礁体及沉积特征在高分辨率相干属性剖面上的特征分析
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摘要
目前国内、外主要应用相干分析技术进行断层裂缝识别和河道砂体空间展布特征等的分析,而且也主要应用相干体的平面特征来进行平面分析。我们发现,相干体的剖面细节信息对于一些沉积特征(上超、前积等)和礁体特征(边界、内幕等)往往要比原始的振幅剖面特征清楚得多。特别是利用高分辨率相干分析结果,完全可以在相干属性剖面上进行一些沉积特征的分析,甚至层位的对比解释等。这里结合实际地震资料,探讨总结了礁体及相关沉积现象在相干属性剖面上的特征,并结合相干属性的平面特征进行了礁体及沉积特征的识别,取得了良好效果。
Coherency analysis techniques have been widely used to detect faults and fractures and to describe the distribution of channel sandstones at home and abroad,and the coherency map and volume are mainly used in the analysis.We find that the characteristics of reef and sedimentary settings are usually much more clear in coherency sections than in original amplitude sections.Especially,when we do the high resolution coherency analysis,we can do the characterization of sedimentary settings,even the horizon picking in coherency sections.This paper presents and summaries our works on reef and sedimentary settings characterization in coherency sections and detecting the reef and sedimentary settings combining with coherency volume and map.The very positive results have been achieved in our study.
Coherency analysis techniques have been widely used to detect faults and fractures and to describe the distribution of channel sandstones at home and abroad,and the coherency map and volume are mainly used in the analysis.We find that the characteristics of reef and sedimentary settings are usually much more clear in coherency sections than in original amplitude sections.Especially,when we do the high resolution coherency analysis,we can do the characterization of sedimentary settings,even the horizon picking in coherency sections.This paper presents and summaries our works on reef and sedimentary settings characterization in coherency sections and detecting the reef and sedimentary settings combining with coherency volume and map.The very positive results have been achieved in our study.
引文
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[2]王从镔,龚洪林,许多年,等.高分辨率相干体分析技术及其应用[J].地球物理学进展,2008,23(5):1575.
[3]张海燕,陈树民.本征值相干技术在松辽盆地北部精细地质研究中的应用[J].大庆石油地质与开发,2008,27(2):140.
[4]吴海波,刘钊.基于拉普拉斯算子的彩色图像锐化处理[J].电脑开发与应用,2008,21(9):27.
[5]马谨环,陈国俊,吴志高,等.改进的第三代相干算法及应用[J].勘探地球物理进展,2007,30(4):286.
[6]苑书金.地震相干体技术的研究综述[J].勘探地球物理进展,2007,30(1):7.
[7]孙夕平,杜世通.相干体技术算法研究及其在地震资料解释中的应用[J].石油大学学报,2003,27(2):32.
[8]BAHORICH M S,BRIDGES S R.The seismic se-quence attribute map(SSAM)[J].Expanded Abstracts of the62ndAnnual Internet SEG Meeting,1992:227.
[9]BAHORICHM S,FARMER S L.3-D seismic coher-ency for faults and Stratigraphic features[J].The Lead-ing Edge,1995,14(10):1053.
[10]MARFURTK J,SUDHAKAR V,GERSZTENKORN A,et al.coherency calculations in the presence of structural dip[J].Geophysics,1999,64(1):104.
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