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Abstract The purpose of the work is to determine the way to work with fracture simulator output data for cases complicated by stage-by-stage processing calculations. Hydraulic fracturing databases are designed to store a single numerical parameter, which causes complications when there are several values in the output data set. The way to obtain a correct estimation of the designated case by a single parameter will allow to apply the results of calculations in the statistical analysis of hydraulic fracturing. Scientific novelty of the work lies in the definition of a new method for working with the output data of the hydraulic fracturing simulator. The scope of application includes the case of formation of several fractures, as well as several calculations relating to one fracture. As a result, a method of working with data has been developed, which allows filling the standardized data set regardless of the number of elements in the output data of the hydraulic fracturing simulator.