New Cement Systems for Durable Zonal Isolation

Abstract

Abstract In this paper we present new cement systems where the value of elastic parameters are specified to meet the requirement for long term mechanical durability. These systems can also contain expanding additives leading to an optimum configuration to prevent loss of zonal isolation due to change of downhole conditions. The advantages of these systems are demonstrated in field test cases where the cement sheath behavior as a function of changes of downhole conditions is modeled to determine whether damage could occur or not.