UPDATE 1-China not main driver of oil price-Saudi Aramco

CHENGDU, April 24 (Reuters) - Soaring international crude oil prices are driven by a range of factors including speculation and depreciation of the U.S. dollar, not mainly by China demand, an executive with Saudi Aramco said on Thursday.

"It's a mistake to attribute either the recent run-up in crude oil prices or continued market volatility solely to rising Chinese demand," Mohammed S. Al-Madi, regional vice president of Saudi Aramco in Beijing, told an industry conference.

He said a massive influx of speculative money into the oil futures markets, the weak dollar and tight capacities all along the petroleum value chain all contributed to the surges in prices.

Saudi Aramco was confident that the world would have plentiful supplies of oil for many decades, he told the China Oil Traders' conference in Chengdu.

"Estimates of total resources of oil-in-place and reservoir recovery rates have increased substantially over time," he said. "More sophisticated exploration and production technologies will emerge in the future and supplies coming from non-conventional sources such as extra-heavy oil, tar sands and oil shales will also increase."

Saudi Aramco now supplied 650,000 barrels per day of crude oil to China and would aim to expand its supply to Sinopec (0286.HK: Quote, Profile, Research, Stock Buzz) alone to 1 million bpd in 2010, another company official with the Saudi firm said. (Reporting by Jim Bai; Editing by Nick Macfie)