Flow-Based Upscaling for Voronoi Grid near a Hydraulic Fracture

DOI

10.2991/csit-19.2019.4How to use a DOI?

Keywords

reservoir simulation, upscaling, discrete fracture model, well performance (key words)

Abstract

An important task in reservoir simulation is to take into account the hydraulic fracture effect on well performances. Flow-based upscaling procedures are used to capture the nonlinear pressure variations near the fracture. A numerical near-well upscaling procedure for finite conductivity hydraulic fractures is presented. Spatial discretization is performed using consistent fine and coarse unstructured Voronoi grids. An algorithm for constructing such grids is described. Solution of a simple steady-state flow equation near the fracture is obtained on the fine grid and upscaled to the coarse grid. The flow inside the fracture is directly modeled in fracture cells on a coarse grid, providing the ability to resolve transient effects inside the fracture. As an example, a problem of the two-phase flow in the heterogeneous isotropic reservoir with two hydraulic fractures is reviewed. Simulation results obtained by the upscaling procedure are shown to be significantly more accurate than the ones obtained by the classical Embedded Discrete Fracture Model (EDFM) method.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Timur Kireev
AU  - Guzel Bulgakova
PY  - 2019/12
DA  - 2019/12
TI  - Flow-Based Upscaling for Voronoi Grid near a Hydraulic Fracture
BT  - Proceedings of the 21st International Workshop on Computer Science and Information Technologies (CSIT 2019)
PB  - Atlantis Press
SP  - 23
EP  - 26
SN  - 2589-4900
UR  - https://doi.org/10.2991/csit-19.2019.4
DO  - 10.2991/csit-19.2019.4
ID  - Kireev2019/12
ER  -