Currently, mineral scales have become a quite common problem in oil extraction and production processes, making it extremely important to have an effective method that allows quantifying the efficiency of scale inhibitors. Based on this problem, an investigation was carried out whose objective was to determine the efficiency of scale inhibitors in production waters through the adaptation of the methodology proposed by Zhang, Wu, Li and Zhao in 2012. To do this, the physical-chemical characterization of three production water samples was performed, as well as two commercial inhibitors and one organic. Subsequently, the adaptation of the evaluative method for production water samples was generated and the behavior of pH as a function of the time generated by the scale inhibitors was studied, considering three different doses (50, 100 and 300 ppm). Additionally, a statistical comparison was made between the pH behavior obtained in this investigation with that obtained in the study carried out by Zhang, Wu, Li and Zhao. As a conclusion, it was obtained that the adaptation generated managed to reproduce the experimental criteria observed in the original proposal in each of the respective evaluations, thus becoming a simple methodology, with low costs associated with its assembly and which managed to adjust to the behavior of pH in function of the time evidenced in the base study, therefore it offers favorable results for measuring the efficiency of scale inhibitors in production waters.