Quarter Ended

Nine Months Ended

September 30

September 30

Operating Data

2007

2006

2007

2006

Net Natural Gas Sales (Mcf/day)

Total Natural Gas

191,294

197,742

198,766

199,245

Gas Price ($/Mcf)

Average Gas Price

$

5.46

$

5.81

$

6.12

$

6.29

Net Liquids Production (Bbl/day)

Crude & Condensate

Total Crude & Condensate

13,290

16,535

14,767

18,125

Plant Products

Total Plant Products

3,875

4,491

4,192

4,542

Total Liquids

17,165

21,025

18,959

22,666

Average Prices ($/Bbl)

Crude & Condensate

Average Crude & Cond. Prices

$

72.54

$

68.31

$

62.67

$

64.21

Average Prices ($/Bbl)

Plant Products

Average Plant Product Prices

$

43.67

$

44.88

$

40.57

$

38.85

Selected Balance Sheet Data

9/30/2007

12/31/2006

($ in 000’s)

Total Assets

$

4,870,897

$

6,971,135

Long-term Debt *

1,250,000

2,322,000

Shareholders’ Equity

2,446,750

2,567,400

*   Excludes debt discount of $2,339 at 12/31/06 and $2,171 at 09/30/07