* U.S. refinery utilization drops to 25-year low
* Gasoline inventories jump more than expected
* U.S. proposes to curb proprietary trading at banks (Updates prices)
By Alejandro Barbajosa
SINGAPORE, Jan 22 (Reuters) - Oil topped $76 on Friday, up a few cents from one-month lows after data showed refiners in top consumer the United States processed the least crude in decades, reacting to a fuel demand slump.
Proposals by U.S. President Barack Obama to cut proprietary trading at large banks sent Asian stock markets and commodities tumbling. Japan's benchmark index lost more than 2.5 percent, and the dollar slipped to its lowest in five weeks against the yen.
U.S. refinery utilization, the proportion of total capacity at which refiners operate, fell 2.9 percentage points to 78.4 percent last week, a government report showed on Thursday. That was the lowest since the 1980s, barring occasional periods of hurricane-related disruptions, Department of Energy data showed.
"For the refinery run rates, it's a bit on the surprise side," said Serene Lim, a Singapore-based oil analyst at ANZ. "At this time of year they shouldn't be dropping that much. With low demand, refiners don't find an incentive to produce more."
March-settlement U.S. crude <CLc1> touched $75.62 a barrel, the lowest intraday price since Dec. 23, and was trading up 8 cents at $76.15 by 0820 GMT. Prices have dropped almost $8 from a 15-month low of almost $84 on Jan. 11. London Brent crude for March <LCOc1> rose 21 cents to $74.79.
U.S. regulator Commodities and Futures Trading Commission (CFTC) on Jan. 14 announced proposals to put a cap on the size of positions dealers can hold, aiming to limit speculation. Most traders considered the proposals to be not as strict as feared.
But stricter rules to limit banks' trading activities proposed yesterday put pressure on the CFTC to take tougher action, Lim said.
CHINA GROWTH
Prices were also under pressure from concerns that China would take further measures to temper its booming economy, Lim said, after China on Thursday reported fourth quarter growth of 10.7 percent, its first double-digit figure since 2008. [
]"Any efforts by the Chinese government to slow the economy would affect demand for raw materials," Lim said.
China's apparent demand for oil products will grow by about 4 percent this year, the National Energy Administration (NEA) said on Friday, a slower pace than the 6.3 percent growth for 2009, according to Reuters calculations based on official figures. [
]NEA also estimated that an annual total of 20 million tonnes of refining capacity, or 400,000 barrels per day (bpd), will be added this year, adding to a supply surplus of the main refined oil products.
South Korea, the world's fifth-largest crude buyer, imported 5.9 percent less crude in December from a year earlier, state-run Korea National Oil Corp said on Friday. [
]DEMAND DROP
U.S. gasoline inventories rose a larger-than expected 3.9 million barrels the week ended Jan. 15, despite the reduced operating rates at refineries. Total demand for oil products over the past four weeks slid by 1.8 percent from a year earlier.
Demand for distillates, a fuel category that includes heating oil and diesel, plunged 6.8 percent from a year earlier following the return of warmer weather to the U.S. Northeast last week.
Temperatures in the region were forecast to stay above normal through Tuesday next week, according to Telvent DTN. And analysts said even another cold snap following unseasonably cold conditions in late December and early January would have a limited and temporary effect on prices.
"While a return to cold conditions in the U.S. next week should be enough to trigger a brief rebound to $80, we must remember that the clock is ticking on the weather trade and that demand typically falls by 1-2 million barrels per day in the second quarter," JP Morgan said in an e-mailed note. (Editing by Clarence Fernandez)