基于三维模型的薄互层振幅属性实验研究
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摘要
为考证振幅属性与砂体累计厚度之间的关系及振幅切片在时间上的变化与砂体沉积演化的关系,文中设计了三个薄互层地质模型,利用褶积模型形成三维数据体,据此进行地震属性分析实验。实验结果表明:①对于子波干涉之后形成一个复合波的薄互层地层而言,振幅切片能够定性地反映砂体累计厚度的变化情况,且反射振幅与累计厚度成正相关关系,不同深度振幅切片之间的变化可以定性地反映沉积砂体的演化过程;②对于薄层干涉之后形成多个复合波的薄互层地层而言,振幅切片能够定性地反映砂体在横向上的分布范围,但反射振幅与砂体厚度不一定具有正相关关系,不同深度振幅切片之间的变化依然能够在一定程度上反映沉积砂体的演化过程,但两者之间的相关性较第一种情况明显变弱;③反射振幅和沉积砂体之间的相关性并不具备时间上的等时性。
In order to verify the relationship between the amplitude attribute and the cumulative thickness of a sand body,as well as the relationship between the variation of amplitude slice with depth and the sedimentary evolution of a sand body,three thin interbeded models were established in this paper and the experiment of seismic attribute analysis was carried out based on the models and the 3D synthetic data volume simulated by using the convolution method.The experiment results indicate that:(1) as for the thin interbed with single complex wave formed after wavelet interference,the amplitude slice can qualitatively reflect the changing of cumulative thickness of sand body and it shows a positive correlation between the reflection amplitude and the cumulative thickness,and the change of the amplitude slice in different depth can qualitatively reflect evolution process of the sedimentary sand body,(2) for the thin interbed with several complex waves formed after interference,the amplitude slice can qualitatively reflect the lateral distribution range of sand body.However,it does not always show the positive correlation between the reflection amplitude and sand body thickness,and the change of the amplitude slices in different depths can still reflect evolution process of the sedimentary sand body in a certain extent,but the correlation becomes weaker compared with the first situation,and(3) the correlation between reflection amplitude and the sedimentary sand body is not the time isochronic.
In order to verify the relationship between the amplitude attribute and the cumulative thickness of a sand body,as well as the relationship between the variation of amplitude slice with depth and the sedimentary evolution of a sand body,three thin interbeded models were established in this paper and the experiment of seismic attribute analysis was carried out based on the models and the 3D synthetic data volume simulated by using the convolution method.The experiment results indicate that:(1) as for the thin interbed with single complex wave formed after wavelet interference,the amplitude slice can qualitatively reflect the changing of cumulative thickness of sand body and it shows a positive correlation between the reflection amplitude and the cumulative thickness,and the change of the amplitude slice in different depth can qualitatively reflect evolution process of the sedimentary sand body,(2) for the thin interbed with several complex waves formed after interference,the amplitude slice can qualitatively reflect the lateral distribution range of sand body.However,it does not always show the positive correlation between the reflection amplitude and sand body thickness,and the change of the amplitude slices in different depths can still reflect evolution process of the sedimentary sand body in a certain extent,but the correlation becomes weaker compared with the first situation,and(3) the correlation between reflection amplitude and the sedimentary sand body is not the time isochronic.
