准噶尔盆地乌-夏地区二叠系夏子街组层序格架
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摘要
准噶尔盆地乌-夏地区巨厚的夏子街组为隐蔽性圈闭,其地震反射特征在地震资料上表现不明显,层序界面识别起来较困难。应用经典的层序地层学原理和方法,综合运用乌-夏地区地震、钻井和测井资料,借助地震时频分析技术和测井小波旋回理论来确定层序界面的位置,在各层序井-震联合标定的基础上,分析研究了夏子街组不同层序的展布特征和体系域构成,从而建立了夏子街组层序地层格架。研究表明:地震时频分析和测井连续小波变换技术用来进行层序旋回划分较为可靠,应用此技术确定出准噶尔盆地乌-夏地区二叠系夏子街组共发育有4个具有等时意义的层序界面,并将其划分为3个三级层序;应用地震时频分析手段来分析地层中的信息,会大大提高沉积旋回研究的定量化水平;小波变化具有尺度可大可小的优点,这对于提取单井的沉积旋回、识别同一套沉积体具有重要作用,它的放大显微功能有助于识别不同级别的层序体。
Thick Xiazijie formation is characterized by concealed trap in Wu-xia area of Junggar Basin.The seismic reflection characteristic of seismic data shows indistinctly,and identification of sequence boundary is difficult.By using the principle and the method of classic sequence stratigraphy and the data of seismic,drilling and well logging,sequence boundary was confirmed in virtue of seismic time-frequency analysis and logging continuous wavelet cycle theory.On the basis of log and seismic combined calibration,spreading feature and system tract composition of different sequences were analyzed,and the sequence framework in Xiazijie formation of Permian in Wu-xia area of Junggar Basin was established.The results show that seismic time-frequency analysis and logging continuous wavelet transformation are relatively credible to division of sequence cycle.Xiazijie formation in Permian develops four isochronous sequence boundaries and is divided into three third class sequences by the technology.Analyzing the information in stratum by the instrument of seismic time-frequency analysis can improve the quantificational level of sedimentary cycle.Wavelet transformation has the virtue of transformable scale,which has the important function of distilling well's sedimentary cycle and identifing the same sediment,and its function of magnifying and dwindling lends itself to identify different class sequence body.
Thick Xiazijie formation is characterized by concealed trap in Wu-xia area of Junggar Basin.The seismic reflection characteristic of seismic data shows indistinctly,and identification of sequence boundary is difficult.By using the principle and the method of classic sequence stratigraphy and the data of seismic,drilling and well logging,sequence boundary was confirmed in virtue of seismic time-frequency analysis and logging continuous wavelet cycle theory.On the basis of log and seismic combined calibration,spreading feature and system tract composition of different sequences were analyzed,and the sequence framework in Xiazijie formation of Permian in Wu-xia area of Junggar Basin was established.The results show that seismic time-frequency analysis and logging continuous wavelet transformation are relatively credible to division of sequence cycle.Xiazijie formation in Permian develops four isochronous sequence boundaries and is divided into three third class sequences by the technology.Analyzing the information in stratum by the instrument of seismic time-frequency analysis can improve the quantificational level of sedimentary cycle.Wavelet transformation has the virtue of transformable scale,which has the important function of distilling well's sedimentary cycle and identifing the same sediment,and its function of magnifying and dwindling lends itself to identify different class sequence body.
引文
[1]王宜林,王英民,齐雪峰,等.准噶尔盆地侏罗系层序地层划分[J].新疆石油地质,2001,22(5):382-385.WANG Y i-lin,WANG Y ing-m in,QI Xue-feng,et al.C lassification of stratigraph ic sequences of Jurassic inJunggar Basin[J].X in jiang Petroleum Geology,2001,22(5):382-385.
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[8]顾家裕,国彬程,张兴阳.中国陆相盆地层序地层格架及模式[J].石油勘探与开发,2005,32(5):14.GU Jia-yu,GUO B in-cheng,ZHANG X ing-yang,et al.Sequence stratigraph ic fram ework and model of the conti-nental basins in Ch ina[J].Petroleum Exp loration and De-velopm ent,2005,32(5):14.
[9]王永刚,宋若微.层序地震学在地层内部结构分析中的应用[J].石油物探,1997,36(增刊):36-39.WANG Yong-gang,SONG Ruo-we i.App lication of se-quence se ismology in analysis of stratigraph ic inner con-struction[J].Geophysical Ospecting for Perole,1997,36(sup):36-39.
[10]夏竹,刘超颖,魏文博,等.地震道时间域频率属性特征和地层层序划分[J].石油地球物理,2005,40(5):550-560.X IA Zhu,LIU Chao-ying,WEI W en-bo,et al.Fre-quency attributes characters of se ism ic traces in tim e do-m ain and d ivision of stratigraph ic sequence[J].O ilGeo-physical Prospecting,2005,40(5):550-560.
[11]余继峰,李增学.测井数据小波变换及其地质意义[J].中国矿业大学学报,2003,32(3):336-339.YU Ji-feng,LI Zeng-xue.W avelet transform of loggingdata and its geological sign ificance[J].Journal of Ch inaUn iversity ofM in ing&Technology,2003,32(3):336-339.
