After remodeling the sample, the drilling fluid was tested to determine the cations. The cation exchange capacity test determined the drilling fluid content after the experiment to study the evolution mechanism of the mechanical properties of drilling fluids before and after remodeling the clay formation samples from a macro and mesoscopic perspective. The correl function is used to analyze the correlation between the cation-related parameters of the drilling fluid and the pore and mechanical parameters of the remodeled sample. The results of w...