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Environmental data table
Our environmental data from 2002 to 2011.
| 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | |
| Greenhouse gas emissions (GHG) | ||||||||||
| Direct total GHGs (million tonnes CO2 equivalent) [A] | 74 | 76 | 69 | 75 | 82 | 88 | 93 | 101 | 102 | 96 |
| Carbon dioxide (CO2) (million tonnes) | 71 | 72 | 66 | 72 | 79 | 85 | 89 | 96 | 97 | 92 |
| Methane (CH4) (thousand tonnes) | 133 | 128 | 127 | 126 | 119 | 124 | 173 | 192 | 187 | 196 |
| Nitrous oxide (N2O) (thousand tonnes) | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 4 |
| Hydrofluorocarbons (HFCs) (tonnes) | 22 | 23 | 25 | 23 | 28 | 24 | 20 | 13 | 9 | 11 |
| Indirect total GHGs (million tonnes CO2 equivalent) | 10 | 10 | 9 | n/c | n/c | n/c | n/c | n/c | n/c | n/c |
| Flaring [B] | ||||||||||
| Flaring (Upstream) (million tonnes CO2 equivalent) | 10.0 | 10.4 | 7.8 | 8.8 | 9.7 | 14.3 | 20.8 | 24.6 | 24.1 | 20.6 |
| Flaring (Upstream) (million tonnes hydrocarbon flared) | 3.4 | 3.6 | 2.6 | 2.8 | 3.4 | 4.8 | 7.0 | 8.1 | 8.1 | 6.8 |
| Nigeria [C] | 2.0 | 2.4 | 1.9 | 2.3 | 2.5 | 3.7 | 5.8 | 6.6 | 6.4 | 5.2 |
| Rest of world [D] | 1.4 | 1.2 | 0.7 | 0.5 | 0.9 | 1.1 | 1.2 | 1.5 | 1.7 | 1.6 |
| Energy intensity | ||||||||||
| Upstream excluding Oil Sands and GTL (gigajoules per tonne production) [E] | 0.75 | 0.74 | 0.76 | 0.74 | 0.78 | 0.78 | 0.71 | 0.69 | 0.69 | 0.73 |
| Oil Sands (gigajoules per tonne production) [F] | 7.4 | 7.2 | 7.0 | 7.0 | 5.7 | 5.3 | 5.2 | 5.8 | 10.0 | n/c |
| Refineries: Refinery Energy Index [G] | 100.8 | 101.8 | 102.2 | 98.9 | 98.6 | 98.4 | 98.0 | 96.7 | 97.8 | 100.0 |
| Chemical plants: Chemicals Energy Index | 90.8 | 89.3 | 92.0 | 93.0 | 92.6 | 92.5 | 95.8 | 93.3 | 98.3 | 99.7 |
| Acid gases and VOCs | ||||||||||
| Sulphur oxides (SOx) (thousand tonnes SO2) | 136 | 139 | 141 | 175 | 212 | 233 | 226 | 247 | 257 | 240 |
| Nitrogen oxides (NOX) (thousand tonnes NO2) | 146 | 159 | 142 | 150 | 145 | 154 | 157 | 172 | 193 | 195 |
| Volatile organic compounds (VOCs) (thousand tonnes) | 111 | 133 | 126 | 130 | 148 | 185 | 199 | 213 | 226 | 324 |
| Ozone-depleting emissions | ||||||||||
| CFCs/halons/trichloroethane (tonnes) | 0.0 | 0.0 | 0.4 | 1.4 | 0.6 | 0.3 | 0.8 | 2.3 | 3.0 | 7.7 |
| Hydrochlorofluorocarbons (HCFCs) (tonnes) [H] | 11 | 21 | 24 | 26 | 27 | 35 | 35 | 42 | 44 | 57 |
| Spills and discharges [I, J] | ||||||||||
| Sabotage spills – volume (thousand tonnes) [K] | 1.6 | 3.0 | 14.0 | 6.5 | 3.4 | 1.9 | 1.5 | 1.1 | 0.9 | 2.5 |
| Sabotage spills – number [K] | 118 | 112 | 95 | 115 | 197 | 123 | 111 | 101 | 105 | 128 |
| Operational spills – volume (thousand tonnes) [L] | 6.0 | 2.9 | 1.4 | 8.8 | 3.5 | 3.9 | 3.4 | 3.4 | 5.0 | 4.2 |
| Nigeria | 5.3 | 0.7 | 0.3 | 7.1 | 1.6 | 1.4 | 0.1 | 0.0 | 0.4 | 0.2 |
| Rest of world | 0.7 | 2.2 | 1.1 | 1.7 | 1.9 | 2.5 | 3.3 | 3.4 | 4.6 | 4.0 |
