Projection-based Embedded Discrete Fracture Model (pEDFM)

Matei Tene, Sebastian Bosma, Mohammed S. Al Kobaisi, Hadi Hajibeygi

Research output: Contribution to journalArticleScientificpeer-review

80 Citations (Scopus)
49 Downloads (Pure)

Abstract

This work presents a new discrete fracture model, namely the Projection-based Embedded Discrete Fracture Model (pEDFM). Similar to the existing EDFM approach, pEDFM constructs independent grids for the matrix and fracture domains, and delivers strictly conservative velocity fields. However, as a significant step forward, it is able to accurately model the effect of fractures with general conductivity contrasts relative to the matrix, including impermeable flow barriers. This is achieved by automatically adjusting the matrix transmissibility field, in accordance to the conductivity of neighboring fracture networks, alongside the introduction of additional matrix-fracture connections. The performance of pEDFM is investigated extensively for two- and three-dimensional scenarios involving single-phase as well as multiphase flows. These numerical experiments are targeted at determining the sensitivity of the model towards the fracture position within the matrix control volume, grid resolution and the conductivity contrast towards the matrix. The pEDFM significantly outperforms the original EDFM and produces results comparable to those obtained when using DFM on unstructured grids, therefore proving to be a flexible model for field-scale simulation of flow in naturally fractured reservoirs.
Original languageEnglish
Pages (from-to)205-216
JournalAdvances in Water Resources
Volume105
DOIs
Publication statusPublished - Jul 2017

Keywords

  • Fracture modelling
  • Embedded discrete fracture model
  • Fractured reservoirs
  • Heterogeneous geological properties
  • Flow in porous media

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  • Datasets

    Deterministic fracture network models from the Potiguar basin, Brazil

    Bisdom, K. (Creator), Bertotti, G. (Creator), Bezerra, F. H. R. (Creator), van Eijk, M. (Creator), Van der Voet, E. (Creator) & Reijmer, J. (Creator), TU Delft - 4TU Centre for research data, 2017

    Dataset

    Fracture patterns in the Jandeira Fm. (NE Brazil)

    Bertotti, G. (Creator) & Bisdom, K. (Creator), TU Delft - 4TU Centre for research data, 2013

    Dataset

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