Stress perturbations near a fault are of great importance for fracturing and drilling design in petroleum engineering. Gravitational, tectonic, and earth structure related effects are major concerns for in-situ stresses determinations. The stress magnitude change, principal stress rotations and the range of these changes can be crucial for fracturing propagation, their geometry change, and ultimately the productivity. A field case is studied, focusing on quantified stress perturbations, the procedure for far field stress determination, and stress redistribution near a hydraulic tip for re-directed propagation analyses.

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