General
Information
Last Update:
Mar. 10, 2011
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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 uses independent, internationally recognized reserve auditors to perform recurring reserves audits of its major oil and gas fields.

The tables below show the estimated net quantities as of December 31, 2009 and 2010, 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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Oil 2010

 

 

 

 

 

 

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)

54

3

11

274

30

372

Revisions and other changes

6

3

 

23

1

33

Extensions and discoveries

Purchase/sale of reserves

Production

6

2

2

29

4

43

Proved reserves as of December 31

54

4

9

268

27

362

Minority interests

123

123

Proved reserves after minority interests

54

4

9

145

27

239

Thereof at equity companies

9

9

Proved reserves after minority interests and at equity companies

54

4

145

27

230

Minority interests in production

14

14

Proved developed reserves as of December 31

42

3

9

246

22

322

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Gas 2010

 

 

 

 

 

 

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

278

101

3,562

202

1,317

5,460

Revisions and other changes

5

38

391

13

29

476

Extensions and discoveries

5

5

Purchase/sale of reserves

Production

34

43

308

20

136

541

Proved reserves as of December 31

249

101

3,645

195

1,210

5,400

Minority interests

96

96

Proved reserves after minority interests

249

101

3,645

99

1,210

5,304

Thereof at equity companies

3,645

3,645

Proved reserves after minority interests and at equity companies

249

101

99

1,210

1,659

Minority interests in production

9

9

Proved developed reserves as of December 31

223

80

3,517

158

1,007

4,985

  Download (Download XLS xls, 18 kB)

Oil 2009

 

 

 

 

 

 

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)

55

12

12

286

39

404

Revisions and other changes

6

(5)

1

24

(6)

20

Extensions and discoveries

Purchase/sale of reserves

(2)

(2)

Production

7

2

2

36

3

50

Proved reserves as of December 31

54

3

11

274

30

372

Minority interests

129

129

Proved reserves after minority interests

54

3

11

145

30

243

Thereof at equity companies

11

11

Proved reserves after minority interests and at equity companies

54

3

145

30

232

Minority interests in production

17

17

Proved developed reserves as of December 31

39

3

11

269

24

346

  Download (Download XLS xls, 18 kB)

Gas 2009

 

 

 

 

 

 

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

313

144

3,432

192

1,281

5,362

Revisions and other changes

3

5

405

31

162

606

Extensions and discoveries

6

6

Purchase/sale of reserves

(2)

(2)

Production

38

52

275

21

126

512

Proved reserves as of December 31

278

101

3,562

202

1,317

5,460

Minority interests

99

99

Proved reserves after minority interests

278

101

3,562

103

1,317

5,361

Thereof at equity companies

3,562

3,562

Proved reserves after minority interests and at equity companies

278

101

103

1,317

1,799

Minority interests in production

10

10

Proved developed reserves as of December 31

275

101

3,554

188

1,108

5,226

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