Paleozoic stress profiles reveal S hmin/S v range of 0.74–0.84, while S H m ax/S v varies between 1.1 and 1.33. Rock elastic property-based approach is employed to model the magnitudes of minimum (S hmin) and maximum horizontal stress (S Hmax) components, which were calibrated with leak off test/minifrac and breakout widths, respectively. Vertical stress (S v) modeled from the bulk-density data indicates an average of 1.02 PSI/feet gradient. A pore fluid pressure gradient of 0.56 PSI/feet is interpreted from the in-situ measurements in the Paleozoic reservoir units.
In this work a contemporary stress field of the Saharan platform has been evaluated using the dataset from recently drilled wells in El Agreb, El Gassi and Hassi Messaoud fields. Central Algerian Sahara hosts many prolific hydrocarbon accumulations in the Paleozoic successions.
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