Creation of CO2 geological storage suitability model in coal-accumulating basin based on AHP and fuzzy comprehensive evaluation

Analyzing of effect on greenhouse gas such as CO2 emission to global climate and the significance carrying out research on CO2 underground storage technology system, this study used earth system science theory as a guide, studied index condition of CO2 geological storage suitability in Chinese coal-accumulating basin, fully considered the element of each respect, used analytic hierarchy process and fuzzy comprehensive evaluation, built comprehensive evaluation model of CO2 geological storage suitability in coal-accumulating basin. With Qinshui Basin as an example, the weight of each index was determined using AHP, the result was calculated using the fuzzy comprehensive evaluation, the calculation result coincided with the actual geological survey evaluation. Construction of CO2 geological storage comprehensive evaluation model provides certain reference significance for CO2 geological storage on coal-accumulating basin.