Integrated Oil Reservoir Model Taking into Account the Effect of Self-Induced Hydraulic Fracturing

The phenomenon of spontaneously developing man-made cracks has a signifi cant impact on the processes of oil and gas production, so ignoring this effect can lead to both positive and negative consequences in the process of developing liquid hydrocarbon fi elds. The article describes an integrated model of an oil fi eld taking into account the growth of self-induced hydraulic fracturing cracks. An important difference from the standard model used in the design and management of the production system of an oil and gas enterprise is the physically substantiated possibility of the growth of spontaneously developing manmade cracks. By taking into account the self-induced hydraulic fracturing phenomenon, the developed model allows improving the quality of the organization of the oil production process at oil fi elds. The calculations show the capabilities and advantages of the created physical and mathematical model in comparison with existing analogues. In the fi rst simulation, there is a redistribution of fl ows between injection wells due to the growth of a mad-made crack on one of them. In the second calculation, due to the formation of a main crack in a row of injection wells, the effect of «squeezing» the central well occurs, leading to a decrease in the volumetric fl ow rate of liquid. This behavior of the performance indicators of production elements cannot be repeated without considering the enterprise as a single system, taking into account the effect of self-induced hydraulic cracks.