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目前构造应力场的研究主要是基于平面的二维分析,随着油气成藏过程三维模拟的发展,应力场的三维数值模拟显得越来越重要.从三维空间角度出发,分析了应力场的有限元模拟与求解的整个过程.基于不规则六面体单元的角点网格数据模型,对有限元求解法进行了分析与研究并提出计算方法.基于不规则角点网格数据模型的三维构造应力场有限元计算方法是本文的创新点.最后用上述方法对东营凹陷的牛庄-王家岗区域三维应力场进行了实际模拟计算,计算结果相比于其他数据模型更符合实际情况.
At present, the research of tectonic stress field is mainly based on two-dimensional plane analysis. With the development of three-dimensional simulation of hydrocarbon accumulation process, the three-dimensional numerical simulation of stress field becomes more and more important. From the perspective of three-dimensional space, Element simulation and solving of the problem.Analysed and researched the finite element method based on the corner point grid data model of irregular hexahedron element and proposed the calculation method.The 3D structure stress field based on the irregular corner point grid data model The finite element method is the innovation point of this paper.At last, the 3D stress field of Niuzhuang-Wangjiagang region in Dongying Depression is simulated by the above method, and the calculation results are more in line with the actual situation than other data models.