Oliveira and Van Hombeeck [8] conducted an energy analysis of a Brazilian oil platform which included the separation, compression and pumping modules but not the production manifolds.
Their work showed that the least energy-efficient subsystem was the oil and gas separation, while the most energy-consuming ones were the petroleum heating and the gas compression processes.
Voldsund et al. [9] carried out an energy analysis of a Norwegian oil platform and considered the production manifold, the separation and recompression processes, the fuel gas subsystem and
the oil pumping and gas reinjection trains. Their study demonstrated that the largest energy destruction took place in the production manifold and in the gas reinjection systems. There were
no considerable petroleum heating operations on this platform,since the feed temperature was high enough for separation of the specific oil by pressure reduction only, and thus there was no energy destruction due to heating operations. Nguyen et al. [10]conducted a generic analysis of Norwegian oil and gas facilities. Their work suggested that the production manifold and gas
compression trains were generally the most energy-destructive parts, followed by the recompression and separation modules. It was also shown that these results were particularly sensitive to the compressor and pump efficiencies, as well as to the petroleum composition.