胜利典型地质模型的地震正演

以模型和地震正演获得的数据体为基础的研究可推动地震方法的发展与创新。根据胜利典型地质模型的构造特点,提出了变密度声波方程交错网格高阶差分正演方法。分析了方法的数值频散问题,讨论了其稳定性,利用特征分析法构造了声波吸收边界条件。对地质模型的地震正演模拟结果表明,本文给出的声波方法对复杂地质构造具有较强的适应性,模拟数据体精度高、质量好,可推广应用。

The seismic inversion of typical geologic model of Shengli Oilfield

The development and innovation of seismic exploration methods can be put forward by the research based on the data volumes generated from the model and seismic forward modeling. The variable density acoustic equation staggered mesh high order difference forward modeling are presented according to the structural features of the typical Shengli geologic model. The numerical dispersion in the method and its stability are analyzed, and the boundary conditions of acoustic absorption are constructed by using characteristic analysis. The results of seismic forward modeling for the geologic model shows that the method is of better adaptability for complex geologic structure, high precision volumes and good quality, it can be generalized and applied.