diversity with longevity

Enerplus has consistently replaced its reserves year over year.



The mixture of commodities within our reserve base shows the diversity of our asset base.



Oil and Gas Reserve
s

YEAR OVER YEAR, PROVED PLUS PROBABLE RESERVES WERE ESSENTIALLY UNCHANGED VERSUS ESTABLISHED RESERVES LAST YEAR

Year-end 2003 reserves were evaluated in accordance with the newly introduced National Instrument 51-101 guidelines that were imposed by Canadian regulators earlier in the year. These guidelines are deemed to be more stringent and are intended to improve the consistency of reserve reports within the oil and gas sector. Enerplus’ year end proved plus probable reserves were essentially unchanged from the established reserves reported in the prior year, going from 330.4 MMBOE in 2002 to 328.1 MMBOE in 2003, down 0.7%. Proved reserves, however, were more adversely affected by the more stringent regulations going from 288.3 MMBOE in 2002 to 249.2 MMBOE in 2003, down 13.6%. A portion of the negative proved revisions can be attributed to the new 50-year cutoff rule, which has virtually no impact on the Fund’s production or net asset values.

Positive proved plus probable reserve revisions of 4.0 million BOE or 1.3% occurred as the effects of positive technical revisions exceeded the negative effects of NI 51-101. Proved reserve revisions were negative 31.0 MMBOE or 10.7%. Positive revisions associated with our development program of

10.9 MMBOE were more than offset by negative revisions of 41.9 MMBOE associated with NI 51-101.

NEW NI 51-101 RESERVE REPORTING RULES

Effective with the 2003 annual reporting cycle, Enerplus, and the majority of publicly traded Canadian oil and gas companies, are now subject to the Canadian reserve reporting requirement known as National Instrument 51-101. This new reporting requirement includes a number of rules and standards that were designed to improve consistency and reliability of Canadian public oil and gas reserve disclosures. The most significant changes associated with NI 51-101 include:

  • the introduction of a 50-year cutoff which eliminates any reserves expected to be produced after 50 years;
  • a more rigorous risking of probable reserves;
  • a more stringent definition of proved reserves; and
  • inclusion of future development costs when calculating finding and development costs.

While many fields produce much longer than 50 years, the 50-year cutoff was introduced to provide a consistent cutoff point in standardizing reserve reporting. This change impacts the reserve volumes for longer life entities, such as Enerplus, but does not have a material impact on current net asset values as these reserves have limited present value.



Another key change associated with NI 51-101 was the introduction of proved plus probable reserves (risked) to replace the previously used “established reserves” (proved plus half probable). Essentially each of these two definitions are designed to provide the most likely reserve estimate and we have used the two terms for comparison purposes throughout this report.

The third key change associated with NI 51-101 was a more conservative standard around reporting proved reserves. Traditionally, proved reserves represented a conservative estimate of the aggregate expected reserves. NI 51-101 introduced increased conservatism in an effort to limit potential negative proved reserve revisions. This higher standard has generally resulted in lower reported proved reserves across the Canadian industry this year.

The final major change requires future development capital to be included when calculating finding and development costs. Accordingly, we have included future development capital in our calculation of FD&A costs. This puts developed and undeveloped reserves on a more consistent basis for more meaningful comparisons across the industry.

RESERVE REPORTING

Given the new rules in place this year, comparisons to prior years are more difficult. To assist investors, we have provided disclosure that highlights reserve changes and associated metrics to allow comparisons year-over-year under the prior methodology (without NI 51-101) and with the new reporting rules (with NI 51-101). We have also adopted the practice of reporting proved plus probable reserves in 2003 whereas we previously reported established reserves. This type of reporting provides a clearer picture of reserve performance and changes during this transition year as the industry applies the new standards.

NI 51-101 has additional reporting requirements that provide more fulsome disclosure to investors and standardized the methods of calculating certain metrics. Additional information with regard to net reserves and constant prices will be contained in our Annual Information Form. All references to barrels of oil equivalent utilize a conversion rate of six Mcf of natural gas to one barrel of oil.

