Fluid Flow Characterization Framework for Naturally Fractured Reservoirs using Small Scale Fully Explicit Models

Daniel Lorng Yon Wong, Florian Doster, Sebastian Geiger, Eddie Francot, Francois Gouth

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Abstract

Flow modelling challenges in fractured reservoirs have led to the development of many simulation methods. It is often unclear which method should be employed. High-resolution discrete fracture and matrix (DFM) studies on small-scale representative models allow us to identify dominant physical processes influencing flow. We propose a workflow that utilizes DFM studies to characterize subsurface flow dynamics. The improved understanding facilitates the selection of an appropriate method for large-scale simulations. Validation of the workflow was performed via application on a gas reservoir represented using an embedded discrete fracture model, followed by the comparison of results obtained from hybrid and dual-porosity representations against fully explicit simulations. The comparisons ascertain that the high-resolution small-scale DFM studies lead to a more accurate upscaled model for full field simulations. Additionally, we find that hybrid implicit–explicit representations of fractures generally outperform pure continuum-based models.

Original languageEnglish
Pages (from-to)399-434
Number of pages36
JournalTransport in Porous Media
Volume134
Issue number2
Early online date21 Jul 2020
DOIs
Publication statusPublished - Sep 2020

Keywords

  • Dual porosity
  • Embedded discrete fracture model
  • Fractured reservoirs
  • Hybrid models
  • Multiphase flow

ASJC Scopus subject areas

  • Catalysis
  • Chemical Engineering(all)

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