体属性分析在精细构造研究中的应用
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摘要
有效压制地震资料背景噪音,提高地震资料的分辨能力,是准确落实复杂构造区断裂特征,提高构造解释精度的主要手段之一。通过应用构造导向滤波对地震资料进行解释性处理之后,使地震资料信噪比明显提高,断裂及岩性边界更为清晰。在此基础上利用三维相干体、曲率体等体属性综合分析与解释,可以在很大程度上提高断裂解释精度,有利于精细刻画研究区断裂展布特征及构造特征。
It is one of the main factors in figuring out the complicated fault system and increasing the precision of structural interpretation to efficiently suppress seismic background noise and improve seismic data resolution.It is found that the S/N ratio and faults and lithological boundaries are much higher and clearer after using structural-oriented filtering in processing seismic data,and the fault interpretation precision is greatly improved through C3 coherence cube,curvature,and other attributes analyses and interpretations,which is helpful to characterization of the faults distribution and structural feature.
It is one of the main factors in figuring out the complicated fault system and increasing the precision of structural interpretation to efficiently suppress seismic background noise and improve seismic data resolution.It is found that the S/N ratio and faults and lithological boundaries are much higher and clearer after using structural-oriented filtering in processing seismic data,and the fault interpretation precision is greatly improved through C3 coherence cube,curvature,and other attributes analyses and interpretations,which is helpful to characterization of the faults distribution and structural feature.
引文
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[8]韩翀,纪学武,尹晓贺,等.曲率体属性在碳酸盐岩生物礁储层解释中的应用[J].石油天然气学报(江汉石油学院学报),2010,32(4):243-246.
[2]徐天吉,程冰洁,李显贵,等.地震信号的吸收滤波与储集层含油气性识别[J].新疆石油地质,2009,30(1):117-120.
[3]Chopra S,Marfurt K J.Volumetric curvature attributes add value to3D seismic data interpretation[J].The Leading Edge,2007,26(7):856-867.
[4]张军华,王月英,赵勇,等.C3相干体在断层和裂缝识别中的应用[J].地震学报,2004,26(5):560-564.
[5]Marfurt K J,Chopra S.Seismic attribute mapping of structure and stratigraphy[C].Distinguished Instructor Short Course Series,Tulsa,2006:77-104.
[6]Marfurt K J.Curvature attribute applications to3D surface seismic data[J].The Leading Edge,2007,26(4):404-414.
[7]张军华,王伟,谭明友,等.曲率属性及其在构造解释中的应用[J].油气地球物理,2009,7(2):1-7.
[8]韩翀,纪学武,尹晓贺,等.曲率体属性在碳酸盐岩生物礁储层解释中的应用[J].石油天然气学报(江汉石油学院学报),2010,32(4):243-246.
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