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In an effort to enable benchmarking and increase transparency in the upstream oil and gas industry, for the past 13 years OGP’s Environment Committee has been collecting data from member companies on an annual basis. The latest edition of OGPs Environmental Performance Indicators, covering 2011 environmental data, is now available.
The report covers information on the upstream activities of 41 OGP member companies working in 75 countries. Five of these companies are reporting for the first time. The data have been aggregated at both global and regional levels and are expressed within 6 environmental indictor categories:
The report shows that, for every thousand tonnes of hydrocarbon production, participating companies reported emissions of 133 tonnes of carbon dioxide and 1.25 tonnes of methane equating to 159 tonnes of greenhouse gas, 0.5 tonnes of non-methane volatile organic compounds , 0.2 tonnes of sulphur dioxide and 0.4 tonnes of nitrogen oxide. These are broadly similar with 2010 figures.
The participating companies consumed on average 1.6 Gigajoules of energy for every tonne of hydrocarbon produced, a 7% increase compared with the 2010 average. As in previous years, the data indicate that onshore production in 2011 was more energy intensive than offshore production.
For every thousand tonnes of hydrocarbons produced, 15.7 tonnes of gas was flared.This is an improvement over 16.0 tonnes in 2010 and 17.6 tonnes in 2009. The reduction is predominantly driven by major infrastructure improvement projects in Africa that increase the capability to inject gas for reservoir maintenance and to deliver gas to market. Reductions in flaring translate to reductions in CO2 and other gaseous emission rates.
The average concentration of oil in produced water discharged figures for 2011 show a 10% reduction from 2010 figures. The average quantity of oil discharged per unit of hydrocarbon production decreased by 7%.
There were 35,481 tonnes of non-aqueous base fluids retained on cuttings discharged to sea.
In 2011, participating companies reported that the average quantity of oil spilled was 7.9 tonnes per million tonnes production.
To download the full document, OGP Environmental Performance Indicators 2011 data, visit the publications page of: www.ogp.org.uk
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