地震数据源的选择对于溶洞有效识别的效果分析
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摘要
在碳酸盐岩岩溶储层预测中,溶洞的"串珠状"地震反射特征是一项很重要的识别标志。对溶洞的"串珠状"地震反射成因和如何突出溶洞"串珠状"的显示特征进行了探讨。通过对塔中地区奥陶系碳酸盐岩岩溶储层三维保幅地震数据体和三维常规地震数据体分别进行显示处理和类比分析,最终认为保幅地震数据更有利于溶洞"串珠状"地震反射特征的显示与识别。
The beads-shaped seismic reflection characteristic of karst cave is avery important identification mark in the prediction of carbonate karst reservoirs.In this paper,the origin of bead-shaped seismic reflection was discussed,and then,how to highlight the beads-shaped seismic indicating characteristic of karst cave was referred.It is proved that seismic dataof preserved amplitudes are more beneficial to the display and identification of bead-shaped seismic refection characteristic of Ordovician carbonate karst caves,with acomparison between the 3-D preserved amplitudes seismic dataand 3-D conventional seismic datain identification of karst caves in Tazhong area.
The beads-shaped seismic reflection characteristic of karst cave is avery important identification mark in the prediction of carbonate karst reservoirs.In this paper,the origin of bead-shaped seismic reflection was discussed,and then,how to highlight the beads-shaped seismic indicating characteristic of karst cave was referred.It is proved that seismic dataof preserved amplitudes are more beneficial to the display and identification of bead-shaped seismic refection characteristic of Ordovician carbonate karst caves,with acomparison between the 3-D preserved amplitudes seismic dataand 3-D conventional seismic datain identification of karst caves in Tazhong area.
引文
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[2]姚姚.菲涅尔带与洞缝隙型油气藏地震波场[J].石油物探,2005,44(5):491-494.YAO Yao.Fresnel zone and seismic wave field in the fracture-vug reservoir[J].Geophysical Prospecting for Petroleum,2005,44(5):491-494.
[3]YAO Y,SA L M,WANG S X.Research on the seismic wave field of karst cavern reservoirs near deep carbonate weatheredcrusts[J].Applied Geophysics,2005,2(2):94-102.
[4]吴永国,贺振华,黄德济.串珠状溶洞模型介质波动方程正演与偏移[J].地球物理学进展,2008,23(2):539-544.WU Yong-guo,HE Zhen-hua,HUANG De-ji.Wave equation forward modeling and migration for beads-shaped corroded cavemodel[J].Progress in Geophysics,2008,23(2):539-544.
[5]胡中平.溶洞地震波“串珠状”形成机理及识别方法[J].中国西部油气地质,2006,2(4):423-426.HU Zhong-ping.Mechanism and distinction method for the seismic“string beads”characteristic[J].West China Petroleum Geosciences,2006,2(4):423-426.
[6]郭树祥.地震资料保幅处理的讨论[J].油气地球物理,2009,7(1):1-3.GUO Shu-xiang.Discussion on preserved amplitude processing of seismic data[J].Petroleum Geophysics,2009,7(1):1-3.
[7]李振春,张军华.地震数据处理方法(第一版)[M].东营:中国石油大学出版社,2006:1-15.
[8]王西文,刘全新,吕焕通,等.相对保幅的震资料连片处理方法研究[J].石油物探,2006,45(2):105-121.WANG Xi-wen,LIU Quan-xin,LV Huan-tong,et al.Relative amplitude method to merging processing of 3-D seismic data from multi-area[J].Geophysical Prospecting for Petroleum,2006,45(2):105-121.
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