Overpressure prediction in shales
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Authors
Han, T.
Pervukhina, Marina
Clennell, M.
Date
2014Type
Conference Paper
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Han, T. and Pervukhina, M. and Clennell, M. 2014. Overpressure prediction in shales, in Proceedings of the 76th EAGE Conference and Exhibition 2014: Experience the Energy, Jun 16-19 2014, pp. 2719-2723. Amsterdam: European Association of Geoscientists & Engineers.
Source Title
76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014
ISBN
School
Department of Exploration Geophysics
Collection
Abstract
Accurate overpressure detection and prediction is essential to the scientific understanding of the history and safe engineering exploitation of a sedimentary basin. We predict the velocity of shales using the Clay-Plus-Silt (CPS) model from logging measured parameters, the modeled velocity is then used as normal velocity trend to detect and predict overpressure using Eaton equation. The results show that the CPS model predicts accurate velocity in normal-pressure shales, and the modeled shale velocity can be used to detect and predict overpressure more accurately than the established normal velocity trend in overpressured wells.
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