A case study of determining orientations of in-situ horizontal principal stresses based on electrical images of borehole failures at a deep drilling project

W. Lin, E. C. Yeh, W. Soh, M. Kinoshita, H. Ito, J. H. Hung

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

    2 Citations (Scopus)

    Abstract

    Orientations of in-situ horizontal principal stresses were determined by using both drilling induced borehole compressive failures (breakouts) and tensile fractures from electrical images obtained in the Hole-B of Taiwan Chelungpu-fault Drilling Project (TCDP). Overall, the orientation of the in-situ maximum horizontal principal stress SHmax is parallel to the dip direction of rock formations in the studied depth of 950-1350 m. However, S Hmax orientations in the depth of 1130 m and 1190 m seem to be perpendicular to the dip direction of the formations.

    Original languageEnglish
    Title of host publicationProceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006 - Eurock 2006 Multiphysics Coupling and Long Term Behaviour in Rock Mechanics
    PublisherTaylor and Francis/ Balkema
    Pages625-630
    Number of pages6
    ISBN (Print)0415410010, 9780415410014
    DOIs
    Publication statusPublished - 2006
    EventInternational Symposium of the International Society for Rock Mechanics, Eurock 2006 - Eurock 2006 Multiphysics Coupling and Long Term Behaviour in Rock Mechanics - Liege, Belgium
    Duration: 2006 May 92006 May 12

    Publication series

    NameProceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006 - Eurock 2006 Multiphysics Coupling and Long Term Behaviour in Rock Mechanics

    Other

    OtherInternational Symposium of the International Society for Rock Mechanics, Eurock 2006 - Eurock 2006 Multiphysics Coupling and Long Term Behaviour in Rock Mechanics
    Country/TerritoryBelgium
    CityLiege
    Period2006/05/092006/05/12

    ASJC Scopus subject areas

    • Geophysics

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