DOI: 10.5176/2251-3353_GEOS13.08
Authors: Iftikhar Ahmed Satti, Deva Ghosh and Wan Ismail Wan Yusoff
Abstract: This paper represents a review on published literature and experimental work on overpressure prediction. Overpressure Prediction provides magnitudenal estimates of pore pressure across reservoirs, fields and also at the basinal scale. Development of such overpressures means that fluid movement in the pores is retarded both vertically and laterally. Detailed knowledge of lithology, rock history, and pressure mechanism is important for overpressure prediction. Equivalent Depth Method, Eaton Ratio Method, Bowers Method, Millers Method and Tau Method are commonly used for overpressure prediction. These methods work well where cause of overpressure is undercompaction mechanism and need development to predict overpressure where other mechanisms are also active. P-wave interval velocities are also used for overpressure prediction but their result is unreliable at greater depth in high pressure high temperature (HPHT) environment especially where gas clouds are present in the sub surface.
Keywords: Overpressure, High Pressure High Temperature (HPHT), Mechanism Analysis
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