引文
[1]Kallweit R S and Wood L C.The limit of resolutionof zero-phase wavelets.Geophysics,1982,47(7):1035~1046
[2]Widess M B.Quantifying resolving power of seismicsystem.Geophysics,1982,47(8):1160~1173
[3]俞寿朋.高分辨率地震勘探.北京:石油工业出版社,1993,158~162
[4]Rosa A L R,Ulrycht T J.Processing via spectralmodeling.Geophysics,1991,56(8):1244~1251
[5]Porsani M J,Ursin B.Mixed-phase deconvolution andwavelet estimation.The Leading Edge,2000,19(1):76~79
[6]李国发,牟永光,王濮.交互地震子波提取技术.石油大学学报,2005,29(5):33~36Li Guo-fa,Mou Yong-guang,Wang Pu.A interac-tive technique for seismic wavelet extraction.Journalof University of Petroleum,2005,29(5):33~36
[7]Puryear C I,Castagna J P.Layer-thickness determi-nation and stratigraphic interpretation using spectralinversion:Theory and application.Geophysics,2008,73(2):R37~R38
[8]Velis D R.Stochastic sparse-spike deconvolution.Ge-ophysics,2008,73(1):R1~R9
[9]凌云研究组.基本地震属性在沉积环境解释中的应用.石油地球物理勘探,2003,38(6):642~653Ling Yun.Study on application of basic seismic attrib-utes to interpretation of depositional environment.OGP,2003,38(6):642~653
[10]凌云研究组.应用振幅调谐探测小于1/4波长地质目标.石油地球物理勘探,2003,38(3):268~274Ling Yun Study Group.Application of amplitude tun-ing in surveying geologic target thickness less than 1/4 wavelength.OGP,2003,38(3):268~274
[11]凌云研究组.储层演化地震分析.石油地球物理勘探,2004,39(6):672~678Ling Yun Research Group.Seismic analysis of reser-voir evolution.OGP,2004,39(6):672~678
[12]凌云研究组.地震分辨率极限问题研究.石油地球物理勘探,2004,39(4):435~442Ling Yun Research Group.Study of seismic resolu-tion limit.OGP,2004,39(4):435~442
[13]Li G F,Xiong J L,Zhou H et al.Seismic reflectioncharacteristics of fluvial sand and shale interbeddedlayers.Applied Geophysics,2008,5(3):219~229
[14]Partyka G A,Gridley J M and Lopea J.Interpreta-tional application of spectral decomposition in reser-voir characterization.The Leading Edge,1999,18(3):353~360
[15]魏志平.谱分解调谐技术在薄储层定量预测中的应用.石油地球物理勘探,2009,44(3):337~340Wei Zhi-ping.Application of spectrum decompositiontuning body technique to quantitatively predict thinreservoir.OGP,2009,44(3):337~340
[2]Widess M B.Quantifying resolving power of seismicsystem.Geophysics,1982,47(8):1160~1173
[3]俞寿朋.高分辨率地震勘探.北京:石油工业出版社,1993,158~162
[4]Rosa A L R,Ulrycht T J.Processing via spectralmodeling.Geophysics,1991,56(8):1244~1251
[5]Porsani M J,Ursin B.Mixed-phase deconvolution andwavelet estimation.The Leading Edge,2000,19(1):76~79
[6]李国发,牟永光,王濮.交互地震子波提取技术.石油大学学报,2005,29(5):33~36Li Guo-fa,Mou Yong-guang,Wang Pu.A interac-tive technique for seismic wavelet extraction.Journalof University of Petroleum,2005,29(5):33~36
[7]Puryear C I,Castagna J P.Layer-thickness determi-nation and stratigraphic interpretation using spectralinversion:Theory and application.Geophysics,2008,73(2):R37~R38
[8]Velis D R.Stochastic sparse-spike deconvolution.Ge-ophysics,2008,73(1):R1~R9
[9]凌云研究组.基本地震属性在沉积环境解释中的应用.石油地球物理勘探,2003,38(6):642~653Ling Yun.Study on application of basic seismic attrib-utes to interpretation of depositional environment.OGP,2003,38(6):642~653
[10]凌云研究组.应用振幅调谐探测小于1/4波长地质目标.石油地球物理勘探,2003,38(3):268~274Ling Yun Study Group.Application of amplitude tun-ing in surveying geologic target thickness less than 1/4 wavelength.OGP,2003,38(3):268~274
[11]凌云研究组.储层演化地震分析.石油地球物理勘探,2004,39(6):672~678Ling Yun Research Group.Seismic analysis of reser-voir evolution.OGP,2004,39(6):672~678
[12]凌云研究组.地震分辨率极限问题研究.石油地球物理勘探,2004,39(4):435~442Ling Yun Research Group.Study of seismic resolu-tion limit.OGP,2004,39(4):435~442
[13]Li G F,Xiong J L,Zhou H et al.Seismic reflectioncharacteristics of fluvial sand and shale interbeddedlayers.Applied Geophysics,2008,5(3):219~229
[14]Partyka G A,Gridley J M and Lopea J.Interpreta-tional application of spectral decomposition in reser-voir characterization.The Leading Edge,1999,18(3):353~360
[15]魏志平.谱分解调谐技术在薄储层定量预测中的应用.石油地球物理勘探,2009,44(3):337~340Wei Zhi-ping.Application of spectrum decompositiontuning body technique to quantitatively predict thinreservoir.OGP,2009,44(3):337~340
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