基于突变理论的煤层不连续性检测技术
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摘要
通过突变理论的尖点突变模型及分析,将地震信号转化为尖点突变的标准形式。在时间域、频域计算突跳势、突跳时间等突跳参数,分析突跳参数异常,较好的反映了煤层的不连续性;比较相干、突跳理论两种技术在反映煤层不连续性上的效果,分析了各种技术的优缺点。尝试将相干属性和突跳参数属性进行融合,得到新的属性切片,很好的反映了煤层断层和裂隙富集区的分布情况。研究表明,利用突变参数进行断层的检测是可行的,突变理论将为煤层不连续性检测提供一种新的方法。
The cusp model of catastrophe theory and its expression are mentioned in this paper.The seismic record is transformed into the normal form of cusp catastrophe.Catastrophic potential,catastrophic time and so on are calculated in time domain and in frequency domain.Analysis of catastrophic anomalies can better reflect the dis-continuity of coal seam.Comparing the effect of the theories of coherence and catastrophe in reflecting coal seam discontinuity,advantages and disadvantages of these two techniques were analyzed.Finally attempting to attribute catastrophe parameters with coherence and getting the new sections can reflect the distribution of zones rich in faults and fractures in coal seams.The study indicates that using catastrophe parameters to detect faults is feasible and catastrophe theory provides a new method for coal seam discontinuity detection.
The cusp model of catastrophe theory and its expression are mentioned in this paper.The seismic record is transformed into the normal form of cusp catastrophe.Catastrophic potential,catastrophic time and so on are calculated in time domain and in frequency domain.Analysis of catastrophic anomalies can better reflect the dis-continuity of coal seam.Comparing the effect of the theories of coherence and catastrophe in reflecting coal seam discontinuity,advantages and disadvantages of these two techniques were analyzed.Finally attempting to attribute catastrophe parameters with coherence and getting the new sections can reflect the distribution of zones rich in faults and fractures in coal seams.The study indicates that using catastrophe parameters to detect faults is feasible and catastrophe theory provides a new method for coal seam discontinuity detection.
引文
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[2]罗振丽.突变理论及相干技术在全三维构造解释中的应用研究[D].徐州:中国矿业大学,2004.
[3]ZHAO Muhua,YANG Wenqiang,CUI Huixia.Application ofCatastrophe Theory in 3D Seismic Data Interpretation of CoalMine[J].China Univ.of Mining&Tech,2005,15(4):339-343.
[4]柏冠军.三维地震资料微机管理及可视化解释系统研究与开发[D].西安:西北大学,2006.
[5]李正文,唐建明,熊兴德.油气储集层突变理论识别技术及其应用[J].矿物岩石,1998,18(3):87-93.
[6]李正文,李琼.油气储集层裂缝非线性预测技术及应用研究[J].石油地球物理勘探,2003,38(1):48-52.
[7]张爱印.三维地震资料微机可视化与解释系统研究[D].徐州:中国矿业大学,2004.
[8]李振春,张军华.地震数据处理方法[M].东营:中国石油大学出版社,2004.
[9]吕昱昭.D-S证据理论的修正及其应用[D].合肥:中国科学技术大学,2004.
[10]何兵,毛士艺,张有为,等.基于证据分类的DS证据合成及判决方法[J].电子与信息学报,2002:24(7):894-899.
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