XTO Energy Increases Oil Price Hedges for 2010

FORT WORTH, Texas, June 30 /PRNewswire-FirstCall/ -- XTO Energy Inc. (NYSE:
XTO) today updated its price hedges for future sales of oil production in
2010. The company has now hedged approximately 95% of its projected 2010 oil
production. The following table reflects the Company's current outstanding
commodity swap transactions:

PRODUCTION: Mcf or Bbls NYMEX Price Natural Gas
per Day per Mcf or Bbl Mcfe Price

2009 Natural Gas
Jul - Dec* 1,745,000 $ 8.79

Oil
Jul - Dec** 62,500 $ 117.11

Total Natural Gas
Equivalent
Jan - Dec 2,120,000 $ 10.69

2010 Natural Gas
Jan - Dec 730,000 $ 8.67

Oil
Jan - Dec 70,000 $ 95.70

Total Natural
Gas Equivalent
Jan - Dec 1,150,000 $ 11.33

* Includes swap agreements for 1,273,000 Mcf per day which were early
settled and reset at current market prices. The price shown is the
price that will be used for cash flow hedge accounting purposes and
has been reduced for transaction costs related to the early
settlements. The weighted average cash settlement contract price
for all contracts is $6.35 per Mcf.

** Includes swap agreements for 57,000 Bbls per day which were early
settled and reset at current market prices. The price shown is the
price that will be used for cash flow hedge accounting purposes and
has been reduced for transaction costs related to the early
settlements. The weighted average cash settlement contract price for
all contracts is $58.64 per Bbl.

"We are encouraged by our activities in the Bakken Shale and the additional
oil hedges underpin these strong economics," stated Bob R. Simpson, Chairman
and Founder. "Even in these difficult economic times, our geo-technical team
continues to unlock the power of last year's acquisitions and position XTO for
a strong 2010."

XTO Energy Inc. is a domestic natural gas producer engaged in the acquisition,
exploitation and development of quality, long-lived oil and natural gas
properties in the United States.

This release can be found at http://www.xtoenergy.com.

This document contains 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. Forward-looking statements include estimates and give
our current expectations or forecasts of future events. Although we believe
our forward-looking statements are reasonable, they can be affected by
inaccurate assumptions or by known or unknown risks and uncertainties.
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.

SOURCE XTO Energy Inc.

Louis G. Baldwin, Executive Vice President & Chief Financial Officer, or Gary
D. Simpson, Senior Vice President Investor Relations & Finance,
+1-817-870-2800, both of XTO Energy Inc.