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The following information outlines Enerplus' gross average daily production volumes for the years indicated and the company interest reserves based upon forecast prices and costs at December 31 each year.



2005 (1)
2004 (1)
2003 (1)
2002
2001 (4)
Daily Production
Crude oil (bbls/day)
29,315
25,550
24,597
23,288
24,010
NGLs (bbls/day)
4,689
4,398
4,666
4,410
4,650
Natural Gas (Mcf/day)
274,336
271,091
240,907
210,517
203,727
BOE per day
79,727
75,130
69,414
62,784
62,615


Proved Reserves          
Crude oil (Mbbls) 139,198 104,408 91,063 105,247 94,847
NGLs (Mbbls) 13,084 12,776 13,571 16,035 16,114
Natural Gas (MMcf) 965,776 971,598 867,204 1,001,913 951,133
MBOE 313,245 279,117 249,168 288,267 269,483


Probable Reserves (2)          
Crude oil (Mbbls) 75,267 74,530 27,807 16,725 18,821
NGLs (Mbbls) 3,539 3,292 3,742 2,319 2,337
Natural Gas (MMcf) 342,518 295,698 284,096 138,789 130,345
MBOE 135,892 127,105 78,898 42,175 42,882


Proved plus Probable Reserves          
Crude oil (Mbbls)
214,465
178,938
118,870
121,972
113,668
NGLs (Mbbls)
16,623
16,068
17,313
18,354
18,451
Natural Gas (MMcf)
1,308,294
1,267,296
1,151,300
1,140,702
1,081,478
MBOE
449,137
406,222
328,066
330,442
312,365


Reserve Life Index (3)          
Proved (years) 9.9 10.1 10.6 12.0 12.1
Proved plus probable (years) 13.5 14.0 13.3 13.8 14.0


(1) 2005, 2004 & 2003 reserve information reflects NI 51-101 reporting methodology. All prior years have not been restated for NI 51-101. (2) Probable reserves for years 2002 and prior have been risked by 50%. (3) The Reserve Life Indices (RLIs) are based upon year-end proved reserves divided by following year's proved production volumes and year-end proved plus probable reserves (established reserves for years 2002 and prior) divided by following year's proved and proved plus probable production volumes determined in the independent reserve engineering report for 2003 forward and management's estimate for all prior years. (4) Reflects the combined results of Enerplus and EnerMark Income Fund for the years indicated as if the combination of the funds had been effective January 1, 2000. This information may not be representative of the actual results had the combination occurred on that date. No pro forma adjustments have been made to give effect to the combination of Enerplus and EnerMark Income Fund for 2001.

 


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