地震沉积学在油田勘探开发中的应用——以滨里海盆地东部地区为例
摘要
滨里海盆地东部盐下下二叠统层序SⅢ主要发育辫状河三角洲和滨浅海沉积,该区钻井分布少、砂体厚度薄、典型地震相标志少,常规的沉积相研究方法受到一定的限制,沉积砂体分布范围不明确.利用90°相位转换和地层切片技术,对层序SⅢ的高位体系域进行了地震沉积学研究,通过对地层切片的解释,精细刻画出辫状河三角洲前缘砂体在不同时期的平面分布范围,预测了沉积相在时空上的演化规律,为油气勘探开发提供地质依据.
Braided delta and epeiric sea depositions are developed in the sequence SIII of Permian Formation under salt in the east of Pre-Caspian Basin.The geologic research of the area by using conventional sedimentary facies method is restricted because of less wells,thin sand bodies and less typical seismic facies symbol.Therefore,the sedimentary sandbody distribution in this area cannot be determined.For this reason,the highstand system tract of sequence SIII is studied by using 90° phase shift and stratal slicing technology.The plane distributions of the braided delta front sandbodies in different periods are presented by the interpretation of stratal slices,and the temporal and spatial evolution laws of sedimentary facies are obtained,which provides a reliable geologic criterion for the exploration and development of gas and oil in this area.
Braided delta and epeiric sea depositions are developed in the sequence SIII of Permian Formation under salt in the east of Pre-Caspian Basin.The geologic research of the area by using conventional sedimentary facies method is restricted because of less wells,thin sand bodies and less typical seismic facies symbol.Therefore,the sedimentary sandbody distribution in this area cannot be determined.For this reason,the highstand system tract of sequence SIII is studied by using 90° phase shift and stratal slicing technology.The plane distributions of the braided delta front sandbodies in different periods are presented by the interpretation of stratal slices,and the temporal and spatial evolution laws of sedimentary facies are obtained,which provides a reliable geologic criterion for the exploration and development of gas and oil in this area.
引文
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[2]Zeng H L,Henry S C,Riola J P.Stratal slicing,partⅡ:Real 3D seismic data[J].Geophysica,1998,63(2):514-522.
[3]Zeng H L,Ambrose W A.Seimic sedimentology and re-gional depositional systems in Miocene Norte,lake Mara-caibo,Venezuela[J].The leading Edge,2001,20(11):1260-1269.
[4]Eberli G P,Masaferro J L,Rick Sarg J F.Seismic imagingof carbonate reservoirs and system[C].AAPG Memoir81.Tulsa:AAPG,2004:1-9.
[5]董春梅,张宪国,林承焰.地震沉积学的概念、方法和技术[J].沉积学报,2006,24(5):699-704.DONG Chun-mei,ZHANG Xian-guo,LIN Cheng-yan.Conception,method and technology of the seismic sedim-entology[J].Acta Sedimentologica Sinica,2006,24(5):699-704.
[6]林承焰,张宪国.地震沉积学探讨[J].地球科学进展,2006,21(11):1140-1144.LIN Cheng-yan,ZHANG Xian-guo.The discussion of theseismic sedimentology[J].Advances in Earth Science,2006,21(11):1140-1144.
[7]董春梅,张宪国,林承焰.有关地震沉积学若干问题的探讨[J].石油地球物理勘探,2006,41(4):405-409.DONG Chun-mei,ZHANG Xian-guo,LIN Cheng-yan.Dis-cussion on several issues about seismic sedimentology[J].Oil Geophysical Prospecting,2006,41(4):405-409.
[8]林承焰,张宪国,董春梅.地震沉积学及其初步应用[J].石油学报,2007,28(2):69-71.LIN Cheng-yan,ZHANG Xian-guo,DONG Chun-mei.Concept of seismic sedimentology and its preliminary ap-plication[J].Aeta Petrolei Sinica,2007,28(2):69-71.
[9]张义娜,朱筱敏,刘长利.地震沉积学在中亚南部地区的应用[J].石油勘探与开发,2009,36(1):74-79ZHANG Yi-na,ZHU Xiao-min,LIU Chang-li.Seismicsedimentology and its application in south of Central Asia[J].Petrol Exploration And Development,2009,36(1):74-79.
[10]Zeng H L,Henta T F.High-frequency sequence stratigra-phy from seismic sedimentology:Applied to Miocene,Ver-milion Block 50,T,iger Shoal area,Offshore Louisiana[J].AAPG Bulletin,2004,88(2):153-174.
[11]Zeng H L.From seismic stratigraphy to seismic sedimen-tology:a senaible trasition[J].Gulf Coast Association ofGeological Societies Transactions,2001,LI:413-420.
[12]Posamentier H W.3-D yields strat geologic insights[J].AAPG Explorer,2004:26-27.
[13]Posamentier H W,Kolla V.Seismic geomorphology andstratigraphy of depositional elements in deep-water setting[J].Journal of Sedimentary Research,2003,73(3):367-388.
[14]Van Wagoner J C,Mitchum R M,Campion K M,et al,Si-liciclatic sequence stratigraphyin well logs,cores and out-crops;Concepts for high-resolution correlation of time andfacies[C].AAPG Methods in Exploration Series 7.Tulsa:AAPG,1990.
[15]邬兰,唐华佳,徐正华,等.轮古东地区石炭系东河砂岩段沉积相[J].西安石油大学学报:自然科学版,2010,25(3):23-32.WU Lan,TANG Hua-jia,XU Zheng-hua,et al.Study onthe sedimentary facies of Donghe sandstone segment ofCarboniferous system in the eastern area of Lungu[J].Journal of Xi'an Shiyou University:Natural Science Edi-tion,2010,25(3):23-32.
[16]杨华,窦伟坦,刘现阳,等.鄂尔多斯盆地三叠系延长组长7沉积相分析[J].沉积学报,2010,28(2):254-263.YANG Hua,DOU Wei-tan,LIU Xian-yang,et al.Analysison sedimentary facies of member 7 in Yanchang Formationof Triassic in Ordos Basin[J].Acta Sedimentologica Sini-ca,2010,28(2):254-263.
[17]董艳蕾,朱晓敏,李德江.渤海湾盆地辽东湾地区古近系地震相研究[J].沉积学报,2007,25(4):554-563.DONG Yan-lei,ZHU Xiao-min,LI De-jiang.Seismic faciesof Paleogene in Liaodong Bay,Bohai Basin[J].Acta Sedi-mentologica Sinica,2007,25(4):554-563.
[18]邹元荣,金晓辉,闫相宾.塔河油田三叠系层序地层与沉积相研究[J].西安石油大学学报:自然科学版,2008,23(5):11-15.ZOU Yuan-rong,JIN Xiao-hui,YAN Xiang-bing.Study onthe sequence stratigraphy and sedimentary facies of theTriassic in Tahe Oilfield[J].Journal of Xi'an Shiyou Uni-versity:Natural Science Edition,2008,23(5):11-15.
[19]Zeng H L,Backus M M.Interpretive advantages of 90°-phase wave-Lets:Part1-Modeling[J].Geopjysics,2005,70(3):C7-C15.
[20]Zeng H L,Backus M M.Interpretive advantages of 90°-phase wave-Lets:Part2-Modeling[J].Geopjysics,2005,70(3):C17-C24.
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