【摘要】 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。更多还原

【Abstract】 The method of using data of borehole inclination for analysing tectonic stress field is introduced in this paper on parpose to measure direction of horizontal principal stress and to unterstand geolocal structure. The means is too accurate and its spending is fairly small, so it is easy to use widely.The method mentioned has been used to analyze stress field of North East China, and its direction of the maximum compressive principal stress is nearly east-west. Historically, the upper part of oil layers (over 1200 meters) in Taqin oil field by action of tensile stress, so it results mainly in dip-slip movement. However, on a range of the upper part of oil layers (over 400 meters) in Fuyi oil field there occurs chiefly strike-slip movement. It is more or less alike to the results obtained from the other methods.The modern is compared with the ancient, hori/ontal pricipal stress direction only has very small difference, so the stress field direction isessentially stable.更多还原