Stock-taking of CO2 and CH4 emissions from the energy sources natural gas and crude oil from origin to final use having been established, possibilities for reducing these greenhouse gases have been evaluated.

Combined cycle processes, heat pumps, fuel cells, etc. have been studied as measures to increase the efficiency of combustion processes. The use of CO2-free energy sources as well as the logistics and the disposal of CO2 in depleted reservoirs or in the oceans have been considered.

The introduction of hydrogen as an additive to natural gas has been considered.

The possibilities of reduction of methane emissions are demonstrated for high-pressure gas transmission lines, dehydration units and low-pressure flowlines including burners. The possibilities of reduction of NOx, CO and UHC emissions in domestic and industrial use are also shown.

It is shown that all processes considered increase combustion efficiency and also offer possibilities for reductions in emissions of greenhouse gases. Fuel cells also indicate a high potential for the future. Special techniques which are currently being introduced in the gas and oil industry are also effective in reducing NOx and CO emissions from combustion engines and burners.

Solar energy, power generation by wind force and other CO2-free energy sources are not recommended for the gas and oil industry; this is left to public power generation. The disposal of CO2 in depleted reservoirs or oceans appears possible, but this is neither an effective method nor an easy to handle procedure.

Reduction in methane emission is relatively easy to achieve.

The developed concepts for the reduction in emission of greenhouse gases and other pollutants can be applied in all sectors of the gas and oil industry. They are regarded as technically sound. An improvement in the economics of these measures is still desirable.

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