Analysis and simulation of flare gas recovery in oil and gas producing company

Flare gas recovery is very useful in reducing the greenhouse gas emissions caused by petroleum activities. In this paper, the potential of generating electricity from the associated gas, produced by a Tunisian oil company, was analyzed. Olga software was used to study the possibility of transporting the associated gas in the same pipeline that carries oil and water. A technical, economic and environmental evaluation was performed to investigate the process feasibility. The results showed that the highest obtained pressure, following the injection of the associated gas in the pipeline, was about 43 bar. This is lower than its maximum allowable working pressure which indicates that this injection is technically viable. From the economic point of view, the process of eliminating flaring presented a net present value of about 408315 dollars and a payback period of 3.2?years. Thus, the recovery method is considered economically viable as well.