“…The mechanisms causing overpressures include, compaction disequilibrium, gas cracking/hydrocarbon generation, aquathermal expansion, compression due to tectonics, transformation of clay minerals (e.g., illitization), hydraulic head, and hydrocarbon buoyancy (Yassir et al, 2002;Gutierrez et al, 2006;Zhang, 2013). The majority of abnormal pressure events involving compaction disequilibrium have been observed in geologically younger basins with rapid sedimentation (Satti et al, 2015). Examples for these cases include U.S. Gulf Coast, Beaufort Sea, Niger Delta, Mackenzie Delta, Adriatic Sea, North Sea, Mahakam delta, Malay Basin, Nile Delta, Eastern Venezuelan Basin (Trinidad), and the Potwar Basin of Pakistan (Heppard et al, 1998;Law and Spencer, 1998;Nelson and Bird, 2005;Morley et al, 2011).…”