Assessing the impact of reservoir permeability anisotropy on the cyclic waterflooding effectiveness

The effectiveness of the cyclic waterflooding depends on a number of geological, physical and technological factors. In the articlebased on a three-dimensional hydrodynamic simulation shows the influence of the anisotropy permeability for half-cycle duration and technological efficiency of the method.
Materials and methods
3D simulation.
Results
As a result of simulations on the sectoral simulation model shows that, in addition to factors such as the layered heterogeneity of reservoir hydrodynamic connectivity layers, fractured reservoirs, oil viscosity, areal heterogeneity, compressibility of reservoir system, current oil saturation, efficiency of the method is significantly affected by the reservoir anisotropy coefficient. Duration of half-cycle and technological efficiency of cyclic waterflooding is directly proportional to the value of reservoir anisotropy coefficient.
Сonclusions
It is shown that in addition to well-known criteria for cyclic flooding applicability, reservoir permeability anisotropy hasa significant influence on the choice of process parameters of the method (half-cycle duration) and technological efficiency.The results are scientifically and practically interesting. In particular, the article shows how the results can be used for full-scalethree-dimensional hydrodynamic model for the design of cyclic waterflooding.