The effects of outer diameter/wall thickness,material yield strength,ovality,eccentricity and residual stress on the casing collapse resistance are analyzed in this paper.

• 为提高套管挤毁压力预测精度,应用统计方法对213根套管全尺寸挤毁试验数据进行了方差分析,研究了外径不圆度、壁厚不均度、残余应力等因素对套管抗挤强度的影响。