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

    Seismic velocity deviation log: An effective method for evaluating spatial distribution of reservoir pore types

    250242.pdf (2.200Mb)
    Access Status
    Open access
    Authors
    Shirmohamadi, M.
    Kadkhodaie, Ali
    Rahimpour-Bonab, H.
    Faraji, M.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Shirmohamadi, M. and Kadkhodaie, A. and Rahimpour-Bonab, H. and Faraji, M. 2017. Seismic velocity deviation log: An effective method for evaluating spatial distribution of reservoir pore types. Journal of Applied Geophysics. 139: pp. 223-238.
    Source Title
    Journal of Applied Geophysics
    DOI
    10.1016/j.jappgeo.2017.03.001
    School
    Department of Petroleum Engineering
    URI
    http://hdl.handle.net/20.500.11937/50476
    Collection
    • Curtin Research Publications
    Abstract

    Velocity deviation log (VDL) is a synthetic log used to determine pore types in reservoir rocks based on a combination of the sonic log with neutron-density logs. The current study proposes a two step approach to create a map of porosity and pore types by integrating the results of petrographic studies, well logs and seismic data. In the first step, velocity deviation log was created from the combination of the sonic log with the neutron-density log. The results allowed identifying negative, zero and positive deviations based on the created synthetic velocity log. Negative velocity deviations (below − 500 m/s) indicate connected or interconnected pores and fractures, while positive deviations (above + 500 m/s) are related to isolated pores. Zero deviations in the range of [− 500 m/s, + 500 m/s] are in good agreement with intercrystalline and microporosities. The results of petrographic studies were used to validate the main pore type derived from velocity deviation log. In the next step, velocity deviation log was estimated from seismic data by using a probabilistic neural network model. For this purpose, the inverted acoustic impedance along with the amplitude based seismic attributes were formulated to VDL. The methodology is illustrated by performing a case study from the Hendijan oilfield, northwestern Persian Gulf. The results of this study show that integration of petrographic, well logs and seismic attributes is an instrumental way for understanding the spatial distribution of main reservoir pore types.

    Related items

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

    • Study of pore system properties of tight gas sandstones based on analysis of the seismically derived velocity deviation log: A case study from the Perth Basin of western Australia
      Kadkhodaie, R.; Kadkhodaie, Ali ; Rezaee, Reza (2021)
      The Whicher Range field of the Perth Basin includes tight sandstones of the late Permian Willespie Formation with substantial gas reserves. Reservoir properties of these sandstones, in addition to the influence of initial ...
    • 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 ...
    • Elastic properties of carbonates : measurements and modelling
      Bastos de Paula, Osni (2011)
      This thesis is a multi-scale study of carbonate rocks, from the nanoscale and digital rock investigations to the imaging studies of carbonate reservoir analogues. The essential links between these extremes are the carbonate ...
    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.