准确预测地层孔隙压力是安全钻井,防止井壁失稳的关键。针对碳酸盐岩地层孔隙压力预测难度大这一问题,在分析碳酸盐岩地层特性的基础上,运用Eation法和有效应力法,通过以L1井为例,计算讨论了这两种方法在碳酸盐岩地层压力预测计算时的适用性。通过与实测值的比较分析,认为Eaton法对于碳酸盐岩地层压力的计算误差较大,不能准确计算其地层压力,而有效应力法更适用于以泥质含量少为特点的碳酸盐岩地层。 Accurately predicting formation pore pressure is the key to safely drilling and preventing the instability of the borehole wall. In view of the difficulty in predicting the pore pressure of carbonate rock formation, based on the analysis of the characteristics of carbonate rock formation, by using Eation method and effective stress method, taking L1 well as an example, Applicability in prediction of carbonate formation pressure. By comparison with the measured values, it is considered that the Eaton method has large calculation errors for carbonate formation pressure and can not accurately calculate the formation pressure. However, the effective stress method is more suitable for carbonate rocks characterized by less shale content Strata.