Iraq will become 3 independant states, it becomes more and more  inevitable - both US and local interests intersect on this.
Classical Balkanisation (or Romanisation maybe) in action. THE problem are the Kurds which by themself are THE problem of Turkey. Of course there will be a lot of blood to spill on old-style oil oooops... border issues, but the alternative is even more bloody.

Anyhow forget about oil form there in the next XXX years. Such young, unstable quasistates are uncapable of providing basic security, not to mention prosperity for their citizens or businesses. What they produce is mainly poverty and terroism.

If memory serves correctly, Iran has a significant Kurdish population that they would prefer not to get to 'uppity'.