基于断裂似然体属性精细识别小断裂构造

Fine identification of small fault structures based on fault likelihood

小断裂构造解释一直是煤矿采区三维地震勘探追求的目标。将断裂似然体属性(Fault Likelihood)检测技术应用在煤矿采区三维地震构造解释中,不仅能准确反映较大断裂构造的发育特征,同时对小的断裂构造也具有较强的分辨能力,有利于煤矿采区安全生产。本文从断裂似然体属性算法的基本原理出发,简要阐述断裂似然体属性的概念及计算流程,并通过实例成果分析、对比,表明了与常规相干属性、方差属性相比,断裂似然体属性检测小断裂构造的技术在煤矿采区三维地震勘探中的优势。

Interpretation of small fault structure has always been the goal of 3D seismic exploration in coal mining area.The new detection technology based on Fault Likelihood showed that it not only accurately reflected the development characteristics of larger faults,but also had a strong resolution to small faults,which was conducive to safe production in coal mining areas.Based on the basic principle of Fault Likelihood attributes,the concept and calculation process of fracture likelihood attributes were expounded,compared with semblance attributes and variance attributes,Fault Likelihood attributes detection technology of small fault structure had an important application in coal mining area of 3D seismic exploration.