Having documented why IMO oil is a spec bubble, I agree with BHS that seasonality suggests a strong Sept.
Still, I think the Katrina situation was the catalyst to form a "blow off" tops in energy markets (oil, NG, HO etc), which IMO should hold for the intermendiate term.
Remember that the $60+/bar oil costs ON AVERAGE $6/barrel for non-OPEC producers and $1.5/bar for OPEC producers.
Although I doubt that OPEC will revert to its $25/bar target, now it has realised that the sky won't fall if oil costs 3x higher. Maybe a $35/bar will be the intermediate-term target, unless/until new developments cause a oil GLUT (quite possible imo).