oa Modeling of oil filtration processes around horizontal wells in hard reaching anisotropic reservoirs

On the base of combined finite element - difference method, we carried out computer modeling of filtration processes around horizontal producing wells in anisotropic hard reaching oil reservoirs. According to obtained data analysis, for effective exploitation of anisotropic hard reaching oil reservoirs, it is necessary to install horizontal production wells in areas with relatively low anisotropy of the reservoir permeability, to avoid places with the presence of shear permeability of the oil reservoir. The most effective arrangement of horizontal producing wells in anisotropic reservoirs is their diagonal location relatively reservoir anisotropy axes. At the same time, it is necessary to carry out a systematic analysis of the surrounding anisotropy of the oil reservoirs in order to place a horizontal well in such a way that would provide an effective dynamics of filtration processes around the well. That is, on the one hand, there was no blocking of oil from the side of reduced permeability, another hand, there was no rapid depletion of the reservoir from the side of increased permeability, at that equable access of oil to the producing well from all possible directions was ensured.