MOSCOW, August 17 (RIA Novosti) - Crude oil producer Slavneft, ranked among Russia's top ten oil companies, posted a 9.2% drop, year-on-year, to $483.56 million in its 2008 U.S. GAAP net profits.

The crude producer's revenue increased 18.4% to $7.26 billion in the reporting period.

Earlier reports said Slavneft's net profit calculated to Russian Accounting Standards reached 6.18 billion rubles ($194.5 million) last year, up fivefold against the 2007 index.

Slavneft is co-owned by Gazprom Neft, the oil arm of Russian energy giant Gazprom, and Russian-British joint oil venture TNK-BP.