2003 RESERVE SUMMARY



2003 Reserve Summary - Gross Company Interest Volumes
 

Light & Medium Oil

Mbbls

Heavy Oil

Mbbls

Total Oil

Mbbls

Natural Gas Liquids

Mbbls

Natural Gas

Bcf

2003

Total

 MBOE

Proved developed producing

74,558

11,301

85,859

11,846

737

220,605

Proved developed non-producing

97

63

160

517

26

5,061

Proved Uudeveloped

1,388

3,656

5,044

1,208

104

23,502

Total Proved Reserves

76,043

15,020

91,063

13,571

867

249,168

Probable Reserves

23,206

4,601

27,807

3,742

284

78,898

Total Proved Plus Probable Reserves

99,249

19,621

118,870

17,313

1,151

328,066

 

RESERVE RECONCILIATION

Proved Reserves - Gross Company Interest

(forecast prices)

Light & Medium

Oil

Mbbls

Heavy

Oil

Mbbls

Total

Oil

Mbbls

Natural Gas

Liquids

Mbbls

Natural

Gas

Bcf

 

Total

MBOE

Proved Reserves at Dec. 31, 2002

87,330

17,917

105,247

16,036

1,002

288,267

Acquisitions

8,841

24

8,865

805

88

24,337

Divestments

-5,226

-16

-5,242

-259

-10

-7,168

Extensions

372

0

372

94

9

2,025

Technical Revisions  excl. NI 51-101

6,738

607

7,345

12

2

7,647

Discoveries

0

0

0

0

0

0

Economic Factors

-517

408

-109

13

8

1,273

Improved Recovery

0

0

0

0

0

0

Production

-7,466

-1,512

-8,978

-1,703

-88

-25,336

Reserves at Dec. 31, 2003 excl. NI 51-101

90,072

17,428

107,500

14,998

1,011

291,045

NI 51-101  50 Year Cut-off

-6,211

0

-6,211

-567

-18

-9,778

Other NI 51-101 Revisions

-7,818

-2,408

-10,226

-860

-126

-32,099

Reserves at Dec. 31, 2003 incl. NI 51-101

76,043

15,020

91,063

13,571

867

249,168


Probable Reserves - Gross Company Interest (forecast prices)
 

Light & Medium Oil

Mbbls

Heavy

Oil

Mbbls

Total

Oil

Mbbls

Natural Gas

Liquids

Mbbls

Natural

Gas

Bcf

 

Total

MBOE

Half Probable Reserves at Dec. 31, 2002

13,169

3,556

16,725

2,318

139

42,175

Acquisitions

1,454

43

1,497

122

13

3,769

Divestments

-1,485

-292

-1,777

-35

-1

-2,034

Extensions

49

0

49

0

3

541

Technical Revisions - excl. NI 51-101

2,548

-99

2,449

4

0

2,549

Discoveries

0

0

0

0

0

0

Economic Factors

-824

233

-591

264

-3

-920

Improved Recovery

1,092

0

1,092

0

0

1,092

Production

0

0

0

0

0

0

Reserves at Dec. 31, 2003 excl. NI 51-101

16,003

3,441

19,444

2,673

151

47,172

NI 51-101 50 Year Cut-off

-2,976

0

-2,976

-312

-22

-6,994

Other NI 51-101 Revisions

10,179

1,160

11,339

1,381

155

38,720

Reserves at Dec. 31, 2003 incl. NI 51-101

23,206

4,601

27,807

3,742

284

78,898



 Proved plus Probable Reserves - Gross Company  (forecast prices)
 

Light &

Medium Oil

Mbbls

Heavy

Oil

Mbbls

Total

Oil

Mbbls

Natural Gas

Liquids

Mbbls

Natural

Gas

Bcf

Total

MBOE

Estab. Reserves at Dec. 31, 2002

100,499

21,473

121,972

18,354

1,141

330,442

Acquisitions

10,295

67

10,362

927

101

28,106

Divestments

-6,711

-308

-7,019

-294

-11

-9,202

Extensions

421

0

421

94

12

2,566

Technical Revisions excl. NI 51-101

9,286

508

9,794

16

2

10,196

Discoveries

0

0

0

0

0

0

Economic Factors

-1,341

641

-700

277

5

353

Improved Recovery

1,092

0

1,092

0

0

1,092

Production

-7,466

-1,512

-8,978

-1,703

-88

-25,336

Reserves at Dec. 31, 2003 excl. NI 51-101

106,075

20,869

126,944

17,671

1,162

338,217

NI 51-101 50 Year Cut-off

-9,187

0

-9,187

-879

-40

-16,772

Other NI 51-101 Revisions

2,361

-1,248

1,113

521

29

6,621

Reserves at Dec. 31, 2003 incl. NI 51-101

99,249

19,621

118,870

17,313

1,151

328,066

Net Present Value of Future Production Revenue

These schedules have been prepared on the basis that no cash income tax will be paid by the Fund or its operating subsidiaries in the future and therefore after-tax future net revenues from oil and gas reserves is equal to before tax future net revenues from oil and gas reserves.

