Influence factors of hole stability are analysed by means of step regression analysis method, and they can be sorted by step sizing factor.

用逐步回归法对影响井壁稳定性的因素进行了分析，通过逐步筛选因子从诸多因素中找出了对井壁坍塌有重要影响的因素。

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Influence factors of hole stability are analysed by means of step regression analysis method, and they can be sorted by step sizing factor.

用逐步回归法对影响井壁稳定性的因素进行了分析，通过逐步筛选因子从诸多因素中找出了对井壁坍塌有重要影响的因素。

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