Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Pore pressure/stress coupling in Brunei Darussalam - implications for shale injection

    136956_136956.pdf (5.569Mb)
    Access Status
    Open access
    Authors
    Tingay, Mark
    Swarbrick, R.
    Okpere, E.
    Date
    2003
    Type
    Book Chapter
    
    Metadata
    Show full item record
    Citation
    Tingay, Mark and Hillis, Richard and Morley, Chris and Swarbrick, Richard and Okpere, Eugene. 2003. Pore pressure/stress coupling in Brunei Darussalam - implications for shale injection, in P Van Rensbergen, R R Hillis, A J Maltman & C K Morley (ed), Subsurface Sediment Mobilization. pp. 369-379. Bath UK: Geological Society of London.
    Source Title
    Subsurface Sediment Mobilization
    DOI
    10.1144/GSL.SP.2003.216.01.24
    ISBN
    1-86239-1416
    Faculty
    Department of Applied Geology
    Faculty of Science and Engineering
    WA School of Mines
    Remarks

    Accepted for publication in Subsurface Sediment Mobilization as of 2003.

    URI
    http://hdl.handle.net/20.500.11937/9763
    Collection
    • Curtin Research Publications
    Abstract

    Shale dykes, diapirs and mud volcanoes are common in the onshore and offshore regions of Brunei Darussalam. Outcrop examples show that shale has intruded along both faults and tensile fractures. Conventional models of over pressure-induced brittle failure assume that pore pressure and total stresses are independent of one another. However, data worldwide and from Brunei show that changes in pore pressure are coupled with changes in total minimum horizontal stress. The pore pressure/stress-coupling ratio describes the rate of change of minimum horizontal stress magnitude with changing pore pressure. Minimum horizontal stress measurements for a major offshore field where undepleted pore pressures range from normal to highly overpressured show a pore pressure/stress-coupling ratio of 0.59. As a consequence of pore pressure/stress coupling, rocks can sustain a greater increase in pore pressure prior to failure than predicted by the prevailing values of pore pressure and stress. Pore pressure/stress-coupling may favour the formation of tensile fractures with increasing pore pressure rather than reactivation of pre-existing faults. Anthropogenically-induced tensile fracturing in offshore Brunei supports this hypothesis.

    Related items

    Showing items related by title, author, creator and subject.

    • Investigation of pressure and saturation effects on elastic parameters: an integrated approach to improve time-lapse interpretation
      Grochau, Marcos Hexsel (2009)
      Time-lapse seismic is a modern technology for monitoring production-induced changes in and around a hydrocarbon reservoir. Time-lapse (4D) seismic may help locate undrained areas, monitor pore fluid changes and identify ...
    • Origin and petrophysical log response of overpressures in the Baram Delta province, Brunei.
      Tingay, Mark; Hillis, R.; Swarbrick, R.; Morley, C. (2005)
      The ‘window’ of safe mud weights between pore pressure and fracture pressure is narrower in overpressured sediments than in normally pressured sediments. This ‘window’ also controls the maximum buoyancy pressure, and hence ...
    • A review on the influence of CO2/shale interaction on shale properties: Implications of CCS in shales
      Fatah, Ahmed ; Bennour, Ziad ; Ben Mahmud, Hisham ; Gholami, Raoof ; Hossain, Mofazzal (2020)
      © 2020 by the authors. Carbon capture and storage (CCS) is a developed technology to minimize CO2 emissions and reduce global climate change. Currently, shale gas formations are considered as a suitable target for CO2 ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.