Аннотация:Two types of mechanisms could lead to loss of cement-sheath integrity: mechanical and chemical degradations. However, chemical degradation by CO2 does not seem to be a real threat when the cement sheath is initially without default. Hence, it is important to understand the mechanical mechanisms that could lead to loss of cement-sheath integrity before and during CO2 sequestration. This is with this objective that Total has developed an integrated perspective whereby all events in the life of the well, are scrutinized. The description of this perspective is the objective of this paper.
