Impact of 3D channeling flow on well productivity in the yufutsu oil/gas field

Takuya Ishibashi, Noriaki Watanabe, Tetsuya Tamagawa, Nobuo Hirano, Atsushi Okamoto, Noriyoshi Tsuchiya

Research output: Contribution to conferencePaperpeer-review

Abstract

In the Yufutsu oil/gas field in Hokkaido, Japan, approximately three-orders-of-magnitude difference in productivity was observed between two wells. However, it was not possible to reproduce the huge difference in well productivity by a conventional discrete fracture network (DFN) model simulation, despite a reliable fracture network model based on 3D seismic data, acoustic emission data, stress measurement, and well logging. Therefore, fluid flow simulations were conducted using a novel DFN model (the GeoFlow model), in which the heterogeneous aperture distribution was considered for the critically stressed fractures. As a result, it was demonstrated that conventional DFN models overestimated real area of flow paths by 3D channeling flow. Moreover, the huge difference in well productivity was successfully reproduced, which demonstrated that well understanding of 3D channeling flow in a fractured reservoir was one of the keys to predict well productivity.

Original languageEnglish
Publication statusPublished - 2012 Jan 1
Event18th Formation Evaluation Symposium of Japan 2012 - Chiba, Japan
Duration: 2012 Sep 272012 Sep 28

Other

Other18th Formation Evaluation Symposium of Japan 2012
CountryJapan
CityChiba
Period12/9/2712/9/28

ASJC Scopus subject areas

  • Economic Geology
  • Geochemistry and Petrology
  • Geology
  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology

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