Detection and quantitative evaluation of overpressured subsurface formations are critical to exploration, drilling, and production operations involving hydrocarbon and geothermal resources. Hence, an interdisciplinary technical team approach is required to optimize the safety, engineering, and financial aspects of operating in such hostile sub-surface environments (Fertl, 1976).
Worldwide experience indicates a significant correlation between the presence and magnitude of formation pressures and the shale/sand Ratio of sedimentary sections. The distribution of oil and gas is related to regional and local subsurface pressure and temperature environments. Knowledge of the expected pore Pressure and Fracture Gradients is the basis for (1) efficiently drilling wells with correct mud weights, (2) properly designing casing programs, and (3) completing wells effectively and safely, allowing for killing the well without excessive formation damage. In reservoir engineering,...
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Chilingarian, G.V., Fertl, W.H. (1984). Formation pressures, abnormal . In: Finkl, C. (eds) Applied Geology. Encyclopedia of Earth Sciences Series, vol 3. Springer, Boston, MA. https://doi.org/10.1007/0-387-30842-3_23
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DOI: https://doi.org/10.1007/0-387-30842-3_23
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