Simulation of 2-Phase Fluid Flow on Unstructured Grids Upscaled by Image Segmentation Methods

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Gholinezhad, Sajjad | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44844 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Jamshidi, Saeed; Hajizadeh, Alireza
Abstract:
This paper describes the use of Quad-Tree Decomposition for upscaling of absolute permeability 2D geological models. Quad-Tree Decomposition is a data structure and generates an unstructured upscaled model that preserves the heterogeneity of the original geological model. In other words, in high-variability regions of the geological model, the gridblocks of the upscaled model remain small but in other regions that the permeability variation is low, the gridblocks of the upscaled model are coarsened. Quad-Tree Decomposition is a very simple, efficient and robust method that reduces the total number of gridblocks and results to high saving in time and memory required to flow simulation in the reservoir. Simulation of two-phase flow in different case studies shows that the method performs well and its results are very accurate compared to the results of the fine geological model
Keywords:
Upscaling ; Quad-Tree Decomposition ; Unstructured Grid ; Flow Simulation

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