METHOD AND SYSTEM FOR IDENTIFYING AND EVALUATING THE RISK OF FAILURE OF A GEOLOGICAL CONFINEMENT SYSTEM

摘要

The invention concerns a method for identifying the risk of failure of a geological confinement system (10), said method including the following steps: acquiring data concerning said system (10); based on said data concerning said system (10), breaking down said system into a plurality of components (11-17); modelling at least one component (11-17) by at least one volume (131-134), said modelling being performed by discretizing in volume said component (11-17); generating at least one failure scenario of said system, said generation comprising at least one iteration of the following steps: analyzing a state of at least one volume (131-134) modelling at least one component (11-17) of said system; detecting, based on the state of the volume (131-134), at least one potential failure mode of said volume (131-134). The inventive method and system enable the risks of failure of any system of geological confinement, natural and/or artificial, in particular oil tanks used for storing CO₂, to be identified. In the case of the latter example, the identification of scenarios enable the paths of potential CO₂ leakage, the sequencing of related failures, the various possible evolutions of the system over the time period concerned, to be highlighted. The inventive method and system enable solutions for securing the geological confinement system to be proposed.