XTO Energy Increases 2005 Production Growth Guidance To 24-26%; Increases Development Budget To $935 Million and Updates Performance Guidance FORT WORTH, Texas, April 20 /PRNewswire-FirstCall/ -- XTO Energy Inc. (NYSE-XTO) has updated operational and financial guidance for the remainder of 2005 based on current expectations for increased production, expenses and other parameters resulting from ongoing operations and development budget activities. These statements are forward looking, as described in the final paragraph of this release, and actual results may differ materially. These estimates do not include derivative fair value gains and losses, the effects of possible future acquisitions or divestitures, or unforeseen events that may occur after this release. Production The Company is increasing guidance for annual production volume growth to 24-26% for 2005. The estimated ranges of average daily production going forward are: Six Months Q2 Q3 - Q4 Natural Gas (Mmcf) 1,000 - 1,015 1,040 - 1,070 NGL (Mbbl) 8.0 - 9.5 8.0 - 9.5 Oil (Mbbl) 34 - 35 34 - 35 Total Gas Equivalent (Mcfe) 1,252 - 1,282 1,292 - 1,337 Development Budget The Company is increasing the 2005 budget for development events from $850 million to $935 million to accommodate recent acquisitions and additional workover and drilling activities. Pricing Differentials For the year, the Company's realized natural gas prices are expected to be $0.60 to $0.70 below the NYMEX Henry Hub price, assuming a $6.50 per Mcf gas price and before consideration of hedging activities. Natural gas liquids prices are expected to be about 55% to 65% of the average NYMEX oil price. The Company's realized oil prices should be about $3.00 to $4.00 below the average NYMEX price, assuming a $45.00 per Bbl oil price and before consideration of hedging activities. Expenses The following table presents the Company's expected expenses per Mcfe for the remainder of 2005 assuming a $6.50 per Mcf NYMEX gas price and a $45.00 per Bbl NYMEX oil price: Expense ($/Mcfe) Q2 - Q4 Production 0.74 - 0.78 Taxes, transportation and other 0.53 - 0.57 Exploration 0.02 - 0.05 Depreciation, depletion and amortization 1.25 - 1.35 Accretion of asset retirement obligation 0.02 - 0.03 General and administrative (a) 0.19 - 0.22 Interest 0.30 - 0.32 (a) Excludes stock-based incentive compensation Hedging The Company's hedging positions for natural gas and oil are: Mcf or Bbls NYMEX Price per Day per Mcf or Bbls Natural Gas * Apr-Dec 2005 260,000 $5.97 Jan-Dec 2006 10,000 $7.78 Oil Apr-Dec 2005 15,000 $38.37 * Includes 10,000 Mcf per day of hedges acquired in the Antero Resources acquisition, at their average April 1, 2005 mark-to-market NYMEX price of $7.78 per Mcf. Income Tax The Company projects a 35% effective tax rate, with up to 40% of that amount expected to be currently payable. XTO Energy Inc. is a domestic energy producer engaged in the acquisition, exploitation and development of quality, long-lived oil and natural gas properties in the United States. Its properties are concentrated in Texas, New Mexico, Arkansas, Oklahoma, Kansas, Wyoming, Colorado, Alaska, Utah and Louisiana. This release can be found at http://www.xtoenergy.com/. Statements made in this news release, including those relating to commodity prices, annual production volume growth, average daily production, development budget expenditures, pricing differentials, expenses and income taxes are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements are based on assumptions and estimates that management believes are reasonable based on currently available information; however, management's assumptions and the Company's future performance are subject to a wide range of business risks and uncertainties and there is no assurance that these goals and projections can or will be met. Any number of factors could cause actual results to differ materially from those in the forward-looking statements, including, but not limited to, the timing and extent of changes in oil and gas prices, changes in underlying demand for oil and gas, the timing and results of drilling activity, the timing of production, treatment and transportation facility installations, the availability of drilling equipment and technical personnel, curtailments by third-party pipelines, changes in interest rates, higher than expected production costs and other expenses and failure to close any pending acquisitions. The Company undertakes no obligation to publicly update or revise any forward-looking statements. Further information on risks and uncertainties is available in the Company's filings with the Securities and Exchange Commission, which are incorporated by this reference as though fully set forth herein. DATASOURCE: XTO Energy Inc. CONTACT: Louis G. Baldwin, Executive Vice President & Chief Financial Officer, 817-870-2800, or Gary D. Simpson, Senior Vice President, Investor Relations & Finance, 817-870-2800, both of XTO Energy Inc. Web site: http://www.xtoenergy.com/

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