Pore Pressure Prediction for Shale Formations Using Well Log Data

Pore pressure in any sedimentary formation is defined as the pressure of the fluid contained in the pore space of the rocks, and can be either normal or abnormal pressure. Abnormal pressure is sub-classified into abnormal high pressure (overpressure) and sub-normal pressure. Knowledge of pore pressu...

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Main Authors: Ahmad, A., Rezaee, M. Reza
Format: Book Chapter
Published: John Wiley & Sons 2015
Subjects:
Online Access:http://hdl.handle.net/20.500.11937/4588
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author Ahmad, A.
Rezaee, M. Reza
author_facet Ahmad, A.
Rezaee, M. Reza
author_sort Ahmad, A.
building Curtin Institutional Repository
collection Online Access
description Pore pressure in any sedimentary formation is defined as the pressure of the fluid contained in the pore space of the rocks, and can be either normal or abnormal pressure. Abnormal pressure is sub-classified into abnormal high pressure (overpressure) and sub-normal pressure. Knowledge of pore pressure regimes in any sedimentary basins is an integral part of the formation evaluation process in gas shale formations (Gretener 1979). Appropriate evaluation of pore pressure is crucial for drilling and completion planning (Tingay et al. 2003). In this chapter, definitions of important pore pressure related terms are presented first, and then overpressure generating mechanisms are explained in detail followed by overpressure estimation methods. In addition, the relationships between pore pressure distribution and tectonic elements in sedimentary basins are presented herein. These relationships were observed on in a recent study that was conducted on the potential gas shale formations in the Perth Basin, Western Australia. Finally, the origins of overpressure in these shale intervals are explained and some examples are presented.
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spelling curtin-20.500.11937-45882017-01-30T10:40:12Z Pore Pressure Prediction for Shale Formations Using Well Log Data Ahmad, A. Rezaee, M. Reza Prediction Pore Pressure Well Log Data Shale Formations Pore pressure in any sedimentary formation is defined as the pressure of the fluid contained in the pore space of the rocks, and can be either normal or abnormal pressure. Abnormal pressure is sub-classified into abnormal high pressure (overpressure) and sub-normal pressure. Knowledge of pore pressure regimes in any sedimentary basins is an integral part of the formation evaluation process in gas shale formations (Gretener 1979). Appropriate evaluation of pore pressure is crucial for drilling and completion planning (Tingay et al. 2003). In this chapter, definitions of important pore pressure related terms are presented first, and then overpressure generating mechanisms are explained in detail followed by overpressure estimation methods. In addition, the relationships between pore pressure distribution and tectonic elements in sedimentary basins are presented herein. These relationships were observed on in a recent study that was conducted on the potential gas shale formations in the Perth Basin, Western Australia. Finally, the origins of overpressure in these shale intervals are explained and some examples are presented. 2015 Book Chapter http://hdl.handle.net/20.500.11937/4588 John Wiley & Sons restricted
spellingShingle Prediction
Pore Pressure
Well Log Data
Shale Formations
Ahmad, A.
Rezaee, M. Reza
Pore Pressure Prediction for Shale Formations Using Well Log Data
title Pore Pressure Prediction for Shale Formations Using Well Log Data
title_full Pore Pressure Prediction for Shale Formations Using Well Log Data
title_fullStr Pore Pressure Prediction for Shale Formations Using Well Log Data
title_full_unstemmed Pore Pressure Prediction for Shale Formations Using Well Log Data
title_short Pore Pressure Prediction for Shale Formations Using Well Log Data
title_sort pore pressure prediction for shale formations using well log data
topic Prediction
Pore Pressure
Well Log Data
Shale Formations
url http://hdl.handle.net/20.500.11937/4588