论文部分内容阅读
本文介绍了用井斜资料分析构造应力场,获得水平主应力方向及地质构造的方法。该方法经济、精确,很易广泛使用。 作者用这种方法,分析了东北区松辽平原应力场,其最大主压应力方向为近东西向。历史上,大庆油田油层上部(1200米以上)受引张应力作用,以倾向滑动为主。扶余油田油层上部(400米以上)以走向滑动为主。此结果与由其它方法得出的结果大体一致。 近代和古代相比,水平主应力方向仅有很小的差异,应力场方向基本上是稳定的。
This paper presents a method to analyze the tectonic stress field and obtain the horizontal principal stress direction and the geological structure by using the well inclination data. The method is economical, accurate and easy to use. Using this method, the authors analyze the stress field in the Songliao Plain in northeastern China. The direction of maximum principal compressive stress is near east-west. Historically, the upper part of the Daqing oilfield (above 1,200 meters) was subjected to tensile stress and dominated by dip-slip. Fuyu Oilfield upper part (400 meters) to slide the main. This result is in general agreement with the results obtained by other methods. Compared with the ancient times, the horizontal principal stress direction has only a small difference, and the stress field direction is basically stable.