高精度三维复杂断层建模方法及应用

High accuracy 3D complex fault modeling approach and application

利用常规建模方法建立复杂构造模型,需对断层模型做近似处理,往往导致断层模型与构造解释成果匹配度降低,影响模型精度。为此,应用Petrel建模软件及其方法模块,采用角点网格方法与构造框架方法交互式建模的技术思路,通过判定、落实削截断层相互接触关系,对断层模型组合进行相交处理,并优化各断层模型面参数,建立高精度三维复杂断层模型。用此方法完成中亚A油田全区断层模型的优化,取得了很好的效果,也为各类复杂断块油田高精度断层建模工作提供了有效方法。

Complex structural model is built by conventional geological modeling methodology with approximation treatment of fault model,which usually decreases the precision between fault model and structural interpretation results,and affects model accuracy.Therefore,Petrel modeling software and its method module is chosen.Based on an interactive approach of integrating both corner point gridding and structural framework modeling methods,with the determination of connectionship for each pair of truncate faults,intersecting treatment is done on fault model combination,meanwhile crucial parameters for each fault plane are optimized.Finally,the high accuracy 3D complex fault model is built.The method adopted for A oilfield in Central Asia accomplishes the optimization of fault model for the whole block,shows remarkable improvement,and provides a high accuracy structural modeling method for various complex fault oilfields.