Modelling of the Waterflooding Process in the Presence of Discontinuities in the Reservoir

The knowledge of the nature of the fluid motion in the reservoir allows us to optimize the system of oilfield development. Thus, the study of the filtration process in reservoirs with discontinuities, such as fractures, has a great importance for the oilfield development. For instance, the hydraulic fracturing is one of the most common recovery methods for the unconventional reserves. But the modern level of geophysics can show that mostly reservoirs have the tectonic faults with various permeability, and that has a great impact on well productivity. This article will show the impact of inclusions of different permeability in the reservoir on the waterflooding process. The steady-state flow process of incompressible fluid to the production well in a reservoir of constant height and permeability is considered. There is a thin area in the reservoir with constant permeability, which might be a highly permeable crack or low permeable barrier. The production and injection wells are placed inside the reservoir’s external boundary. The characteristics of waterflooding process are studied for various permeability values and different locations of the fracture and a pair of wells. Finally, flow lines of the fluid flow will be analyzed for every considered case.