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Environmental data

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ENVIRONMENTAL DATA

 

 

 

 

 

 

 

 

 

 

 

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

[A]

Oil and gas industry guidelines (IPIECA/API/OGP) indicate that a number of sources of uncertainty can contribute to the overall uncertainty of a corporate emissions inventory. CO2 equivalent is a term used to express the total emissions of the major greenhouse gases, including CO2, methane, nitrous oxide and hydrofluorocarbons.

[B]

Nigeria includes SPDC onshore operations (1.4 million tonnes flared in 2012) and SNEPCo offshore operations (0.1 million tonnes flared in 2012).

[C]

Flaring from the Pearl GTL plant in Qatar and the Majnoon field in Iraq amounted to 0.2 and 0.1 million tonnes of hydrocarbon respectively in 2012.

[D]

2012 data reported on a consistent basis with previous years in accordance with IPIECA/API/OGP guidance 2005.

[E]

The data includes mining and upgrading operations. It does not include in situ production. We have updated our figures following recalculation of the data.

[F]

Data is indexed to 2002, based on Solomon Associates Energy Intensity Index 2006 methodology.

[G]

We have updated our 2011 and 2010 figures following review of the data.

[H]

All spill volumes and numbers are for spills over 100 kilograms.

[I]

As of the end of March 2013, there were three spills under investigation in Nigeria that may result in adjustments to the 2012 data.

[J]

All sabotage- and theft-related spills have occurred in Nigeria except in 2007 (0.7 thousand tonnes outside Nigeria) and 2006 (0.6 thousand tonnes outside Nigeria).

[K]

Nigeria includes SPDC onshore operations and SNEPCo offshore operations. A single spill at the Bonga field offshore Nigeria amounted to 4.8 thousand tonnes in 2011.

[L]

We have updated our 2011 figure following review of the data. The numbers of operational spills reported for 2004 and 2005 contain a small number of hurricane spills.

[M]

Nigeria includes SPDC onshore operations (36 operational spills in 2012) and SNEPCo offshore operations (0 operational spills in 2012).

[N]

In 2012 we recycled, reused or sold over 300 thousand tonnes of material that would otherwise have been disposed of as waste.

n/c

Not calculated.

Greenhouse gas emissions (GHGs)

 

 

 

 

 

 

 

 

 

 

Direct total GHGs (million tonnes CO2 equivalent) [A]

72

74

76

69

75

82

88

93

101

102

Carbon dioxide (CO2) (million tonnes)

69

71

72

66

72

79

85

89

96

97

Methane (CH4) (thousand tonnes)

93

133

128

127

126

119

124

173

192

187

Nitrous oxide (N2O) (thousand tonnes)

1

1

2

2

2

2

2

2

2

3

Hydrofluorocarbons (HFCs) (tonnes)

23

22

23

25

23

28

24

20

13

9

Indirect total GHGs (million tonnes CO2 equivalent)

9

10

9

9

n/c

n/c

n/c

n/c

n/c

n/c

Flaring

 

 

 

 

 

 

 

 

 

 

Flaring (Upstream) (million tonnes CO2 equivalent)

7.7

10.0

10.4

7.8

8.8

9.7

14.3

20.8

24.6

24.1

Flaring (Upstream) (million tonnes hydrocarbon flared)

2.3

3.4

3.6

2.6

2.8

3.4

4.8

7.0

8.1

8.1

Nigeria [B]

1.5

2.0

2.4

1.9

2.3

2.5

3.7

5.8

6.6

6.4

Rest of world [C]

0.8

1.4

1.2

0.7

0.5

0.9

1.1

1.2

1.5

1.7

Energy intensity

 

 

 

 

 

 

 

 

 

 

Upstream excl. oil sands and GTL (gigajoules per tonne production) [D]

0.78

0.75

0.74

0.76

0.74

0.78

0.78

0.71

0.69

0.69

Oil sands (gigajoules per tonne production) [E]

6.6

6.4

6.8

6.6

6.4

5.7

5.3

5.2

5.8

10.0

Refineries: Refinery Energy Index [F]

98.4

100.8

101.8

102.2

98.9

98.6

98.4

98.0

96.7

97.8

Chemical plants: Chemicals Energy Index

91.7

90.8

89.3

92.0

93.0

92.6

92.5

95.8

93.3

98.3

Acid gases and VOCs

 

 

 

 

 

 

 

 

 

 

Sulphur oxides (SOx) (thousand tonnes SO2)

113

136

139

141

175

212

233

226

247

257

Nitrogen oxides (NOx) (thousand tonnes NO2)

147

146

159

142

150

145

154

157

172

193

Volatile organic compounds (VOCs) (thousand tonnes) [G]

89

129

147

126

130

148

185

199

213

226

Ozone-depleting emissions

 

 

 

 

 

 

 

 

 

 

CFCs/halons/trichloroethane (tonnes)

0.0

0.0

0.0

0.4

1.4

0.6

0.3

0.8

2.3

3.0

Hydrochlorofluorocarbons (HCFCs) (tonnes)

8

11

21

24

26

27

35

35

42

44

Spills and discharges [H] [I]

 

 

 

 

 

 

 

 

 

 

Sabotage spills – volume (thousand tonnes) [J]

3.3

1.6

3.0

14.0

6.5

3.4

1.9

1.5

1.1

0.9

Sabotage spills – number [J]

137

118

112

95

115

197

123

111

101

105

Operational spills – volume (thousand tonnes) [K]

2.1

6.0

2.9

1.4

8.8

3.5

3.9

3.4

3.4

5.0

Nigeria

0.2

5.3

0.7

0.3

7.1

1.6

1.4

0.1

0.0

0.4

Rest of world

1.9

0.7

2.2

1.1

1.7

1.9

2.5

3.3

3.4

4.6

Operational spills – number [L]

206

211

195

275

275

392

465

560

711

678

Nigeria [M]

36

64

32

37

42

52

41

63

48

48

Rest of world

170

147

163

238

233

340

424

497

663

630

Hurricane spills – volume (thousand tonnes)

0.0

0.0

0.0

0.0

0.0

0.0

0.0

2.9

1.0

0.0

Oil in effluents to surface environment (thousand tonnes)

1.0

1.3

1.6

1.5

1.7

1.6

1.8

2.3

2.1

2.3

Water

 

 

 

 

 

 

 

 

 

 

Fresh water withdrawn (million cubic metres)

203

209

202

198

224

235

n/c

n/c

n/c

n/c

Waste disposal

 

 

 

 

 

 

 

 

 

 

Hazardous (thousand tonnes)

820

740

1,048

962

688

907

716

631

714

675

Non-hazardous (thousand tonnes)

2,295

1,850

1,079

1,139

996

1,899

1,154

632

421

443

Total waste (thousand tonnes) [G] [N]

3,115

2,590

2,127

2,101

1,684

2,806

1,870

1,263

1,135

1,118