ceyda, here's an article talking about the Brent/WTI "out of wackness" I mentioned earlier.
http://www.marketwatch.com/news/sto...33-6CB3-4E0C-BBF9-C941D9B7D9BB}&dist=hplatest
Here's a brief breakdown of the article:
WTI could be undervalued.
Brent price is the WTI+freight costs.
Stock analysts of oil companies could be estimating revenues too low.
... and it's a pretty good article so read it
Enjoy!