Aiming at the problem of equivocal correction coefficient formulas of casing strength quoted in the American Petroleum Institute(API),the regularities and distribution of parameters for casing properties of API were discussed.

• 针对美国石油学会(API)制定的套管强度计算公式中引用的若干个修正系数理论意义不明确的问题,讨论了API套管多个属性参量的分布规律和分布参数。