Adequacy indicators of the growth model of spontaneously developing technogenic cracks

The waterfl ood-induced hydraulic fracturing phenomenon has a signifi cant impact on oil and gas production processes, so ignoring this effect can lead to both positive and negative consequences. The article provides a brief description of a single-phase hydrogeomechanical two-dimensional model of self-induced hydraulic fracturing growth. An important difference from the standard model used in the interpretation of well test analysis is the physically substantiated possibility of technogenic fracture growth. Objective assessment and comparison of physico-mathematical models of varying complexity, as well as the quality of their adaptation to real data is a task of primary importance. The paper provides an overview of existing accuracy indicators, also called adequacy indicators. Using these indicators, it is possible to assess the quality of model adaptation. On the example of the waterfl ood-induced hydraulic fracturing phenomenon, a quantitative assessment of physical and mathematical models of varying complexity was carried out using indicators of the quality of their adaptation to historical data. The use of quantitative metrics made it possible to conduct an objective comparative analysis of the two models.