Numerical Model of Shale Compaction, Aquathermal Pressuring, and Hydraulic Fracturing: ABSTRACT (original) (raw)

A numerical model addressing shale compaction, aquathermal pressuring, and hydraulic fracturing has been developed. This model incorporates the effects of compaction disequilibrium and aquathermal pressuring, using heat conduction for temperature profiles. The findings indicate that while compaction disequilibrium accounts for pressure variations in Gulf Coast sections, aquathermal pressuring can elevate fluid pressures beyond lithostatic levels, necessitating fluid release through hydraulic fracturing. The model effectively explains observed correlations in shale density, excess pressure, and thermal gradients, additionally exploring stress conditions for fracture initiation.