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Last Update: 03/12/2009
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Oil and gas reserves

Proved oil and gas reserves are the estimated volumes of crude oil, natural gas and natural gas liquids that are shown by geological and engineering data with reasonable certainty to be recoverable in future years from known reserves under existing economic and operating conditions. Accordingly, reserve estimates could be materially different from the quantities of oil and natural gas that are ultimately recovered. To reduce uncertainties, Wintershall has used independent, internationally recognized reserve auditors for some years to perform reserves audits of its major oil and gas fields.

The tables below show the estimated net quantities as of December 31, 2008 and 2007, of the Company’s proved oil and gas reserves and proved developed oil and gas reserves as well as changes in estimated proved reserves as a result of production and other factors.

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2008

 

 

 

 

 

 

Germany

Rest of
Europe

Russia,
Caspian Sea
region

North Africa,
Middle East

South America

Total

Proved developed and undeveloped oil reserves as of January 1, millions of barrels (MMbbl)

63

1

11

270

45

390

Revisions und other changes

2

60

(1)

61

Extensions and discoveries

Purchase/ sale of reserves

12

12

Production

8

1

1

44

5

59

Proved reserves as of December 31

55

12

12

286

39

404

Minority interests

133

133

Proved reserves after minority interests

55

12

12

153

39

271

Thereof at equity companies

12

12

Proved reserves after minority interests
and at equity companies

55

12

153

39

259

Minority interests in production

21

21

Proved developed reserves as of December 31

40

7

12

282

32

373

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2008

 

 

 

 

 

 

Germany

Rest of
Europe

Russia,
Caspian Sea
region

North Africa,
Middle East

South America

Total

1

The natural gas volumes can be converted with the factor 6 BSCF per MMBOE (Million Barrel Oil Equivalent).

Proved developed and undeveloped gas reserves as of January 1, Billion Standard Cubic Feet (BSCF)1

365

170

3,239

194

1,337

5,305

Revisions und other changes

(11)

16

375

25

63

468

Extensions and discoveries

24

24

Purchase/ sale of reserves

(4)

(4)

Production

41

62

182

27

119

431

Proved reserves as of December 31

313

144

3,432

192

1,281

5,362

Minority interests

94

94

Proved reserves after minority interests

313

144

3,432

98

1,281

5,268

Thereof at equity companies

3,432

3,432

Proved reserves after minority interests
and at equity companies

313

144

98

1,281

1,836

Minority interests in production

13

13

Proved developed reserves as of December 31

308

126

2,512

190

1,007

4,143

  Download (Download XLS xls, 18 kB)

2007

 

 

 

 

 

 

Germany

Rest of
Europe

Russia,
Caspian Sea
region

North Africa,
Middle East

South America

Total

Proved developed and undeveloped oil reserves as of January 1, millions of barrels (MMbbl)

68

2

12

306

54

442

Revisions und other changes

4

1

8

(4)

9

Extensions and discoveries

3

3

Purchase/ sale of reserves

Production

9

1

2

47

5

64

Proved reserves as of December 31

63

1

11

270

45

390

Minority interests

126

126

Proved reserves after minority interests

63

1

11

144

45

264

Thereof at equity companies

11

11

Proved reserves after minority interests
and at equity companies

63

1

144

45

253

Minority interests in production

2

2

Proved developed reserves as of December 31

44

1

11

265

37

358

  Download (Download XLS xls, 19 kB)

2007

 

 

 

 

 

 

Germany

Rest of
Europe

Russia,
Caspian Sea
region

North Africa,
Middle East

South America

Total

1

The natural gas volumes can be converted with the factor 6 BSCF per MMBOE (Million Barrel Oil Equivalent).

Proved developed and undeveloped gas reserves as of January 1, Billion Standard Cubic Feet (BSCF)1

376

214

232

1,408

2,230

Revisions und other changes

34

32

(14)

55

107

Extensions and discoveries

2

4

6

Purchase/ sale of reserves

(1)

3,254

3,253

Production

45

77

15

28

126

291

Proved reserves as of December 31

365

170

3,239

194

1,337

5,305

Minority interests

95

95

Proved reserves after minority interests

365

170

3,239

99

1,337

5,210

Thereof at equity companies

3,239

3,239

Proved reserves after minority interests
and at equity companies

365

170

99

1,337

1,971

Minority interests in production

1

1

Proved developed reserves as of December 31

332

170

1,275

190

956

2,923

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