WikiWealth

"The general rule has been that 50 days of forward cover is very bullish for oil prices, 53 days is bullish, 57 days bearish and 60 days very bearish. The IEA feels that this is probably a turning point in the demand recovery or we are very close to it."

Source:http://www.commodityonline.com/futures-trading/technical/Crude-Oil:-Gain-on-recovery-hopes-may-rally-to-$70-10964.html