Brent crude oil prices fell for a second day Friday, was recorded in September to the 2nd largest cumulative decline as the dollar rose and traders worried about slowing Chinese demand for crude oil and U.S. investor demand weakened. 

In the United States Federal Reserve Board (Fed / FED) Chairman Ben Bernanke announced Wednesday plans to reduce currency thorn strategy, U.S. crude fell three days. U.S. crude oil futures fell below the 50-day and 100-day moving average, though U.S. stocks fell after the stabilization in the previous two days. Brent two days tumbled about 5%. 

"Without the Fed quantitative easing and strong Chinese demand, oil prices strong theme dissipate," Price Futures Group energy analyst Phil Flynn said. 

Brent crude oil fell more than $ 2, hovering just above $ 100, then pared losses, fell $ 1.24 to settle at $ 100.91 a barrel. 

U.S. crude oil fell sharply in early trading in recent months, more than $ 2 to settle at $ 93.69, down $ 1.45. Month U.S. crude fell $ 1.52 to settle at $ 93.63 a barrel. 

Brent and U.S. crude trading volume slightly above its 30-day average. 

Brent premium against U.S. crude narrowed to $ 7.22, fell to $ 6.54 intraday lows, this is November 2011 to the narrowest. 

Fed Chairman Ben Bernanke plans to tighten the economic stimulus policies, the dollar rose, the dollar-denominated oil for holders of other currencies more expensive for investors. 

U.S. Commodity Futures Trading Commission (CFTC) said on Friday that as of June 18 one week, money fund managers to increase U.S. crude oil and options net long positions.