The Oil Ministry is offering a deal for two oil fields to ExxonMobil and PetroChina in an effort to jumpstart a long-delayed, multi-billion dollar water project necessary to maintain pressure in more than a half dozen vital oil fields in southern Iraq.Exxon was once involved in the Common Seawater Supply Project (CSSP) – from 2009-2011 it was slated to lead a consortium of foreign oil companies to manage the project – though disputes over cost estimates and Exxon’s 2011 contracts with Ir…