Development of discrete fracture network model simulator, GeoFlow, for evaluation of three dimensional channeling flow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The discrete fracture network (DFN) model simulation, in which the fracture network can have a natural heterogeneity, is one of the most effective approaches in fluid flow analyses for a fractured reservoir. In the DFN model simulation, the fracture is modeled by a pair of parallel smooth plates although real fractures have rough surfaces. However, numerous field and laboratory observations have suggested that fluid flow through a fracture occurred in specific preferential flow paths (channeling flow) due to a heterogeneous aperture distribution formed by the rough surfaces. The conventional DFN model simulation therefore gives us a serious concern about the reality. To address this concern, we have developed a new concept DFN model simulator, GeoFlow, in which the fracture can have the heterogeneous aperture distribution. Three dimensional fluid flow simulation was performed for a simple fracture network by both the conventional and the new concept DFN models. In the conventional DFN model simulation, the fracture had no aperture distribution, and fluid flow in the fracture plane was quite uniform. On the other hand, the GeoFlow simulation showed formation of three dimensional preferential flow paths in the fracture network. In addition, another GeoFlow simulation showed that productivities of the wells highly depended on their locations even when the wells intersected the same fracture. The productivities were considerably smaller when the wells intersected the regions with smaller aperture conductivities, where the preferential flow paths were difficult to form at the natural condition (no well condition). The results demonstrated occurrence of three dimensional channeling flow in fractured reservoirs, which should be addressed for effective developments of the reservoirs.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - International Petroleum Technology Conference 2009, IPTC 2009
PublisherSociety of Petroleum Engineers
Pages352-357
Number of pages6
ISBN (Print)9781615678150
DOIs
Publication statusPublished - 2009 Jan 1
EventInternational Petroleum Technology Conference 2009, IPTC 2009 - Doha, Qatar
Duration: 2009 Dec 72009 Dec 9

Publication series

NameSociety of Petroleum Engineers - International Petroleum Technology Conference 2009, IPTC 2009
Volume1

Other

OtherInternational Petroleum Technology Conference 2009, IPTC 2009
CountryQatar
CityDoha
Period09/12/709/12/9

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Fuel Technology

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    Ishibashi, T., Watanabe, N., Hirano, N., Okamoto, A., & Tsuchiya, N. (2009). Development of discrete fracture network model simulator, GeoFlow, for evaluation of three dimensional channeling flow. In Society of Petroleum Engineers - International Petroleum Technology Conference 2009, IPTC 2009 (pp. 352-357). (Society of Petroleum Engineers - International Petroleum Technology Conference 2009, IPTC 2009; Vol. 1). Society of Petroleum Engineers. https://doi.org/10.2523/13143-ms