Oil prices on trading on Monday after growing up in lower Friday on rumors of the intention of the international agency Standard & Poor's to lower the ratings of the eurozone countries. Oil price increase is largely due to technical purchases of oil futures, which trade over the past week, noticeably down in value because of the appreciated dollar and because of an unexpected increase in U.S. commercial inventories of crude oil and petroleum products.

Dollar since the beginning of the day slightly decreased against the euro and other currencies, further ensuring the conditions for speculative purchases of oil and other commodity assets whose prices are set in U.S. currency. Thus, the dollar index for the six major world currencies fell slightly below the 81.5 points after the day on January 13th 2012. This figure peaked in September 2010. - 81.515 points.

Price of Brent crude on Monday morning growing up more actively than the price of crude oil WTI, which is due to the forthcoming completion of the contract period for the futures Brent for February delivery while maintaining the fears of supply disruptions of oil from the Persian Gulf if Iran will make the blockade of the Strait of Hormuz.

The February futures contract for WTI crude oil during today's trading rose to 99.80 dollars a barrel.