子波整形提高合成地震记录质量
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摘要
阐述合成地震记录的制作原理,利用测井数据计算出反射系数。根据地震波传播机制,通过三维地震数据统计得到子波,由此计算出原始合成记录。再根据过井剖面建立褶积模型,对子波进行整形,得到一个随时间变化的地震子波,最终得到与地震数据的波组特征相吻合的合成地震记录。为精细储层描述打下了坚实的基础。
Synthetic seismogram is the bridge that connects seismologic data with well logging data,and is also the basis of the interpretation of structure and reservoir's seismic lithology.The accuracy of synthetic seismogram directly affects the accurate calibration of seismic geologic horizon and the accuracy of reservoir's lithology interpretation.Through this paper illustrates the principle of synthesizing seismogram.The reflection cofficients are obtained with the well logging data.By the principle of seismic waves,the wavelet is extracted from the seismic data of three dimension,and the raw synthetic seismogram is finished.Through building convolution model,this paper shapes wavelet extracted from seismic data,this wavelet varies with the time.At last,the seismic lithology of it is as the same of seismic data.Thus it lays a strong foundation for reservoir fine description.
Synthetic seismogram is the bridge that connects seismologic data with well logging data,and is also the basis of the interpretation of structure and reservoir's seismic lithology.The accuracy of synthetic seismogram directly affects the accurate calibration of seismic geologic horizon and the accuracy of reservoir's lithology interpretation.Through this paper illustrates the principle of synthesizing seismogram.The reflection cofficients are obtained with the well logging data.By the principle of seismic waves,the wavelet is extracted from the seismic data of three dimension,and the raw synthetic seismogram is finished.Through building convolution model,this paper shapes wavelet extracted from seismic data,this wavelet varies with the time.At last,the seismic lithology of it is as the same of seismic data.Thus it lays a strong foundation for reservoir fine description.
引文
[1]李宗杰.合成地震记录的人机交互制作方法及应用[J].石油地球物理勘探,1999,34(增刊):96-102.
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[3]孙振涛,孟宪军,慎国强,等.高精度合成地震记录制作技术研究[J].石油地球物理勘探,2002,37(6):640-643.
[4]雍世和,张超谟.测井数据处理与综合解释[M].东营:石油大学出版社,2004.
[5]奈德尔N S.褶积模型[M].牛毓荃译.北京:石油工业出版社,1986.
[2]陈裕明,李晶,周亚同.合成地震记录的改进方法讨论[J].石油地球物理勘探,2001,36(4):495-498,507.
[3]孙振涛,孟宪军,慎国强,等.高精度合成地震记录制作技术研究[J].石油地球物理勘探,2002,37(6):640-643.
[4]雍世和,张超谟.测井数据处理与综合解释[M].东营:石油大学出版社,2004.
[5]奈德尔N S.褶积模型[M].牛毓荃译.北京:石油工业出版社,1986.
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