Hence the emphasis will be placed on the practical utilisation of pore pressure in the well planning process. It is hoped that the ideas presented here will help the engineer to better understand lithological columns and deduce potential hole problems before producing a final well plan.
Knowledge of formation pressures is vital to the safe planning of a well. Accurate values of formation pressures are used to design safe mud weights to overcome fracturing the formation and prevent well kicks. The process of designing and selection of casing weights/grades is predominately dependent on the utilisation of accurate values of formation pressure. Cementing design, kick control, selection of wellhead and Xmas trees and even the rig rating are dependent on the formation pressures encountered in the well.
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