张家垛油田地应力分布规律研究

张家垛油田断层发育较好，发生的复杂情况比较多。钻井过程中阻、卡频发，井壁失稳。通过方法优选采用岩石声发射Kaiser效应试验法来求取适合张家垛油田的构造应力系数，同时结合测井资料利用分层地应力的解释模型得出该油田地层地应力的分布规律。所得到的该油田的地应力分布规律情况为下一步掌握地层三压力剖面，并最终确定安全泥浆密度窗口提供依据。

Study on the Law of Ground Stress Distribution in Zhangjiaduo Oilfield

The fault development of Zhangjiaduo oilfield is better, there are many complex conditions in the process of drilling, such as drill pipe sticking, borehole instability and so on. In this paper, Kaiser effect of acoustic emission was used to get suitable structural stress coefficient of Zhangjiaduo oil field, the distribution law ofin-situ stress was obtained combined with logging data by using the oil interpretation model of stratified stress. The distribution law of in-situ stress can provide basis for mastering three formation pressure profiles and ultimately determining the safety density window.