Under Enerplus’ current structure and existing tax legislation, annual taxable income is transferred from its operating entities to the Fund through interest and royalty payments. The Fund, in turn, makes distributions to its unitholders and therefore does not incur any cash income tax in the operating companies or the Fund.

The following table shows the net present value of future production using the forecast prices.

Net Present Value of Future Production Revenue - Forecast Prices and Costs - ($ millions including ARTC)

0%

5%

10%

15%

 

 

 

 

Proved developed producing

$3,540

$2,264

$1,719

$1,414

Proved developed non-producing

82

56

43

35

Proved undeveloped

286

172

111

75

Total Proved Reserves

$3,908

$2,492

$1,873

$1,524

Probable Reserves

1,303

601

360

249

Proved plus Probable Reserves at December 31, 2003

$5,211

$3,093

$2,233

$1,773

Net Asset Value

Enerplus’ net asset value is measured with reference to the present value of future net cash flows from our reserves as estimated by independent reserve engineers, Sproule Associates Limited (“Sproule”), plus land values, adjusted for working capital and long-term debt at year-end. This calculation can vary significantly depending on the oil and natural gas price assumptions used by Sproule. In addition, this calculation ignores “going concern” value and assumes only the reserves identified in the Sproule report with no further acquisitions, despite our 18 year history of replacing production through acquisitions and development.


Net Asset Value - Forecast Prices ($ millions, except per Trust Unit amount)

0%

5%

10%

15%

Present value of proved plus probable reserves at December 31, 2003

$5,211

$3,093

$2,233

$1,773

Undeveloped acreage and seismic (acreage valued at $50/acre)

17

17

17

17

Long-term debt

-338

-338

-338

-338

Net Working capital excluding distributions to unitholders

65

65

65

65

Net asset value

$4,955

$2,837

$1,977

$1,517

Net asset value per Trust Unit(1)

$52.52

$30.07

$20.95

$16.08

(1) Based on 94.3 million Trust Units outstanding as at December 31, 2003.


Reserve Determination Methodologies

Sproule has evaluated 86% of the total proved plus probable value (discounted at 10%) of the Fund’s year-end reserves and has reviewed all the reserves internally evaluated by Enerplus in keeping with NI 51-101. All evaluations of future net production revenues set forth in the tables are stated without provision for income taxes, abandonment costs on existing wells and facilities or associated general and administrative costs.

Prior to this year, Enerplus followed the Canadian practice of using “Established Reserves”, which included proved reserves and the probable reserves portion with a predetermined risk factor of 50%. This year, Enerplus followed the practice of reporting proved plus probable reserves with probable reserves risked by the third party engineering firm or our own internal evaluators in keeping with NI 51-101. In the U.S., reserve estimates are calculated using prices and costs held constant at amounts in effect at the date of the reserve report. Also in the U.S., proved reserves are reported excluding probable reserves and proved reserve standards in the U.S. may not be comparable to the Canadian standards used in NI 51-101. Generally, Canadian proved reserves are more conservative from U.S. proved reserves. In the U.S., only net production is typically reported. As a consequence, care should be used when comparing U.S. and Canadian style reserves and production between companies.

The present value of future cash flows at December 31, 2003 was based upon crude oil and natural gas pricing assumptions prepared by Sproule. The base reference prices and exchange rates used by Sproule are as follows:

Sproule January 1 forecast prices

WTI Crude Oil $US/bbl

Light Crude (1) Edmonton
$CDN/bbl

Natural gas
30 day spot
Plant Gate Price
$CDN/MMBtu

Exchange Rate
$US/$Cdn

2004

$29.63

$37.99

$5.81

$0.75

2005

26.80

34.24

5.15

0.75

2006

25.76

32.87

4.59

0.75

2007

26.14

33.37

4.71

0.75

2008

26.53

33.87

4.80

0.75

Thereafter

+ 1.5%

+ 1.5%

+ 1.5%

0.75

(1) Edmonton refinery postings for 40 degree API, 0.4% sulphur content crude

Finding, Development and Acquisition Costs

OUR THREE-YEAR FD&A COSTS, USING PROVED PLUS PROBABLE RESERVES, IS AMONG THE BEST IN OUR SECTOR AT $8.54 PER BOE USING THE NEW NI 51-101 METHODOLOGY AND $7.86 PER BOE USING THE HISTORICAL METHODOLOGY.

