中文摘要：

准确预测碳酸盐岩层地层压力的难度较大，给钻井设计和施工造成不利的影响。针对碳酸盐岩层异常压力成因复杂和不符合压实规律的特征，利用纵波波速与地层物性参数之间关系的综合参数模型，借助川东北普光地区碳酸盐岩层的测井数据，使用逐步回归和多元非线性回归相结合的方法，来预测碳酸盐岩层的地层压力。结果表明，地层压力预测平均误差小于10％，精度满足工程需要。因此，综合参数模型可用于碳酸盐岩层地层压力的预测。

英文摘要：

Accurate prediction of pore pressure in the carbonate strata is very difficult to achieve, which causes unfavorable influence on the drilling design and construction. Aiming at the complicated causes of abnormal pore pressure and disagreement about the compaction law, the comprehensive parameter model, which expresses the relationship between p-wave velocity and formation physical parameters, is used to predict pore pressure in the carbonate strata. Making use of the logging data of carbonates strata in Puguang district, Northeast Sichuan, the comprehensive parameter model is obtained by the combination of stepwise regression and multivariate nonlinear regression. The result shows that the average error is less than 10% , which can ensure engineering requirement. Therefore the comprehensive parameter model is suitable for pore pressure prediction in carbonate strata.