For decades these streams has been considered as free of charge - without "price" leading into an extremely wasteful management of potentially saleable recourses. Together with low efficiency prime movers, with net electrical efficiencies well below 30%, the result is even worse in terms of waste and increasing of CO2 footprint of the O&G industry.

In modern oil and gas industry the constant strive is to improve the economics and to reduce the impact to the nature. The fuel is no longer always free of charge - rather a saleable product, the power generation efficiency should be higher than before and the CO2 foot print per produced barrel should be minimised.

One way to improve this efficiency quest is to look what other fuels are there available at production processes. Could some of the "waste" flows be actually considered as fuels in the future? Can the existing natural gas based fuels be sold and thus increase revenues and are there more effective technologies available with fuel flexibility and higher electrical efficiencies for power generation.

In this paper, we will look into the hydrocarbon array available from the oil&gas industry; examine how the various streams in the processes, not normally considered as fuel, could be utilized in power production. We will also look into alternative technologies to rise the electrical efficiency of the power generation and finally simulate the financial impact of all these factors for a typical upstream production operation.

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