Detection of Abnormal Pressures from Well Logs

  • Troyee DasguptaEmail author
  • Soumyajit Mukherjee
Part of the Advances in Oil and Gas Exploration & Production book series (AOGEP)


Continuous attributes through depth are obtained using wireline logs and logging while drilling. A number of well logging techniques enables detection of overpressure zones. How porosity link with pore pressure is the main key to detect the abnormal pressure. Abnormal pressure, i.e., overpressure and under pressure, can be quantified by noting how much the depth-wise log-data for a rock type varies from that of a shale. Sonic logs can better detect abnormal pressure zones than the neutron and the density logs. Effective stress reduction opens connecting pores easier than the storage pores. This chapter explains pore pressure mechanisms using cross plots of wireline logs.


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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Geology, Geophysics and Petrophysics (Exploration)Reliance Industries LimitedNavi MumbaiIndia
  2. 2.Department of Earth SciencesIndian Institute of Technology BombayMumbaiIndia

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