EXHIBIT 10.4 SECOND AMENDMENT TO PURCHASE AND SALE AGREEMENT This Second Amendment to Purchase and Sale Agreement (the "Amended Agreement") is dated April 23, 2004 and is by and among EDWARD MIKE DAVIS, an unmarried man ("Davis"), EDWARD MIKE DAVIS,...Purchase and Sale Agreement • May 10th, 2004 • Delta Petroleum Corp/Co • Crude petroleum & natural gas
