Application of the PROMETHEE and VIKOR methods for selecting the most suitable carbon dioxide geological storage option

CO2 storage in geological formations is one of the leading solutions for mitigation greenhouse gas emissions. Types of geological formations that can be used for CO2 storage, that are discussed in this paper are: depleted oil and gas reservoirs, saline aquifers and injection CO2 in partially depleted oil reservoirs for enhanced oil recovery (ЕОР–CO2 method).  In order to select the most suitable geological storage of CO2, the ranking of these storage options was performed using two models of multi criteria analysis, PROMETHEE and VIKOR. In this paper are presented an overview of considered criteria (storage capacity, total storage costs, risk assessment costs, storage time dynamics, risk of CO2 leakage from geological formation and risk of CO2 leakage through the well), description of applied multi criteria analysis methods, selection of optimal CO2 storage option and results of their application.