A method was presented to identify and calculate inversely the casing external loads by the displacement data of the casing wall.The application of the proposed method was discussed.

• 基于套管内壁变形的实测资料，利用阻尼最小二乘法建立了套管外载反分析模型，提出了确定套管外载的反分析方法，讨论了反分析法的应用。