Examination of commercial casing collapse strength under axial loading

Journal Article · Wed Dec 01 00:00:00 EST 1982 · J. Energy Resour. Technol.; (United States)

DOI:https://doi.org/10.1115/1.3230426· OSTI ID:6023557

Tamano, T; Inoue, Y

Collapse testing of commercial API grade 7-in. casing was conducted under combined external pressure and axial load. The measured collapse pressure was considerably higher than the API minimum value, especially for the large D/t ratio, as expected. For the casings of large D/t ratio, the measured collapse pressure was a little smaller than the theoretical value for ideal pipe and the axial stress had a slight effect on the collapse pressure. In the range of plastic collapse, the measured collapse pressure was not less than the yield pressure for ideal pipe except near the boundary of the elastic and plastic collapse ranges.

• Research Organization: Metal Working Technology Lab., Products R and D Lab., Nippon Steel Corporation, Sagamihara, Kanakawa-Ken
• OSTI ID: 6023557
• Journal Information: J. Energy Resour. Technol.; (United States), Vol. 104:4
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
WELL CASINGS
DESTRUCTIVE TESTING
DYNAMIC LOADS
AXIAL SYMMETRY
ELASTICITY
PIPES
PLASTICITY
PRESSURE EFFECTS
STRESS ANALYSIS
MATERIALS TESTING
MECHANICAL PROPERTIES
SYMMETRY
TENSILE PROPERTIES
TESTING
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