* Brent premium to U.S. crude widens toward $7
* OPEC member shrugs off concerns about $100 oil
* U.S. crude extended losses after jobless claims data
(Updates with US weekly jobless claims, prices, OPEC)
By Claire Milhench
LONDON, Jan 13 (Reuters) - Brent oil futures climbed towards $100 a barrel on Thursday, piling pressure on OPEC to raise production to prevent high prices hurting the world economy.
But OPEC member Libya shrugged off concerns about oil at $100 saying there was no need for OPEC to add supplies.
"We think there is enough supply and there should not be any meeting at this point in time," Libya's Shokri Ghanem told Reuters. [
]European benchmark Brent <LCOc1> hit a session high of $98.66, close to a 27-month high touched the previous day.
By 1338 GMT, it was 16 cents higher at $98.28, maintaining an unusual premium to U.S. crude <CLc1>, which was down 16 cents at $91.70 a barrel.
U.S. crude futures extended their losses after weekly U.S.jobless claims unexpectedly posted their biggest jump in six months [
].Analysts have attributed Brent's strength to a combination of technical factors and investment flows, but this could fade away following the expiry of the front-month contract on Friday.
"It appears to be only a question of time until the $100-per-barrel mark will be surpassed, although it remains highly questionable whether such levels can be sustained throughout Q1 2011 from a fundamental perspective," said analysts at JBC Energy in a note.
The most bullish analysts, however, warned of a risk of a more sustained rally, which could hinder the economic recovery, if producers do not add oil to the market.
"If OPEC acts responsibly, they will increase output early this year. We do believe that in this kind of environment OPEC will be forced to raise production," said Sabine Schels, commodity strategist at Merrill Lynch.
"If OPEC is not being responsible ... we could end up in a situation similar to 2008, when we had a big rise in crude oil prices and a subsequent collapse."
In July 2008, oil vaulted to a record of nearly $150 a barrel before sinking to just above $30 in December of the same year when OPEC agreed record supply cuts, which are still in place. OPEC is not due to meet to review its policy until June.
Compared with two years ago, global inventories are relatively comfortable and OPEC has ample spare capacity.
Hefty inventories in the United States, the world's biggest oil burner, have pressured U.S. crude futures.
Demand for fuel in the northeast of the United States, the world's biggest heating oil consumer, has risen following the second major blizzard of the winter, although gasoline use has dropped as some drivers stay at home. [
]The European Central Bank kept rates at 1.0 percent as expected but the market was looking for guidance from president Jean-Claude Trichet as to when the ECB might begin tightening.
Last month euro zone inflation hit 2.2 percent -- the first time in two years that it has risen above the bank's target of just below 2 percent. (Additional reporting by Dmitry Zhdannikov and Alex Lawler; editing by Keiron Henderson)