Numerical Simulation of Metal/Cement Push-Out Test

Abstract

In petroleum wells, the adhesion between the steel and the cementitious coating material is responsible for ensuring the efficiency of the mechanical point of view and of the thermodynamic stability of steels, protecting them against corrosion, preventing the escape of fluids inside and hydraulically isolating the structure against infiltration. The push-out test is used to measure the level of adhesion between the steel and cement. In this paper, the numerical simulation of steelcement interface was performed to reproduce the mechanical behavior of this interface used a cohesive zone model combined with Coulomb's law for friction. The proposed model was implemented in CAST3M software. The numerical results obtained with the proposed model were compared with experimental results of push-out test. The comparison between the force versus displacement curves, obtained experimentally and numerically, validated the proposed model.