| Operational spills – number [M] | 208 | 195 | 275 | 275 | 392 | 465 | 560 | 711 | 678 | 784 |
| Nigeria [N] | 64 | 32 | 37 | 42 | 52 | 41 | 63 | 48 | 48 | 66 |
| Rest of world | 144 | 163 | 238 | 233 | 340 | 424 | 497 | 663 | 630 | 718 |
| Hurricane spills – volume (thousand tonnes) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.9 | 1.0 | 0.0 | 0.0 |
| Oil in effluents to surface environment (thousand tonnes) | 1.3 | 1.6 | 1.5 | 1.7 | 1.6 | 1.8 | 2.3 | 2.1 | 2.3 | 2.4 |
| Water | ||||||||||
| Fresh water use (million cubic metres) | 209 | 202 | 198 | 224 | 235 | n/c | n/c | n/c | n/c | n/c |
| Waste disposal | ||||||||||
| Hazardous (thousand tonnes) | 740 | 921 | 962 | 688 | 907 | 716 | 631 | 714 | 675 | 781 |
| Non-hazardous (thousand tonnes) [O] | 1,737 | 1,079 | 1,139 | 996 | 1,899 | 1,154 | 632 | 421 | 443 | 480 |
| Total waste (thousand tonnes) | 2,477 | 2,000 | 2,101 | 1,684 | 2,806 | 1,870 | 1,263 | 1,135 | 1,118 | 1,261 |
[A] Oil and gas industry guidelines (IPIECA/API/OGP) indicate that there are a number of sources of uncertainty that 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. We have updated our 2010 figures following recalculation of the data.
[B] We have updated our 2010 figures following recalculation of the data.
[C] Nigeria includes SPDC onshore operations (1.9 million tonnes flared in 2011) and SNEPCo offshore operations (0.1 million tonnes flared in 2011).
[D] Flaring from the start-up of the Pearl GTL plant in Qatar amounted to 0.4 million tonnes of hydrocarbon in 2011. Flaring in Iraq amounted to 0.3 million tonnes of hydrocarbon in 2011.
[E] Data reported in accordance with IPIECA/API/OGP guidelines. We have updated our figures following recalculation of the data.
[F] The data includes mining and upgrading operations. It does not include in situ production. We have updated our figures following recalculation of the data.
[G] Indexed to 2002; based on Solomon Associates Energy Intensity Index 2006 methodology.
[H] We have updated our 2010 figure following review of the data.
[I] All spill volumes and numbers are for spills over 100 kilograms.
[J] As of the end of March 2012, there were two spills under investigation in Nigeria that may result in adjustments to the 2011 data.
[K] 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).
[L] A single spill at the Bonga field offshore Nigeria amounted to 4.8 thousand tonnes in 2011. Nigeria includes SPDC onshore operations and SNEPCo offshore operations.
[M] We have updated our 2010 figure following review of the data. The number of operational spills reported for 2004 and 2005 also contain a small number of hurricane spills.
[N] Nigeria includes SPDC onshore operations (63 operational spills in 2011) and SNEPCo offshore operations (1 operational spill in 2011).
[O] The increase in 2011 is due to disposal of water containing low levels of selenium in Canada.
n/c Not calculated.