Abstract
Flaring of gas from oil wells is one of the most critical resources of greenhouse gas emissions to the atmosphere in Iran. In addition to environmental impacts, burning flare gases having high heating value results in considerable economic losses. In the current study, flare gas recovery technology assessment was employed, and its downstream installation's reliability was investigated. Using the Markov approach to consider the system's reliability, a new model was created to assess eleven technologies. Technical, economic, and environmental investigation of these eleven technologies was done. Finally, by considering two objective functions, i.e., the return payback period and the carbon dioxide emission reduction, the best technology was selected using TOPSIS decision-making method. It was indicated that the system's reliability could affect the optimal selected flare gas recovery system. Accordingly, a combination of a natural gas liquid plant and an enhanced oil recovery system at the cost of investment of 119.43 M$ and a profit of 112.16 M$ per year, with a return payback period of 1.12 years, was chosen as the final technology. Accordingly, this selected technology could reduce 1.3 million tons of carbon dioxide in the sample oil field.
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