关于岩石侧压系数的认识误区

发布时间：2018-05-29 19:42

  本文选题：岩石 + 流体　； 参考：《西南石油大学学报(自然科学版)》2017年03期

【摘要】：针对石油工程中岩石侧压系数的预测问题,研究了介质的水平应力形成机理与侧压系数的计算方法,分析了水、土与岩石3种介质水平应力的区别与侧压系数的工程意义,并探讨了岩石的侧压系数预测方法。研究认为由于介质的结构与流动性不同,水和土的水平应力都是自重产生的,这与岩石的水平应力产生机理完全不同,岩石的水平应力主要是构造作用产生的。由于构造作用的强弱差异大,岩石的水平应力变化范围较大,侧压系数在-∞~∞,因此岩石的侧压系数不能沿用土介质侧压系数的计算方法。同时,岩石的侧压系数是通过实测地应力得到的,其预测结果并没有实际意义。
[Abstract]:In view of the prediction problem of rock lateral pressure coefficient in petroleum engineering, the formation mechanism of horizontal stress and the calculation method of lateral pressure coefficient of medium are studied, and the difference of horizontal stress between water, soil and rock and the engineering significance of lateral pressure coefficient are analyzed. The prediction method of rock lateral pressure coefficient is also discussed. It is considered that the horizontal stress of water and soil is generated by self-weight because of the different structure and fluidity of the medium, which is completely different from the mechanism of horizontal stress in rock, and the horizontal stress of rock is mainly caused by tectonism. The lateral pressure coefficient of rock can not be calculated by the calculation method of soil medium because of the great difference between tectonic action and horizontal stress, and the lateral pressure coefficient is in the range of-鈭，

本文编号：1952146