三维复杂断层建模关键算法研究

THE KEY ALGORITHMS RESEARCH OF 3D COMPLEX FAULT MODELING

断层是一种重要的地质构造现象,对油气的运移、成矿作用等具有较大影响。断层建模是三维地质建模的基础,断层模型准确性影响地质结构建模和属性建模质量,因此,三维复杂断层建模研究具有重要的意义。基于断层点集数据建立三维断层面网格模型,保证几何拓扑关系一致性,可以真实反映断层展布情况。在先验地质知识的基础上,判断和处理断层之间的接触关系,自动生成符合先验知识的三维断层网格化模型,减少了人工复杂断层建模工作量,提高了三维复杂断层建模效率。

Fault is an important geological structure,which has great influence on hydrocarbon migration and mineralization.Fault modeling is the basis of three-dimensional geological modeling,and the accuracy of fault modeling affects the quality of geological structure modeling and attribute modeling.Therefore,the study of 3D complex fault modeling is meaningful.Based on the fault points data,three-dimensional fault grid model which ensured the consistency of the geometric topological relations was established.It could reflect the fault distribution.Based on prior geological knowledge,contact relationship between faults were judged and processed to automatically generate 3D fault mesh models,which reduced artificial workload of complex fault modeling and improves the efficiency of 3D complex fault modeling.