainly related to the contractual rollover, as the new front month contract was $2 higher than the expiring contract," Commerzbank analyst Carsten Fritsch said.
On the data front, investors await the January reading of existing U.S. home sales at 1500 GMT, while U.S. inventory data from both American Petroleum Institute and EIA will be delayed a day after Monday's Presidents Day holiday.
Analysts polled by Reuters expect crude inventories in the U.S. rose for the sixth consecutive time last week, ahead of the API report due at 2130 GMT and the EIA on Thursday. [
] (Additional reporting by Francis Kan in Singapore; editing by Jane Baird)