精细井—震标定研究沉积层序旋回的方法
摘要
为了解决沉积层序旋回的精细划分及在纵横向二维空间上的变化规律和横向延拓对比问题,本文提出利用小波深频分析方法,数值模拟出不同米氏周期旋回的单信号及复合信号,对模拟的多期复合信号再分解为单个频率旋回的单信号,并研发了井—震标定插入技术,实现了把单井频谱旋回特征标定到地震剖面中,进而搞清了频谱旋回在纵向、横向二维空间上的变化规律及展布特征,为确定区域沉积层序旋回的变化、地下地层结构及接触关系指明了方向。
To distinguishing sedimentary sequence cycles,and recognize two-dimensional space change law and lateral extension,this article develops a method for sedimentary sequence cycle research by well-seismic calibration.Using wavelet depth-frequency analysis,single signals and composite signals of different milankovitch cycles are obtained by numerical modeling.Then,the composite signals by numerical modeling can be broken down into single signals of singe frequency cycle.A developed well-seismic calibration insertion technology calibrates spectrum characteristics of singe frequency cycle from well data to seismic sections.The vertical-horizontal two-dimensional space changes and distribution characteristics of spectrum cycles are figured out,which help to recognize regional sedimentary sequence cycle variations,underground strata structure,and contact relationships.
To distinguishing sedimentary sequence cycles,and recognize two-dimensional space change law and lateral extension,this article develops a method for sedimentary sequence cycle research by well-seismic calibration.Using wavelet depth-frequency analysis,single signals and composite signals of different milankovitch cycles are obtained by numerical modeling.Then,the composite signals by numerical modeling can be broken down into single signals of singe frequency cycle.A developed well-seismic calibration insertion technology calibrates spectrum characteristics of singe frequency cycle from well data to seismic sections.The vertical-horizontal two-dimensional space changes and distribution characteristics of spectrum cycles are figured out,which help to recognize regional sedimentary sequence cycle variations,underground strata structure,and contact relationships.
引文
[1]Mitchum R M,Van Wagoner J C.High frequencysequences and their stacking patterns:sequence stra-tigraphic evidence of high frequency eustatic cycles.Sedimentary Geology,1991,70(2～4):131～160
[2]王贵文,邓清平,唐为清.测井曲线谱分析方法及其在沉积储层旋回研究中的应用.石油勘探与开发,2002,29(1):93～95Wang Guiwen,Deng Qingping,Tang Weiqing.Theapplication of spectral analysis of logs in depositionalcycle studies.Petroleum Exploration and Develop-ment,2002,29(1):93～95
[3]Rudman A J.Lankston R W.Stratigraphic correla-tion of well logs by computer techniques.AAPG Bul-letin,1973,57(3):577～588
[4]Goldhammer R K,Lehmann P J,Dunn P A.Theorigin of high frequency platform carbonate cycles andthird-order sequences(Lower Ordovician EL PASOGP,West Texas):constraints from outcrop date andstratigraphic modeling.Journal of SedimentationalPetrology,1993,63(3):318～359
[5]John H D.Geologic log analysis using computermethods.AAPG,1994,2(1):150～169
[6]Goldhammer R K,Dunn P A,Hardie L A.Deposi-tion cycles,composite sea-level changes,cycle stac-king parterns,and the hierarchy of stratigraphic forc-ing:examples from alpine triassic platform carbon-ates.Geological Society of America,1990,102(5):535～562
[7]徐敬领,王贵文,刘洛夫.利用小波深频分析方法研究沉积储层旋回.中国石油大学学报(自然科学版),2009,33(5):1～5Xu Jingling,Wang Guiwen,Liu Luofu.Study ofsedimentary reservoir cycles using wavelet depth-fre-quency analysis method.Journal of China Universi-ty of Petroleum(Edition of Natural Science),2009,33(5):1～5
[8]杨勇强,邱隆伟,陈世阅等.基于小波能量谱系图及小波曲线的层序地层划分.石油地球物理勘探,2011,46(5):783～789Yang Yongqiang,Qiu Longwei,Chen Shiyue et al.Sequence stratigrapgy identification based on waveletenergy spectrum and wavelet curve.OGP,2011,46(5):783～789
