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
Pages625-630
Number of pages6
Publication statusPublished - 2006 Dec 1
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
CountryBelgium
CityLiege
Period06/5/906/5/12

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ASJC Scopus subject areas

  • Geophysics

Cite this

Lin, W., Yeh, E. C., Soh, W., Kinoshita, M., Ito, H., & Hung, J. H. (2006). A case study of determining orientations of in-situ horizontal principal stresses based on electrical images of borehole failures at a deep drilling project. In Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006 - Eurock 2006 Multiphysics Coupling and Long Term Behaviour in Rock Mechanics (pp. 625-630). (Proceedings of the International Symposium of the International Society for Rock Mechanics, Eurock 2006 - Eurock 2006 Multiphysics Coupling and Long Term Behaviour in Rock Mechanics).