* Unexpected distillate stock increase sends oil to below $80
* More Chinese tightening: higher bank reserve requirements
* Winter conditions seen milder this week (Updates prices)
By Alejandro Barbajosa
SINGAPORE, Jan 13 (Reuters) - Oil fell more than $1 on Wednesday to below $80 a barrel on an unexpected rise in U.S. distillate stocks despite a surge in demand during a severe northern hemisphere winter.
Prices also declined after China surprised world markets by raising banks' cash reserve requirements, the latest step towards tightening monetary policy, which raised concerns that such cooling-off measures could dampen energy demand.
U.S. crude for February delivery <CLc1> fell as much as $1.16 a barrel to $79.63, the lowest since Jan. 4, retreating further from 15-month highs near $84 on Monday. It was trading down $1.08 at $79.71 a barrel by 0759 GMT.
London Brent crude for February <LCOc1>, which expires on Thursday, lost 79 cents to $78.51 a barrel.
"The market is trading in the $75-$85 range, and if we are getting warmer weather, higher inventories and Chinese monetary policy is changing, then we should now try the lower side of that range," said Keichi Sano, general manager of research at SCM Securities in Tokyo.
China, the world's No. 2 oil consumer, raised the proportion of deposits that banks must hold in reserve by 0.5 percentage point in a move to stem inflation threats.
Concerns that Chinese tightening could moderate the global economic recovery unnerved financial markets, denting stocks, higher-yielding currencies and commodities. [
]Gold, which slid more than 2 percent the previous day -- the largest one-day percentage drop since Dec. 17 on China's tightening moves -- was flat on Wednesday. [
]"The Chinese economy is an extraordinary buyer of commodities and energy, so people are very concerned about its growth pace," Sano said.
HIGHER INVENTORIES
Distillate stockpiles in the United States rose by 3.6 million barrels in the week ended Jan. 8, the American Petroleum Institute (API) said on Tuesday, versus forecasts for a 1.8 million-barrel drop.
The rise came despite freezing weather in the past two weeks. And a weather pattern change during the next several days will end the very cold weather across central and eastern United States, DTN Meteorlogix said, reducing heating demand. [
]Crude inventories gained 1.2 million barrels as imports increased, while gasoline stocks soared by a hefty 6.8 million barrels, compared with expectations for a 1.2 million-barrel increase.
Government inventory data from the Energy Information Administration (EIA) will be published at 1530 GMT.
Deutsche Bank said in a research note it expected fundamentals of oil supply, demand and inventories -- which remain well above five-year averages -- to assert heavier influence on prices in 2010, tempering any price rallies.
The EIA, in a monthly report on Tuesday, cut a previous forecast for world oil demand growth in 2010 by 20,000 barrels per day (bpd), although it still predicts demand growth of 1.08 million bpd versus last year. [
] (Editing by Ramthan Hussain and Ed Lane)