Iraq, alas, will fall prey to the so-called "oil curse." Revenue will accrue to the government -- not the people -- and, as in Iran, Venezuela, Saudi Arabia, etc., will be used to advance the goals of whoever is in power at the moment.
The United States escaped the curse [for the time being] because Americans have the rights to the minerals which lie beneath their property. I'm not sure that there are any other countries in the World with those same rights.
Reportedly the Iraqi minister of finance is setting up a system to distribute 25 percent of oil profits directly to the Iraqi people. This has been done in some of the Gulf states for years.
http://theiraqidinar.com/news/araji-surplus-of-oil-revenues-to-be-distributed-on-iraqi-people-171533