Abstract
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.
The original version of this chapter was revised: The figure 4.10 was inadvertently published without proper permissions. The correction to this chapter is available at 10.1007/978-3-030-13442-6_8
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Dasgupta, T., Mukherjee, S. (2020). Detection of Abnormal Pressures from Well Logs. In: Sediment Compaction and Applications in Petroleum Geoscience. Advances in Oil and Gas Exploration & Production. Springer, Cham. https://doi.org/10.1007/978-3-030-13442-6_4
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DOI: https://doi.org/10.1007/978-3-030-13442-6_4
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