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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。
Affected by the regional tectonic stress, the drillability index is used to predict formation pressure error during drilling. The formation pressure predicted by the drillability index method is compensated by analyzing the relationship between formation fracture pressure and tectonic stress, and the formation pressure is reduced error.