多种地震属性参数在储层横向预测中的应用
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摘要
目前在储层横向预测中广泛使用多种地震属性参数 ,主要包括与炮检距有关的峰值频率和相位、AVO信息、纵横波速度及波阻抗信息。本文主要使用 AVO和 FVO属性参数 ,并结合钻井资料检测油水边界、储层空间展布及厚度。为了提高预测精度 ,本文特别强调做好“三高”地震资料处理 ,在叠前提取 AVO和 FVO信息 ,然后联合应用 AVO和 FVO信息进行实际预测。此法用于 A油田的检测 ,获得了成功 ,使该区多年未查明的油水边界问题得到了很好的解决。
The multiple seismic attributes are widely used for lateral reservoir prediction now,mainly include offset-related peak frequency and phase,AVO information,P-and S-wave velocities and wave impedance information.The paper mainly used AVO and FVO attributes,combining with drilling data,to detect the oil-water boundary,spatial distribution and thickness of reservoir.In order to improving the accuracy of prediction,the paper especially emphasized on well-doing “3H”seismic data processing,detection of AVO and FVO in prestack stage,then jointly-used AVO and FVO information to implement practical prediction.The method was used for detection of A oilfield and gained success,better solved the problem of undefined oil-water boundary many years ago in the area.
The multiple seismic attributes are widely used for lateral reservoir prediction now,mainly include offset-related peak frequency and phase,AVO information,P-and S-wave velocities and wave impedance information.The paper mainly used AVO and FVO attributes,combining with drilling data,to detect the oil-water boundary,spatial distribution and thickness of reservoir.In order to improving the accuracy of prediction,the paper especially emphasized on well-doing “3H”seismic data processing,detection of AVO and FVO in prestack stage,then jointly-used AVO and FVO information to implement practical prediction.The method was used for detection of A oilfield and gained success,better solved the problem of undefined oil-water boundary many years ago in the area.
引文
[1] Futterm anWalter.Dispersive body wave.GeophysicalResearch,1962,67:5279～5291
[2] OstranderW J.Plane- wave reflection coefficients forgas sands at non- normal angle of incidence.Geo-physics,1962,49:1637～1648
[3] AlmoghrabiH andL angeJ.L ayers and bright spots.Geophysics,1986,51:699～709
[4] DeVoogdN,DenRooijenH.Thin layer response andspectral bandwidth.Geophysics,1983,48:12～18
[5] RafipourB andHerrinE.Phase offset indicator(PV-O):A study of phase shift versus offset and fluid con-tent.Geophysics,1986,51:679～688
[2] OstranderW J.Plane- wave reflection coefficients forgas sands at non- normal angle of incidence.Geo-physics,1962,49:1637～1648
[3] AlmoghrabiH andL angeJ.L ayers and bright spots.Geophysics,1986,51:699～709
[4] DeVoogdN,DenRooijenH.Thin layer response andspectral bandwidth.Geophysics,1983,48:12～18
[5] RafipourB andHerrinE.Phase offset indicator(PV-O):A study of phase shift versus offset and fluid con-tent.Geophysics,1986,51:679～688
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