1887

Abstract

Summary

Issues and challenges for development of fractured oil/gas reservoirs involve (1) difficulty in inferring distribution of fractures away from boreholes, while the fractures crossing the boreholes are detectable by borehole measurements, (2) difficulty in distinguishing flowing fractures from non-flowing fractures, (4) the fact of boreholes having almost no productivity unless they are intersecting fractures of large aperture (termed “mega” fracture). To address above challenges, we collected various scales of fracture relating datasets from Yufutsu oil/gas field in Japan and analyzed them to characterize the fracture system. The studies include multi-scale fracture surveys using cores, borehole images, microseismic monitoring, and 3D seismic survey. Those data-sets are analyzed independently and interpreted in the context of stress environment and integrated to characterize field scale fracture distribution. The results showed that impacts of geomechanics are crucial on fractured basement reservoir for an optimal development. The producing fractures confirmed in the production wells show orientations preferential to shear failure. The major fracture systems interpreted from microseismic distribution also have similar orientations and additionally provide us characteristic fracture spacing. The ant-track outputs from 3D seismic survey provide potential sub-seismic faults and can extrapolate the knowledge extracted from microseismic data to all over the field. Though the study, we recognized the importance of the approach that integrates multi-scale data sources and incorporates geomechanics.

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/content/papers/10.3997/2214-4609.201412636
2015-06-01
2024-04-26
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References

  1. Barton, C. A., M. D.Zoback, and D.Moos
    [1995] Fluid flow along potentially active faults in crystalline rock. Geology, 23, 683–686.
    [Google Scholar]
  2. Kumano, Y., Tamagawa, T. and Tezuka, K.
    [2011] Characterization of productive fractures based on borehole resistivity imaging and geomechanical analysis at Yufutu fractured reservoir. Proc. of SPWLA 52nd Annual Logging Sympojium in Colorado Spring, Paper P.
    [Google Scholar]
  3. Kamitsuji, R., Tezuka, K.
    [2007] Delineation of fracture systems by precise locations and mechanism analysis of microseismic multiplets. EAGE/SEG Research Workshop 2007, Perugia, Italy, 3 – 6 September 2007.
    [Google Scholar]
  4. Tamagawa, T., Tezuka, K. and Tsuchiya, N.
    [2011] Use of a computational fault-extraction process with calibrations to characterize a fractured basement reservoir, Yufutsu, Japan. AAPG Bulletin, 96, 2275–2296.
    [Google Scholar]
  5. Tezuka, K., Namikawa, T., Tamagawa, T., Day-Lewis, A. and Barton, C.A.
    [2002] Roles of the fracture system and state of stress for gas production from the basement reservoir in Hokkaido, Japan. Proc. of SPE Gas Technology Symposium, Calgary, SPE75704.
    [Google Scholar]
  6. Tezuka, k., Kamitsuji, R. and Tamagawa, T.
    [2008] Fractured Reservoir Characterization Incorporating Microseismic Monitoring and Pressure Analysis during Massive Hydraulic Injection. IPTC, Kuala Lumpur, Malaysia, 3–5 December 2008.
    [Google Scholar]
  7. Pedersen, S., Randen, I., T.Sonneland, L. and Steenm, O.
    [2002] Automatic fault extrcation using artificial ants. Expanded Abstract, International Meeting, Society of Exploration Geophysics, 512–515.
    [Google Scholar]
  8. Zoback, M. D.
    [2007] Reservoir Geomechanics, Cambridge University Press, The Edinburgh Building, Cambridge CB2 8RU, UK, Published in the United States of America by Cambridge University Press, New York.
    [Google Scholar]
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