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.

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

Million
barrels

 

2015

2014

2013

2012

2011

[A]

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

Revisions and reclassifications

(252)

62

351

629

190

Improved recovery

4

9

412

13

34

Extensions and discoveries

48

68

182

88

326

Purchases of minerals in place

2

48

82

Sales of minerals in place

(76)

(86)

(4)

(66)

(37)

Total additions including year-average price effects

(274)

53

989

746

513

Production

(553)

(544)

(564)

(598)

(611)

Proved natural gas reserves changes for Shell subsidiaries and Shell share of joint ventures and associates [A][B] (at December 31)

Thousand
million scf

 

2015

2014

2013

2012

2011

[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.

Revisions and reclassifications

114

1,767

2,530

(1,343)

899

Improved recovery

7

160

16

3

Extensions and discoveries

249

762

721

667

3,504

Purchases of minerals in place

86

287

54

161

Sales of minerals in place

(139)

(1,375)

(55)

(684)

(394)

Total additions including year-average price effects

317

1,441

3,410

(1,183)

4,012

Production

(3,258)

(3,598)

(3,729)

(3,687)

(3,485)

Total proved oil and gas reserves changes [A][B] (at December 31)

Million boe

 

2015

2014

2013

2012

2011

[A]

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

[B]

Natural gas volumes are converted to oil equivalent using a factor of 5,800 scf per barrel. Rounding differences may occur in estimates of gas reserves conversion from scf to .

Revisions and reclassifications

(232)

367

787

397

345

Improved recovery

5

9

440

16

35

Extensions and discoveries

91

199

306

203

930

Purchases of minerals in place

16

49

57

110

Sales of minerals in place

(100)

(323)

(13)

(184)

(105)

Total additions including year-average price effects

(220)

301

1,577

542

1,205

Year-average price effects

(1,707)

44

48

(431)

(235)

Total additions excluding year-average price effects

1,487

257

1,529

973

1,440

Total additions excluding acquisitions and divestments and excluding year-average price effects

1,571

531

1,485

1,047

1,545

Production

(1,114)

(1,164)

(1,207)

(1,234)

(1,212)

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

 

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

[A]

Includes proved reserves associated with volumes consumed in operations.

Revisions and reclassifications

(114)

100

7

50

(61)

(25)

204

(420)

7

(252)

Improved recovery

4

4

Extensions and discoveries

10

12

26

48

Purchases of minerals in place

2

2

Sales of minerals in place

(76)

(76)

Total additions including year-average price effects

(114)

100

9

(26)

(47)

(13)

230

(420)

7

(274)

Production

(66)

(206)

(11)

(86)

(104)

(9)

(52)

(5)

(14)

(553)

Proved natural gas reserves changes for Shell subsidiaries and Shell share of joint ventures and associates [A][B]

Thousand
million scf

 

 

 

 

 

North America

South America

 

 

Europe

Asia

Oceania

Africa

USA

Canada

Total

[A]

Includes proved reserves associated with volumes consumed in operations.

[B]

These quantities have not been adjusted to standard heat content.

Revisions and reclassifications

31

1,171

64

5

(587)

(581)

11

114

Improved recovery

6

1

7

Extensions and discoveries

11

4

59

175

249

Purchases of minerals in place

84

2

86

Sales of minerals in place

(19)

(115)

(5)

(139)

Total additions including year-average price effects

29

1,171

148

(106)

(532)

(404)

11

317

Production

(939)

(1,217)

(280)

(279)

(275)

(252)

(16)

(3,258)

Total proved reserves changes for Shell subsidiaries and Shell share of joint ventures and associates [A][B]

Million boe

 

 

 

 

 

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

[A]

Includes proved reserves associated with volumes consumed in operations.

[B]

Natural gas volumes are converted to 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.

Revisions and reclassifications

(109)

302

18

51

(162)

(125)

204

(420)

9

(232)

Improved recovery

1

4

5

Extensions and discoveries

2

1

20

42

26

91

Purchases of minerals in place

16

16

Sales of minerals in place

(3)

(96)

(1)

(100)

Total additions including year-average price effects

(109)

302

34

(44)

(139)

(83)

230

(420)

9

(220)

Year-average price effect

 

 

 

 

 

 

 

 

 

(1,707)

Production

(228)

(416)

(59)

(134)

(151)

(52)

(52)

(5)

(17)

(1,114)

Reserves replacement ratio excluding acquisitions and divestments and year-average price effects

 

 

 

 

 

 

 

 

 

141%

Total additions excluding acquisitions and divestments and including year-average price effects

 

 

 

 

 

 

 

 

 

(136)

Reserves replacement ratio including acquisitions and divestments and year-average price effects

 

 

 

 

 

 

 

 

 

-20%

boe(/d)
barrels of oil equivalent (per day); natural gas volumes are converted to oil equivalent using a factor of 5,800 scf per barrel
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