Abstract
Abstract Carbon dioxide capture and storage (CCS) can contribute to stabilizing atmospheric content of carbon dioxide (CO 2 ) provided that it can deliver long-term storage containment. Satisfying this condition requires understanding and representing uncertainty in the underground. One of the major containment failures is due to opening of new or existing fractures or faults, or ingress through the cap rock barrier. In this study semi-analytical methods (e.g. first- and second-order reliability methods) are used to analyze and understand this isolated containment failure mode. This paper gives a brief introduction and description of the mathematics of the reliability method and how it can be applied to analyze the failure probability of CO 2 geologic storage using commercially available software.
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