Casing Design Wizard
The casing wizard walks you through loads and design factors, then filters the API spec library to casing that passes burst, collapse and tension.
Formulas
Burst DF
DF = Burst rating / Max burst load ≥ 1.1Collapse DF
DF = Collapse rating / Max collapse load ≥ 1.125Tension DF
DF = Joint strength / Buoyed weight ≥ 1.6Worked example
GIVEN
- Intermediate string to 8,000 ft
- Max burst load 5,500 psi
WORKING
- Required burst rating = 5,500 × 1.1 = 6,050 psi
- 9-5/8" 47# N-80 (6,870 psi) passes
Select 9-5/8" 47# N-80 if collapse and tension also pass
FAQ
Which design factors does it use?
Common defaults are pre-filled; change them to match your company standard.
Run it with your well data
Field & Metric units, works offline, save and share results with your crew.
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Reference only. Always verify against your company procedures and well-control certification.