关键词: 地层压力, 挤压构造作用, 地应力, 构造压力因子, 预测模型

Abstract: During oil exploring and drilling process,it is very important to predict formation pressure accurately,because it can supply pressure technique data for drilling parameter select and well structure design.There are over-thrust folding structure and compression structure in the formations of MR Oilfield,and there exists the overpressure in the drilled formation.However,there are no abnormal expressions in the seismic interval velocity and logging information of interval travel time.There shows serious error using the traditional prediction methods in this block.The effect of compression structure stress is the main reason for producing overpressure.The relative compression structure stress and structural pressure factors were cited to correct the traditional prediction models.The applications of the corrected prediction models on site showed that the predictive accuracy of formation pressure could be greatly improved.

Key words: formation pressure, compression structure, formation stress, structural pressure factor, prediction model