* Cold U.S. weather, weaker dollar supports oil
* Eyes on Copenhagen, doubts over major emissions deal
* OPEC won't change output-OPEC president, Saudi minister
(Updates throughout, previous SINGAPORE)
By Joe Brock
LONDON, Dec 18 (Reuters) - Oil rose above $73 a barrel on Friday, supported by the prospect of increased winter demand as a cold snap gripped the U.S. Northeast and by a weaker dollar.
The dollar <.DXY> fell from a more than three-month high on Friday, underpinning oil's gains. A weaker dollar makes commodities like oil cheaper for those holding alternative currencies.
U.S. crude for January delivery <CLc1> rose 62 cents to $73.27 a barrel by 0952 GMT. London Brent crude <LCOc1> was up 37 cents at $73.74.
"Firstly, the weaker dollar is supportive today," said Eugen Weinberg, oil analyst at Commerzbank in Frankfurt.
"The U.S. weather is having an impact as well, especially on natural gas where yesterday stocks fell more-than-expected and it is also helping oil prices."
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. [
]U.S. President Barack Obama joined other world leaders in a last push for a new global climate deal on Friday, but with no agreement on the core issue of greenhouse gas emissions they faced an enormous task.
"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," Weinberg said.
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, in comments published on Friday.
"The (meeting) will not lead to any change in production," Saudi-owned al-Hayat quoted Naimi as saying. "The current price is wanted by all. We are not alone in wanting it, but also those with alternatives and oil difficult to extract.
"And the oil price of $75 to $80 is something we all want," Naimi told the newspaper in Copenhagen, where he was attending the climate summit.
(Additional reporting by Jennifer Tan in SINGAPORE; Editing by William Hardy)