摘要： 受区域构造应力影响，钻井过程中采用可钻性指数法预测地层压力误差较大，通过分析地层破裂压力与构造应力之间的关系，来补偿可钻性指数法预测的地层压力，减小了误差。

Abstract: Affected by the regional tectonic stress, big errors may make by using drillability index to predict formation pressure in process of drilling. This paper analyzed the relation between formation fracture pressure and the tectonic stress, by which compensates predicted formation pressure from drillability index, thus the errors are reduced

中图分类号: 

• TE271