* Iraq official says Iranian troops in Iraqi oilfield
* Cold U.S. weather cuts natgas stocks, supports oil
* OPEC won't change output-OPEC president, Saudi minister
(Adds details, changes dateline from previous London)
NEW YORK, Dec 18 (Reuters) - Oil rose above $73 a barrel on Friday, after an incursion by Iranian troops into an Iraqi oilfield signaled tensions between two major crude exporters, while a firming dollar showed investors remain wary of risky commodities.
U.S. crude futures <CLc1> for January delivery briefly surged as high as $74.69 a barrel earlier Friday, on cold U.S. weather that may boost fuel demand, and after reports that Iranian soldiers crossed into Iraq with tanks and laid claim to an oilfield there.
Oil prices later pared most of the gains as the dollar surged to a new 3-1/2-month high against the euro, as investors cut their risk and sought safe haven assets such as U.S. Treasury bonds. [
]Iraq's Deputy Interior Minister said Iranian troops were still occupying an oil well in a southern Iraqi oilfield. Iraq hasn't taken any military action, but officials alleged "repeated" Iranian incursions into its territory this week. [
]"The Iraq-Iran issue is bringing some nervousness in the market but I think there is a very high possibility that there is nothing in the story," said Eugen Weinberg, oil analyst at Commerzbank in Frankfurt.
"If there is some sort of conflict, then the price reaction is too small but if it is nothing the reaction is too high," Weinberg added.
U.S. crude for January delivery <CLc1> rose 38 cents to $73.03 by 11:39 a.m. EST (1639 GMT). London Brent crude <LCOc1> was down 15 cents at $73.22.
A cold snap gripping the U.S. Northeast, the world's top heating oil market, continued to support oil prices, but some analysts said that Iran-Iraq skirmishes were unlikely to disrupt oil markets for long.
"Cold temperatures and Iran worries put the bulls on ice," said PFGBest energy analyst Phil Flynn, in a note to clients.
"Is this chilly development for real?," Flynn added.
Amid cold weather, U.S. natural gas inventories fell for just the second time this winter season, down 207 billion cubic feet, according to the U.S. Energy Information Administration. [
]OPEC MEETING
The Organization of the Petroleum Exporting Countries (OPEC) will not change output targets when it meets in Angola on Dec. 22, the group's president said on Friday. [
]"Oil prices are trading at $70 to $75 per barrel which is the level our group has defended. I believe we will maintain the decisions that were taken in the past about output quotas and keep targets unchanged," Jose Botelho de Vasconcelos told Angolan Radio Ecclesia. [
]That view was echoed by the group's most influential oil minister, Saudi Arabia's Ali al-Naimi.
"The (meeting) will not lead to any change in production," Saudi-owned al-Hayat quoted Naimi as saying. "And the oil price of $75 to $80 is something we all want," Naimi told the newspaper in Copenhagen, where he was attending the U.N. climate summit. [
]U.S crude oil is expected to rise to an average of $76.40 a barrel in 2010 and $82.70 in 2011, a Reuters poll showed, as global economic recovery solidifies and the demand for fuel begins to soak up available supply. [
]World leaders including U.S. President Barack Obama met in Copenhagen on Friday to push for a new global climate deal, but they appeared far from agreement on the core issue of greenhouse gas emissions. [
]"If there is no strong binding agreement the market might take it as a signal that fossil fuel demand will remain as it is, which helps prices," Commerzbank's Weinberg said. (Reporting by Joshua Schneyer and Edward McAllister in New York and Joe Brock in London; Editing by Marguerita Choy)