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oa Modeling of gas filtration around horizontal wells in anisotropic hard reaching reservoirs
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Geoinformatics, May 2021, Volume 2021, p.1 - 6
Abstract
On the base of combined finite element - difference method, we carried out computer modeling of filtration processes near horizontal producing wells in anisotropic hard reaching gas reservoirs. The modeling results show for effective exploitation of anisotropic hard reaching gas reservoirs, it is necessary to install horizontal production wells in areas with relatively low permeable anisotropy of the reservoir, to avoid places with presence of shear reservoir permeability. At the installation of horizontal wells in anisotropic hard reaching gas reservoirs, the diagonal arrangement relatively axes of reservoir anisotropy is the most effective. It is necessary to carry out an elaborated analysis of the surrounding anisotropy of the gas reservoir in order such horizontally placement of the well in reservoir, which would provide an intensive filtration process around the well. That is, on the one hand there was no blocking of the gas from the side of reduced reservoir permeability, another hand there was no rapid depletion of the reservoir from the side of increased permeability and free access of gas to the well from all possible directions must be provided.
