Casing Burst & Collapse Calculator
Calculate burst rating, collapse resistance, and body tensile strength for API casing strings using Barlow's equation and API 5C3 methods.
Casing Properties
Burst = 0.875 × 2 × Yp × t / OD (Barlow)
Burst Rating
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psi (min internal yield)
Collapse Rating
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psi (API collapse)
Tensile Strength
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lbf (body yield)
ID
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D/t Ratio
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Cross Section Area
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Weight (approx)
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Book a free strategy call →Understanding Casing Burst & Collapse
Casing design ensures the wellbore maintains structural integrity throughout the life of a well. The three primary failure modes are burst (internal pressure exceeding strength), collapse (external pressure exceeding resistance), and tension (axial load exceeding body yield). Each has a design factor (safety factor) that accounts for uncertainties in loading and material properties.
Burst pressure is calculated using Barlow's equation with a 0.875 wall thickness factor per API 5C3 to account for manufacturing tolerances. Collapse resistance depends on the D/t ratio and transitions between yield, plastic, transition, and elastic collapse regimes. Built by Groundwork Analytics.