Firstly, it will take many years and billions of dollars before Iraq can begin to ship oil in the quantities that could affect world price. Meanwhile, the continuing fighting against our military and the sabotage of oil producing equipment cancels any type of foreign investment that is needed. Iraq does not have, nor will it for many years, an effective justice system under which long-term oil contracts can be arbitrated. Companies would be insane to invest there. Practically speaking, there is as much chance that Iraq will dissolve into civil war as there is it becoming an American friendly democracy.
Secondly, it is more than likely that an independent Iraq would re-join OPEC. OPEC will continue to establish official production ceilings and the US, UK and Russian oil companies will gladly fall into OPECs price lines (as they always do). The price of oil will continue to be in the hands of OPEC and prices in the US will not be reduced.
So the oil companies want to lose the war? I thought they wanted to win the war. Which is it?
Secondly, it is more than likely that an independent Iraq would re-join OPEC.
How do you know this?