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地层压实过程中的静力平衡涉及到异常地层压力的形成和地层压力的计算方法。本文认为经典的特察模型不利于表达孔隙性岩石中微观的静力平衡;有效应力并非与孔隙度有直接对应关系;颗粒应力是岩石骨架中传递的真正应力,而且在纵向上颗粒应力变化比较复杂。这些结论影响到地层压力计算模型中的一些基本假设条件。
The static balance during formation compaction involves the formation of abnormal formation pressure and the calculation of formation pressure. This paper argues that the classical model is not conducive to the expression of micro-static balance in porous rocks; the effective stress is not directly related to the porosity; the particle stress is the true stress transferred in the rock skeleton, and the variation of particle stress in the longitudinal direction complex. These conclusions affect some basic assumptions in the formation pressure calculation model.