Numerical experiments with a phase-field model show casing eccentricity reduces crack initiation pressure by up to 30% and triggers new inclined crack modes beyond 50% offset, while weak interfaces cause crack deflection along boundaries.
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Phase-field analysis of fracture in heterogeneous wellbore systems: effects of casing eccentricity and cement-formation interface strength
Numerical experiments with a phase-field model show casing eccentricity reduces crack initiation pressure by up to 30% and triggers new inclined crack modes beyond 50% offset, while weak interfaces cause crack deflection along boundaries.