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利用声发射Ｋａｉｓｅｒ效应对陕甘宁盆地Ｇ地区埋藏深度１４００～１７００ｍ的延长组储层进行了地应力和模拟地层条件下的岩石力学性质测试，从而获得了该地区延长组储层天然三维应力及水平主应力方向。在此基础上，根据地层条件下岩石泊松比计算了该区的现今构造应力，最大构造应力（ＮＥ方向）的平均值在６．１ＭＰａ左右，在中国西北地区属正常范围。
The Kaiser effect of acoustic emission was used to test the rock mechanics properties under the conditions of geostress and simulated formation in the Yanchang Formation buried at depth 1400 ~ 1700m in the G area of Shaan-Gan-Ning basin and the natural three-dimensional stress of the Yanchang Formation reservoir was obtained. Horizontal principal stress direction. Based on this, the current tectonic stress in this area is calculated according to the rock Poisson’s ratio. The average maximum tectonic stress (NE direction) is about 6.1 MPa, which is in the normal range in northwestern China.