Abstract:Prediction methods for pore pressure (PP) and fracture gradient (FG) developed for conventional resources include the use of normal compaction trends derived from correlations of log-based porosity with vertical effective stress (VES) and translation of pressures from offset wells to prospect locations using fluid densities and contacts. These techniques are less effective in unconventional plays like tight sands and shales because of disconnected fluids and difficulties in distinguishing PP from gas effects o… Show more
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