Refinery Expansion Act of 2005 - Amends the Internal Revenue Code to: (1) revise the tax deduction for certain liquid fuels refinery property to allow expensing of the entire cost of such property if the property allows for a production capacity increase of five percent or more on an average daily basis; (2) allow, in lieu of such expensing deduction, a five-year recovery period for the depreciation of such refinery property; (3) allow a seven-year recovery period for the depreciation of certain oil and gas distribution lines; and (4) allow a five-year recovery period for the depreciation of certain petroleum storage facilities.