Changes to proved oil and gas reserves

The tables present oil and gas reserves on a net basis, which means that they include the reserves relating to: (i) the Shell subsidiaries including the reserves attributable to non-controlling interest holders in our subsidiaries; and (ii) the Shell share of joint ventures and associates.

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Proved crude oil and natural gas liquids, synthetic crude oil and bitumen reserves changes for Shell subsidiaries and the Shell share of joint ventures and associates [A] (at December 31)Million barrels

 

2019

2018

2017

2016

2015

Revisions and reclassifications

435

517

612

284

(252)

Improved recovery

8

41

76

24

4

Extensions and discoveries

160

347

375

127

48

Purchases of minerals in place

5

3

666

1,207

2

Sales of minerals in place

(96)

(76)

(2,058)

(12)

(76)

Total additions

512

832

(329)

1,630

(274)

Production

(685)

(658)

(667)

(675)

(553)

[A]

Includes proved reserves associated with future production that will be consumed in operations.
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Proved natural gas reserves changes for Shell subsidiaries and the Shell share of joint ventures and associates [A][B] (at December 31)Thousand million scf

 

2019

2018

2017

2016

2015

Revisions and reclassifications

1,956

(800)

1,938

(765)

114

Improved recovery

4

7

141

10

7

Extensions and discoveries

689

841

1,936

586

249

Purchases of minerals in place

5

14

277

7,537

86

Sales of minerals in place

(372)

(650)

(248)

(77)

(139)

Total additions

2,282

(587)

4,044

7,291

317

Production

(4,076)

(4,230)

(4,153)

(4,125)

(3,258)

[A]

Includes proved reserves associated with future production that will be consumed in operations.

[B]

These quantities have not been adjusted to standard heat content.
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Total proved oil and gas reserves changes [A][B] (at December 31)Million boe

 

2019

2018

2017

2016

2015

Revisions and reclassifications

772

380

946

152

(232)

Improved recovery

9

42

100

26

5

Extensions and discoveries

279

493

709

228

91

Purchases of minerals in place

6

5

714

2,506

16

Sales of minerals in place

(160)

(186)

(2,101)

(25)

(100)

Total additions

906

733

368

2,887

(220)

Production

(1,388)

(1,388)

(1,383)

(1,386)

(1,114)

[A]

Includes proved reserves associated with future production that will be consumed in operations.

[B]

Natural gas volumes are converted into oil equivalent using a factor of 5,800 scf per barrel. Rounding differences may occur in estimates of gas reserves conversion from scf to boe.
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Proved crude oil and natural gas liquids, synthetic crude oil and bitumen reserves changes for Shell subsidiaries and the Shell share of joint ventures and associates [A] (at December 31, 2019)Million barrels

 

 

 

 

 

North America

South America

 

 

Europe

Asia

Oceania

Africa

USA

 

 

Canada

Total

 

Oil and NGL

Oil and NGL

Oil and NGL

Oil and NGL

Oil and NGL

Oil and NGL

Synthetic crude oil

Bitumen

Oil and NGL

All products

Revisions and reclassifications

31

247

2

33

86

(2)

(34)

–

72

435

Improved recovery

0

4

0

0

0

0

0

–

4

8

Extensions and discoveries

0

9

0

6

74

11

0

–

60

160

Purchases of minerals in place

0

0

0

0

5

0

0

–

0

5

Sales of minerals in place

(65)

0

0

0

(29)

(2)

0

–

0

(96)

Total additions

(34)

260

2

39

136

7

(34)

–

136

512

Production

(57)

(221)

(10)

(64)

(171)

(12)

(20)

–

(130)

(685)

[A]

Includes proved reserves associated with volumes consumed in operations.
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Proved natural gas reserves changes for Shell subsidiaries and the Shell share of joint ventures and associates [A][B] (at December 31, 2019)Thousand million scf

 

 

 

 

 

North America

South America

 

 

Europe

Asia

Oceania

Africa

USA

Canada

Total

Revisions and reclassifications

(368)

923

733

290

114

235

29

1956

Improved recovery

0

1

0

0

0

0

3

4

Extensions and discoveries

0

41

0

152

142

317

37

689

Purchases of minerals in place

0

0

0

0

5

0

0

5

Sales of minerals in place

(210)

0

0

0

(132)

(30)

0

(372)

Total additions

(578)

965

733

442

129

522

69

2,282

Production

(592)

(1,361)

(788)

(378)

(408)

(230)

(319)

(4,076)

[A]

Includes proved reserves associated with volumes consumed in operations.

[B]

These quantities have not been adjusted to standard heat content.
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Total proved reserves changes for Shell subsidiaries and the Shell share of joint ventures and associates [A] (at December 31, 2019)Million boe

 

 

 

 

 

North America

South America

 

 

Europe

Asia

Oceania

Africa

USA

 

 

Canada

Total

 

Oil, NGL and Gas

Oil, NGL and Gas

Oil, NGL and Gas

Oil, NGL and Gas

Oil, NGL and Gas

Oil, NGL and Gas

Synthetic crude oil

Bitumen

Oil and NGL

All products

Revisions and reclassifications

(33)

406

129

83

106

38

(34)

0

77

772

Improved recovery

0

4

0

0

0

0

 

0

5

9

Extensions and discoveries

0

16

0

32

100

65

0

0

66

279

Purchases of minerals in place

0

0

0

0

6

0

0

0

0

6

Sales of minerals in place

(101)

0

0

0

(52)

(7)

0

0

0

(160)

Total additions

(134)

426

129

115

160

96

(34)

0

148

906

Production

(159)

(455)

(146)

(130)

(242)

(51)

(20)

0

(185)

(1,388)

[A]

Includes proved reserves associated with volumes consumed in operations.
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