[9]Van Wanger J C,Mitchum R M,Campion K M etal.Siliciclastic sequence stratigrapy in well logs,cores and outcrops:concepts for high-resolution cor-relation of time and facies.AAPG,Methods in Ex-ploration Series,1990,7:1～55
[10]Berger A.Milankovith theory and climate.RevGeophys,1988,26(4):624～657
[11]Kemp F.An algorithm for the stratigraphic correla-tion of well logs.Mathematical Geology,1982,14(3):271～285
[12]Shanley K W,Maccable P J.Perspectives on the se-quence stratigraphy of continental strata.AAPG Bul-letin,1994,78(4):544～568
[13]Galloway W E.Genetic stratigraphic sequence in ba-sin analysis-architecture and genetics of flooding sur-face bounded depositional units.AAPG Bulletin,1989,73(2):125～142
[14]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分和研究意义.沉积学报,2001,19(2):249～255Zheng Rongcai,Peng Jun,Wu Chaorong.Grade di-vision of base-level cycles of terrigenous basin and itsimplications.Acta Sedimentologica Sinica,2001,19(2):249～255
[2]王贵文,邓清平,唐为清.测井曲线谱分析方法及其在沉积储层旋回研究中的应用.石油勘探与开发,2002,29(1):93～95Wang Guiwen,Deng Qingping,Tang Weiqing.Theapplication of spectral analysis of logs in depositionalcycle studies.Petroleum Exploration and Develop-ment,2002,29(1):93～95
[3]Rudman A J.Lankston R W.Stratigraphic correla-tion of well logs by computer techniques.AAPG Bul-letin,1973,57(3):577～588
[4]Goldhammer R K,Lehmann P J,Dunn P A.Theorigin of high frequency platform carbonate cycles andthird-order sequences(Lower Ordovician EL PASOGP,West Texas):constraints from outcrop date andstratigraphic modeling.Journal of SedimentationalPetrology,1993,63(3):318～359
[5]John H D.Geologic log analysis using computermethods.AAPG,1994,2(1):150～169
[6]Goldhammer R K,Dunn P A,Hardie L A.Deposi-tion cycles,composite sea-level changes,cycle stac-king parterns,and the hierarchy of stratigraphic forc-ing:examples from alpine triassic platform carbon-ates.Geological Society of America,1990,102(5):535～562
[7]徐敬领,王贵文,刘洛夫.利用小波深频分析方法研究沉积储层旋回.中国石油大学学报(自然科学版),2009,33(5):1～5Xu Jingling,Wang Guiwen,Liu Luofu.Study ofsedimentary reservoir cycles using wavelet depth-fre-quency analysis method.Journal of China Universi-ty of Petroleum(Edition of Natural Science),2009,33(5):1～5
[8]杨勇强,邱隆伟,陈世阅等.基于小波能量谱系图及小波曲线的层序地层划分.石油地球物理勘探,2011,46(5):783～789Yang Yongqiang,Qiu Longwei,Chen Shiyue et al.Sequence stratigrapgy identification based on waveletenergy spectrum and wavelet curve.OGP,2011,46(5):783～789
[9]Van Wanger J C,Mitchum R M,Campion K M etal.Siliciclastic sequence stratigrapy in well logs,cores and outcrops:concepts for high-resolution cor-relation of time and facies.AAPG,Methods in Ex-ploration Series,1990,7:1～55
[10]Berger A.Milankovith theory and climate.RevGeophys,1988,26(4):624～657
[11]Kemp F.An algorithm for the stratigraphic correla-tion of well logs.Mathematical Geology,1982,14(3):271～285
[12]Shanley K W,Maccable P J.Perspectives on the se-quence stratigraphy of continental strata.AAPG Bul-letin,1994,78(4):544～568
[13]Galloway W E.Genetic stratigraphic sequence in ba-sin analysis-architecture and genetics of flooding sur-face bounded depositional units.AAPG Bulletin,1989,73(2):125～142
[14]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分和研究意义.沉积学报,2001,19(2):249～255Zheng Rongcai,Peng Jun,Wu Chaorong.Grade di-vision of base-level cycles of terrigenous basin and itsimplications.Acta Sedimentologica Sinica,2001,19(2):249～255
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