基于自动增益控制调制法的高频重建技术
|
摘要
针对我国东部油田目前急需解决的河流相薄互层储层预测中地震资料分辨率不能满足实际需求的问题,提出了一种高频重建方法.该方法利用地震资料极值点得到的调制函数通过与原地震资料的运算得到重建资料的高频部分,保留原地震资料的低频部分,得到重建的高频地震资料.该方法计算时间较常见方法大大缩短,参数调节非常方便,结果保持了原有同相轴的波组特征,避免了常见提频方法中打破原有同相轴添加新的零点产生假象的错误,而且对比原始剖面增添了层间细节.该方法有效的拓宽了地震资料有效频带,并通过实际资料的处理给予证实.
To solve the problem that the seismic data resolution can't meet the request of reservoir prediction in the river face thin-layers in Chinese eastern oil fields,a high frequency data reconstruction method is proposed.The extrema of the seismic data are used to get the modulation function which operated with the original seismic data to get the high frequency part of the reconstruction data to rebuild the wide band data.This method greatly saves the computation,and easy to adjust the parameters.In the output profile,the original features of the seismic events are kept,the common fault that breaking the events and adding new zeros to produce alias is avoided.And the interbeded details are enhanced compared to the original profiles.The effective band of seismic data is expended and the method is approved by the processing of the field data.
To solve the problem that the seismic data resolution can't meet the request of reservoir prediction in the river face thin-layers in Chinese eastern oil fields,a high frequency data reconstruction method is proposed.The extrema of the seismic data are used to get the modulation function which operated with the original seismic data to get the high frequency part of the reconstruction data to rebuild the wide band data.This method greatly saves the computation,and easy to adjust the parameters.In the output profile,the original features of the seismic events are kept,the common fault that breaking the events and adding new zeros to produce alias is avoided.And the interbeded details are enhanced compared to the original profiles.The effective band of seismic data is expended and the method is approved by the processing of the field data.
引文
[1]Sacchi M D,Ulrych T J.Improving resolution of Radon oper-ators using a model re-weighted least squares procedure[J].Journal of Seismic Exploration,1995:315~328.
[2]Sacchi M D,Statistical and Transform Methods in GeophysicalSignal Processing[M].2002.
[3]Sacchi M D,Ulrych T J.High-resolution velocity gathers andoffset space reconstruction[J].Geophysics,1995,60(4),1169~1177.
[4]杨谦,李正文.地震资料宽带约束反演方法及应用[J].石油物探,1996,35(4):37~42.
[5]刘喜武,刘洪.实现稀疏反褶积的预条件共轭梯度法[J].物探化探计算技术,2003,25(3):215~219.
[6]曾锐,刘洪,等.柯西约束盲反褶积技术在井间地震的应用[J]地球物理学进展2004,19(1):166~172.
[7]刘喜武,刘洪.地震盲反褶积综述[J].地球物理学进展.2003,18(2):203~209.
[8]Spitz S.Seismic trace interpolation in the F-X domain[J].Ge-ophysics,1991,56(6),785~794.
[9]国九英,F-X域地震道内插[J],石油地球物理勘探,1996,31(1):28~34.
[10]国九英,周兴元,F-K域等间隔地震道内插[J],石油地球物理勘探,1996,31(2):211~218.
[11]刘喜武,刘洪,刘彬.反假频非均匀地震数据重建方法研究[J].地球物理学报,2004,47(2):299~305
[12]张红梅,刘洪.基于稀疏离散-τp变换的叠后地震道内插[J].石油地球物理勘探,2006,41(3):281~285.
[13]张红梅,刘洪.基于稀疏离散-τp变换的非均匀地震道重建[J]石油物探,2006,45(2):141~145
[14]张红梅,刘洪.基于稀疏离散-τp变换的叠后地震道外推[J]物探化探计算技术,2007,29(1):1~7.
[15]王维红,首皓,刘洪,等.线性同相轴波场分离的高分辨率-τp变换法[J].地球物理学进展,2006,21(1):74~78.
[16]Yi Luo,Saieh Al-Dossary,etc.Generalized Hilbert Trans-form and its application in geophysics[J].The Leading Edge,2003.22(3),198~202.
[17]陆文凯,丁文龙,等.基于信号子空间分解的三维地震资料高分辨率处理方法[J].地球物理学报,2005,48(4):896~901.
[18]陆文凯,张善文.基于频率搬移的地震资料约束测井资料外推[J].地球物理学报,2004,47(2).354~358.
[2]Sacchi M D,Statistical and Transform Methods in GeophysicalSignal Processing[M].2002.
[3]Sacchi M D,Ulrych T J.High-resolution velocity gathers andoffset space reconstruction[J].Geophysics,1995,60(4),1169~1177.
[4]杨谦,李正文.地震资料宽带约束反演方法及应用[J].石油物探,1996,35(4):37~42.
[5]刘喜武,刘洪.实现稀疏反褶积的预条件共轭梯度法[J].物探化探计算技术,2003,25(3):215~219.
[6]曾锐,刘洪,等.柯西约束盲反褶积技术在井间地震的应用[J]地球物理学进展2004,19(1):166~172.
[7]刘喜武,刘洪.地震盲反褶积综述[J].地球物理学进展.2003,18(2):203~209.
[8]Spitz S.Seismic trace interpolation in the F-X domain[J].Ge-ophysics,1991,56(6),785~794.
[9]国九英,F-X域地震道内插[J],石油地球物理勘探,1996,31(1):28~34.
[10]国九英,周兴元,F-K域等间隔地震道内插[J],石油地球物理勘探,1996,31(2):211~218.
[11]刘喜武,刘洪,刘彬.反假频非均匀地震数据重建方法研究[J].地球物理学报,2004,47(2):299~305
[12]张红梅,刘洪.基于稀疏离散-τp变换的叠后地震道内插[J].石油地球物理勘探,2006,41(3):281~285.
[13]张红梅,刘洪.基于稀疏离散-τp变换的非均匀地震道重建[J]石油物探,2006,45(2):141~145
[14]张红梅,刘洪.基于稀疏离散-τp变换的叠后地震道外推[J]物探化探计算技术,2007,29(1):1~7.
[15]王维红,首皓,刘洪,等.线性同相轴波场分离的高分辨率-τp变换法[J].地球物理学进展,2006,21(1):74~78.
[16]Yi Luo,Saieh Al-Dossary,etc.Generalized Hilbert Trans-form and its application in geophysics[J].The Leading Edge,2003.22(3),198~202.
[17]陆文凯,丁文龙,等.基于信号子空间分解的三维地震资料高分辨率处理方法[J].地球物理学报,2005,48(4):896~901.
[18]陆文凯,张善文.基于频率搬移的地震资料约束测井资料外推[J].地球物理学报,2004,47(2).354~358.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心