蒙古国塔南凹陷南屯组水下扇的沉积演化特征
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摘要
利用基于Wheeler变换的数据驱动倾角导向体生成的非线性年代地层切片,研究蒙古国塔南凹陷下白垩统南屯组水下扇的沉积演化特征。基于沉积学的理论指导,通过单井相、连井相标定,结合地震反演、地震属性等技术,进行等时地层单元的沉积相分析;基于相控应用年代地层切片技术研究沉积演化特征。结果表明:塔南凹陷南屯组SQ21时期发育近岸水下扇及远岸水下扇,水下扇的沉积演化规模随着水体的加深先扩张后萎缩,到最大湖泛时期基本消失;切片中水道显示远岸水下扇是近岸水下扇二次搬运至同生断裂再次滑塌而成。
The authors apply the nonlinear chronostratic slice which is based on dip-steering of data driven from wheeler transform to research the characteristics of sedimentary evolvement of subaqueous fan in Nantun Formation of lower Cretaceous in Ta'nan Depression from Mongolia.Basing on the guidance of sedimentology,and combining the technique of seismic inversion and seismic attributes,we analyse the sedimentary facies of isochronal strata units through analysis of single-well core facies and profile of sedimentary facies to research sedimentary evolvement,which is based on chronostratic slice under control of facies.The practical application shows that nearshore subaqueous fan and farshore subaqueous fan developed in the period of SQ21,and sedimentary evolvement shows that the scale of fan expanded primaryly and then reduced along with the water becoming deepen,finally almost disappeared around the period of largest lacustrine transgression.The channel in slice shows farshore subaqueous fans formed that the sediment of nearshore subaqueous fan secondaryly transported and slumped.
The authors apply the nonlinear chronostratic slice which is based on dip-steering of data driven from wheeler transform to research the characteristics of sedimentary evolvement of subaqueous fan in Nantun Formation of lower Cretaceous in Ta'nan Depression from Mongolia.Basing on the guidance of sedimentology,and combining the technique of seismic inversion and seismic attributes,we analyse the sedimentary facies of isochronal strata units through analysis of single-well core facies and profile of sedimentary facies to research sedimentary evolvement,which is based on chronostratic slice under control of facies.The practical application shows that nearshore subaqueous fan and farshore subaqueous fan developed in the period of SQ21,and sedimentary evolvement shows that the scale of fan expanded primaryly and then reduced along with the water becoming deepen,finally almost disappeared around the period of largest lacustrine transgression.The channel in slice shows farshore subaqueous fans formed that the sediment of nearshore subaqueous fan secondaryly transported and slumped.
引文
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[17]贾建亮,刘招君,陈永成,等.测井-地震多属性密度曲线重构反演技术及应用[J].吉林大学学报:地球科学版,2010,40(3):699-706.Jia Jian-liang,Liu Zhao-jun,Chen Yong-cheng,et al.The Method of Log-Seismic Multi-Attributes DensityCurves Reconstruct Inversion and Its Application[J].Journal of Jilin University:Earth Science Edition,2010,40(3):699-706.
[18]de Bruin G,Hemstra N,Pouwel A.Stratigraphic Sur-faces in the Depositional and Chronostratigraphic(Wheeler-Transformed)Domain[J].The LeadingEdge,2007,26(7):883-886.
[2]Posamentier H W,Kolla V.Seismic Geomorphology andStratigraphy of Depositional Elements in Deep-Water Set-tings[J].Journal of Sedimentary Research,2003,73(3):367-388.
[3]Zeng H L,Bachus M M,Barrow K T,et al.Stratal Sli-cing:Part I:Realistic 3D Seismic Model[J].Geophy-sics,1998,63(2):502-513.
[4]Zeng H L,Henry S C,Riola J P,et al.Stratal Slicing:Part II:Real 3D Seismic data[J].Geophysics,1998,63(2):514-522.
[5]Gao D L.3D VCM Seismic Textures:A New Technologyto Quantify Seismic Interpretation[J].SEG ExpandedAbstracts,1999,18(1):1037-1039.
[6]Gao D L.Volume Texture Extraction for 3D Seismic Vi-sualization and Interpretation[J].Geophysics,2003,68(4):1294-1302.
[7]Gao D L.Application of Three-Dimensional Seismic Tex-ture Analysis with Special Reference to Deep-MarineFacies Discrimination and Interpretation:Offshore Ango-la,West Africa[J].AAPG Bulletin,2007,91(12):1665-1683.
[8]Sarkar S,Marfurt K J,Slatt R M.Generation of Sea-Level Curves from Depositional Pattern as Seen ThroughSeismic Attributes-Seismic Geomorphology Analysis of AnMTC-rich Shallow Sediment Column,Northern Gulf ofMexico[J].The Leading Edge,2010,29(9):1084-1091.
[9]Contreras A J,Latimer R B.Acoustic Impedance as ASequence Stratigraphic Tool in Structurally ComplexDeepwater Settings[J].The Leading Edge,2010,29(9):1072-1082.
[10]Zeng H L.Stratal Slicing:Benefits and Challeges[J].The Leading Edge,2010,29(9):1041-1047.
[11]de Groot P,Huck A,de Bruin G,et al.The HorizonCube:A Step Change in Seismic Interpretation[J].The Leading Edge,2010,29(9):1048-1055.
[12]Stark T J.Relative Geologic Time(Age)Volumes-Re-lating Every Seismic Sample to A Geologically Reasona-ble Horizon[J].The Leading Edge,2004,23(9):928-932.
[13]de Groot P,de Bruin G,Hemstra N.How to Create andUse 3D Wheeler Transformed Seismic Volumes[J].SEG Expanded Abstracts,2006,25:1038-1042.
[14]Hoyes J,Cheret T.A Review of“Global”InterpretationMethods for Automated 3D Horizon Picking[J].TheLeading Edge,2011,30(1):38-47.
[15]苗长盛,刘招君,方石,等.塔南凹陷南屯组近岸水下扇沉积特征及有利含油相带分析[J].中国石油大学学报:自然科学版,2011,35(1):34-39.Miao Chang-sheng,Liu Zhao-jun,Fang Shi,et al.Sedimentary Characteristics and Favorable Oil-bearingFacies Belts Analysis of Near-Shore Subaqueous Fan ofNantun Formation in Tanan Depression[J].Journal ofChina University of Petroleum:Edition of Natural Sci-ence,2011,35(1):34-39.
[16]贾建亮,刘招君,陈永成,等.测井-地震多属性分层重构特征曲线技术[J].石油地球物理勘探,2010,45(3):436-442.Jia Jian-liang,Liu Zhao-jun,Chen Yong-cheng,et al.Log-Seismic Multi-Attributes Stratified ReconstructCharacteristic Curves Technique[J].Oil GeophysicalProspecting,2010,45(3):436-442.
[17]贾建亮,刘招君,陈永成,等.测井-地震多属性密度曲线重构反演技术及应用[J].吉林大学学报:地球科学版,2010,40(3):699-706.Jia Jian-liang,Liu Zhao-jun,Chen Yong-cheng,et al.The Method of Log-Seismic Multi-Attributes DensityCurves Reconstruct Inversion and Its Application[J].Journal of Jilin University:Earth Science Edition,2010,40(3):699-706.
[18]de Bruin G,Hemstra N,Pouwel A.Stratigraphic Sur-faces in the Depositional and Chronostratigraphic(Wheeler-Transformed)Domain[J].The LeadingEdge,2007,26(7):883-886.
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