[12]ANDREAS P F,REDER IK P A.Detection of sed im en-tary cyc lic ity and stratigr-aph ic comp leteness by waveletanalysis:an app lication to late A lb ian cyc lostratigraphyof the western Canada Sed im entary Basin[J].Journal ofSed im entary Research,1999,69(4):862-875.
[13]李江涛,余继峰,李增学.基于测井数据小波变换的层序划分[J].煤田地质与勘探,2004,32(2):48-50.LI Jiang-tao,YU Ji-feng,LI Zeng-xue.The dem arcatingof stratigraph ic sequence based on wavelet transform ofwell-logging data[J].Coal Geology&Exp loration,2004,32(2):48-50.
[2]王龙樟.准噶尔盆地中、新生代陆相层序地层学探讨及应用[J].新疆石油地质,1995,16(4):324-330.WANG Long-zhang.A study on M esozoic continental se-quence stratigraphy and its app lication in Junggar Basin[J].X in jiang Petroleum Geology,1995,16(4):324-330.
[3]张满郎,张琴,朱筱敏,等.准噶尔盆地侏罗系层序地层划分探讨[J].石油实验地质,2000,22(3):236-249.ZHANG M an-lang,ZHANG Q in,ZHU X iao-m in,et al.On d ivision of Jurassic sequence stratigraphy in the Jung-gar Basin[J].Experim ental Petroleum Geology,2000,22(3):236-249.
[4]胡宗全,李明娟.准噶尔盆地西北缘侏罗系层序模拟与沉积相演化特征[J].石油与天然气地质,2003,24(4):351-355.HU Zong-quan,LI M ing-juan.Sequence modeling andsed im entary fac ies evolution of Jurassic in northwesternedge of Junggar Basin[J].O il&Gas Geology,2003,24(4):351-355.
[5]耿春雁,陈布科.准噶尔盆地西北缘二叠系乌尔禾组隐蔽圈闭[J].成都理工学院学报,2002,29(2):168-172.GENG Chun-yan,CHEN Bu-ke.Subtle traps in the north-westm argin of Junggar Basin[J].Journal of Chengdu U-n iversity of Technology,2002,29(2):168-172.
[6]赵玉光.准噶尔盆地西北缘二叠纪沉积岩相模式[J].新疆石油地质,1999,20(5):397-401.ZHAO Yu-guang.Sed im entary lithofac iesmodel of Perm i-an volcan ic-sed im entary basin in northwestern m argin ofJunggar Basin[J].X in jiang Petroleum Geology,1999,20(5):397-401.
[7]VAIL P R.The stratigraph ic signatures of tecton ics,eu-stasy and sed im entology-an overview[C]//Cyc les and e-vents in stratigraphy.NewYork:Springer-Verlag,1991:611-659.
[8]顾家裕,国彬程,张兴阳.中国陆相盆地层序地层格架及模式[J].石油勘探与开发,2005,32(5):14.GU Jia-yu,GUO B in-cheng,ZHANG X ing-yang,et al.Sequence stratigraph ic fram ework and model of the conti-nental basins in Ch ina[J].Petroleum Exp loration and De-velopm ent,2005,32(5):14.
[9]王永刚,宋若微.层序地震学在地层内部结构分析中的应用[J].石油物探,1997,36(增刊):36-39.WANG Yong-gang,SONG Ruo-we i.App lication of se-quence se ismology in analysis of stratigraph ic inner con-struction[J].Geophysical Ospecting for Perole,1997,36(sup):36-39.
[10]夏竹,刘超颖,魏文博,等.地震道时间域频率属性特征和地层层序划分[J].石油地球物理,2005,40(5):550-560.X IA Zhu,LIU Chao-ying,WEI W en-bo,et al.Fre-quency attributes characters of se ism ic traces in tim e do-m ain and d ivision of stratigraph ic sequence[J].O ilGeo-physical Prospecting,2005,40(5):550-560.
[11]余继峰,李增学.测井数据小波变换及其地质意义[J].中国矿业大学学报,2003,32(3):336-339.YU Ji-feng,LI Zeng-xue.W avelet transform of loggingdata and its geological sign ificance[J].Journal of Ch inaUn iversity ofM in ing&Technology,2003,32(3):336-339.
[12]ANDREAS P F,REDER IK P A.Detection of sed im en-tary cyc lic ity and stratigr-aph ic comp leteness by waveletanalysis:an app lication to late A lb ian cyc lostratigraphyof the western Canada Sed im entary Basin[J].Journal ofSed im entary Research,1999,69(4):862-875.
[13]李江涛,余继峰,李增学.基于测井数据小波变换的层序划分[J].煤田地质与勘探,2004,32(2):48-50.LI Jiang-tao,YU Ji-feng,LI Zeng-xue.The dem arcatingof stratigraph ic sequence based on wavelet transform ofwell-logging data[J].Coal Geology&Exp loration,2004,32(2):48-50.
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