双域、双面沉积体解释方法在L区的应用
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摘要
沉积体分析可以在时间域进行,也可以变换到相对地质年代域(Wheeler域)进行,双域协同解释是今后沉积解释的发展方向。Wheeler域数据体因垂向单位为相对地质年代,等时意义比较直观,同时因其去除了区域构造背景影响,反射同相轴产状和沉积现象关系密切,有利于沉积体和沉积环境的解释。对于地质体的双面解释,首先从相对地质年代体中提取目的层的某种敏感属性,对沉积体和所在沉积体系平面沉积成像,然后在此属性平面上解释出地质体的分布范围和边界,最后将Wheeler域平面解释结果投影到时间域的反演剖面上做顶、底厚度解释。Wheeler域属性平面解释有利于把控地质体展布的方向和范围,反演剖面解释有利于把控地质体的厚度。双域、双面协同解释方式既利用了地震属性的横向分辨率优势,又利用了反演资料纵向分辨率的优势,极大地减少了地质体解释的多解性,从而提高预测精度。
Sedimentary bodies can be analyzed both in time domain and relative geologic age domain(Wheeler domain).Double domain interpretation is the future development direction of sedimentary interpretation. The wheeler domain data volume has significant isochronism because of its relative geologic age vertical unit.Meanwhile, since the impact of regional structure background is removed,seismic reflection events have close relationship with sedimentary phenomena, which benefits for the interpretation of sedimentary bodies and environment.The double-plane interpretation of sedimentary bodies starts from extracting one sensitive attribute of target interval from relative geologic age volume to image the sedimentary bodies and its sedimentary systems then the scale and boundary of the geologic body is interpreted on the plane of attribute;finally, the interpretation result on the plane of Wheeler domain is projected onto the inversion profile in time domain to predict the top and bottom of the geologic body.Seismic attribute interpretation on the plane of Wheeler domain is helpful to display the direction and range of geologic body,and the interpretation of inversion profile is beneficial for controlling the thickness of geologic body.Therefore, double-domain &.double-plane collaborative interpretation utilizes the advantages of both lateral resolution of seismic attribute and longitudinal resolution of inversion profile,which largely reduces the multiplicity of solutions and eventually improves the prediction precision
Sedimentary bodies can be analyzed both in time domain and relative geologic age domain(Wheeler domain).Double domain interpretation is the future development direction of sedimentary interpretation. The wheeler domain data volume has significant isochronism because of its relative geologic age vertical unit.Meanwhile, since the impact of regional structure background is removed,seismic reflection events have close relationship with sedimentary phenomena, which benefits for the interpretation of sedimentary bodies and environment.The double-plane interpretation of sedimentary bodies starts from extracting one sensitive attribute of target interval from relative geologic age volume to image the sedimentary bodies and its sedimentary systems then the scale and boundary of the geologic body is interpreted on the plane of attribute;finally, the interpretation result on the plane of Wheeler domain is projected onto the inversion profile in time domain to predict the top and bottom of the geologic body.Seismic attribute interpretation on the plane of Wheeler domain is helpful to display the direction and range of geologic body,and the interpretation of inversion profile is beneficial for controlling the thickness of geologic body.Therefore, double-domain &.double-plane collaborative interpretation utilizes the advantages of both lateral resolution of seismic attribute and longitudinal resolution of inversion profile,which largely reduces the multiplicity of solutions and eventually improves the prediction precision
引文
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[14]Gao D L.Application of three-dimensional seismic texture analysis with special reference to deep-marine facies discrimiation and interpretation:offshore Angola,west Africa[J].AAPG Bulletin,2007,91 (12):1665-1683
[2]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): 405-410
[3]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):69-73
[4]刘保国,刘力辉.实用地震沉积学在沉积相分析中的应用[J].石油物探,2008,47(3):266-271
[5]朱筱敏,刘长利,张义娜,等.地震沉积学在陆相湖盆三角洲砂体预测中的应用[J].沉积学报,2009,27 (5):915-921
[6]于兴河,李胜利.碎屑岩系油气储层沉积学的发展历程与热点问题思考[J].沉积学报,2009,27(5): 880-895
[7]Zeng H L,John A,Katherine G.Geomorphologybased automated seismic facies analysis[J].Expanded Abstracts of 72~(nd) Annual Internat SEG Mtg, 2002,1-4
[8]Zeng H L,Henry S C,Riola J P.Stratal slicing,partⅡ:real 3-D seismic data[J].Geopgysics,1998,63 (2):514-522
[9]Zeng H L,Ambrose W A,Villalta E.Seismic sedimentology and regional depositional systems in Mioceno Norte,Lake Maracaibo,Venezuela[J].The Leading Edge,2001,20(11):1260-1269
[10]Zeng H L,Kerans C.Seismic frequency control on carbonate seismic stratigraphy:A case study of the Kingdom Abo sequence,west Texas[J].AAPG Bulletin, 2003,87(2):273-293
[11]Zeng H L.Seismic geomorphology-based facies classification [J].The Leading Edge,2004,23(7 ): 644-645
[12]Gao D L.Volume texture extraction for 3D seismic visualization and interpretation[J].Geophysics, 2003,68(4):1294-1302
[13]Gao D L.Application of seismic texturemodel regression to seismic facies characterization and interpretation [J].The Leading Edge,2008,27(5 ):394-397
[14]Gao D L.Application of three-dimensional seismic texture analysis with special reference to deep-marine facies discrimiation and interpretation:offshore Angola,west Africa[J].AAPG Bulletin,2007,91 (12):1665-1683
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