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从分析井壁围岩的应力出发.建立了地层倾角对地层坍塌压力影响的力学模型和坍塌准则.江苏油田桥7井地层坍塌压力计算实例表明,地层倾角对地层坍塌压力有较大影响,因此在研究地层坍塌压力过程中应充分考虑地层倾角.
Based on the analysis of the stress of surrounding rock, the mechanical model and collapse criterion of the influence of formation dip on formation collapse pressure are established.The calculation example of formation collapse pressure of Qiao-7 well in Jiangsu Oilfield shows that the dip of formation has great influence on the collapse pressure of formation, Stratum dip should be fully considered in the study of formation collapse pressure.