面向三维层面网格生成的层序分析方法研究

Study of layer order analysis for layer modeling

在地震数据处理中,通过在地震数据体中人工拾取同相轴建立地层三维模型,这一过程费时费力。为解决该问题,提出了一种利用同相轴自动追踪结果的层序分析算法,该方法将自动追踪结果的分类问题,转化为给自动追踪结果排序的问题,并利用最小二乘法求全局最优排序。使用排序的结果可以恢复追踪结果的拓扑信息,从而直接用于层面网格建模。实验结果表明了该方法用于生成层面网格的有效性,其计算结果符合实际的地质状况。

In seismic data processing,create meshes of layers is researched by extracting events manually from the seismic volume data.Event extracting is a manpower-draining work.An ordering algorithm based on the result of event auto-tracking is proposed.The algorithm is a kind of least square optimization method.The order numbers arranged to fragments consisting of points reflect distribution of fragments,thus we can reconstruct the topology of the tracking result and classify the result by the order.With the topology information,it can create model directly from the result.The experiment result proved its validity.