Enerplus has maintained an attractive finding, development and acquisition ("FD&A") cost on a proved plus probable reserves basis over time. Our three-year FD&A cost is among the best in our sector at $8.54 per BOE using the new NI 51-101 methodology and $7.86 per BOE using the historical methodology. We also enjoy an attractive three-year average recycle ratio of 1.9 on a proved plus probable reserves basis under NI 51-101. The recycle ratio is indicative of the value created by our investment activities. The higher the recycle ratio, the better the profitability of our investments. A recycle ratio of less than one represents negative value creation.

The following tables summarize Enerplus' FD&A costs on both a proved and proved plus probable basis under both the new NI 51-101 guidelines and the historic method for calculating FD&A. We have also included the recycle ratio on a proved plus probable basis. We believe FD&A and recycle metrics under the new NI 51-101 rules are comparable year-over-year when using established reserves for prior years and the new proved plus probable reserves for 2003. However, a comparison using proved reserves is problematic because of the more stringent rules applied this year. To assist investors in determining our FD&A performance this year in a historical context, we have included FD&A costs as determined under both the new and old methods.

FD&A for proved plus probable reserves did not materially change under the two methods ($8.54 per BOE under the new rules and $7.86 per BOE under the historic methodology) given the comparability of established and proved plus probable reserves used in the calculation. FD&A for proved reserves only changed materially given the significant difference in what constitutes proved reserves year-over-year. Under NI 51-101, we expect 2003 will form a new baseline for proved reserves that can be used to determine FD&A on a proved basis going forward. Historical comparisons, including three-year average FD&A, will continue to be problematic until three years of reserve numbers determined under the same rules are available.

The following schedule compares Enerplus’ FD&A costs for the last three years on a proved plus probable basis under the new rules for NI 51-101 and the old method as historically reported.

 

FD&A Costs- UNDER NI 51-101 ($ millions, except per BOE amounts)

2003

2002

2001

Proved Reserves

  Capital expenditures and net acquisitions

 309.8

357.3

872.6

  Net change in Future Development Costs

(26.1)

58.6

16.4

  Gross company reserve additions (MBOE)

(13.8)

41.7

111.3

  FD&A costs ($/BOE)

N/A(1)

9.97

7.99

  Three year average FD&A costs ($/BOE)(2)

11.41

8.48

8.25

Proved plus Probable Reserves (Prior to 2003 - Established)

  Capital expenditures and net acquisitions

309.8

357.3

872.6

  Net change in Future Development Costs

(43.0)

48.0

42.7

  Gross company reserve additions (MBOE)

23.0

41.0

121.9

  FD&A costs ($/BOE)

11.60

9.89

7.51

  Three year average FD&A costs ($/BOE) (2)

8.54

7.88

7.48

(1) As the negative proved revisions during 2003 were greater than the reserve additions, the FD&A cost for 2003 is not determinable.
(2) Calculated as FD&A over a three-year period.



FD&A Costs - UNDER HISTORIC METHODOLOGY ($ millions, except per BOE amounts)

2003

2002

2001

Proved Reserves

  Capital expenditures and net acquisitions(1)

 309.8

357.3

872.6

  Gross company reserve additions excluding NI 51-101 effects (MBOE)

28.1

41.7

111.3

  FD&A costs ($/BOE)

11.02

8.57

7.84

  Three year average FD&A costs ($/BOE) (2)

8.50

8.08

8.02

Proved plus Probable Reserves (Prior to 2003 - Established)

Reserves

  Capital expenditures and net acquisitions(1)

309.8

357.3

872.6

  Gross company reserve additions excluding NI 51-101 effects (MBOE)

33.1

41.0

121.9

  FD&A costs ($/BOE)

9.36

8.72

7.16

  Three year average FD&A costs ($/BOE) (2)

7.86

7.46

7.19

(1) Future Development Costs are excluded from all years.
(2) Calculated as FD&A over a three-year period.

Recycle Ratio

2003

2002

2001

  Operating netback ($/BOE)

20.89

15.50

19.61

  Finding, development and acquisition costs ($/BOE)

11.60

9.89

7.51

  Recycle ratio

1.8x

1.6x

2.6x

  Three year average recycle ratio

1.9x

2.1x

2.3x