论文部分内容阅读
裂缝系统的形成常常受到构造运动及其作用强度的影响。裂缝的产生同构造应力场分布密切相关,构造应力场的作用效果又依赖于地层的岩石物性特征。本文从裂逢形成的外因———裂缝形成的古构造应力场出发,根据弹性力学理论,利用连续介质有限元数值模拟法和岩石破裂准则,研究某古潜山储层裂缝的方位、密度分布。运用该技术较为成功地预测了研究区内裂逢发育带的宏观平面分布
The formation of a fracture system is often influenced by the tectonic movement and its intensity of action. The occurrence of cracks is closely related to the distribution of tectonic stress field. The effect of tectonic stress field depends on the petrophysical characteristics of the formation. In this paper, starting from the external tectonic stress field formed by the fissure, according to the elastic mechanics theory, the finite element numerical simulation method and the rock failure criterion are used to study the azimuth and density distribution of fractures in an ancient buried hill reservoir . Using this technique, we successfully predicted the macroscopic plane distribution