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Casing Wear Estimator
Estimate casing wear volume and remaining wall thickness from drill string rotation, contact force, and wear coefficient. Critical for casing integrity assessment.
Inputs
From dogleg severity and drill string tension
Typical: 0.2–1.0 × 10⁻¹⁰ in²/lbf
5.5" 20# = 0.415"
Results
Wear Depth
--
in
Remaining Wall
--
in
% Wall Worn
--
%
Integrity Status
--
Equations
Casing Wear: Based on Archard's wear model
Wear depth: d = K × F × (rpm × t × 60 × π × OD_dp / 12) where K = wear coefficient
Remaining wall: t_rem = t_original - d_wear
Critical threshold: > 20% wear requires engineering assessment; > 40% typically requires remediation
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