In ECOPETROL SA the operating temperatures in the Campos de Castilla Suria Cusiana are about 120 ° C. CAN ASTM standards and test set as conditions for testing maximum Cathodic Disbonding a value of 95 ° C excluding the current scope of the evaluation of coatings for temperatures between 95 and 150 ° C. To meet the needs of select systems higher performance coatings formulated a testing protocol at the plant laboratory and field to assess the performance of coatings applied to operating conditions of 95 to 150 ° C.Tests were performed dry film thickness porosity physicomechanical tests of resistance to abrasion impact and elongation adhesion wet adhesion immersion tests and tests chemical solutions Disbonding Cathodic electrochemical and electrochemical impedance. The results in the laboratory can find correlations between the glass transition temperature the electrochemical response and vapor equilibrium conditions water coating interface determined by the degree of damage found in the coatings evaluated. Key Words: electrochemical impedance disbonding epoxy