合成地震记录层位标定方法改进

Improving horizons-labeling method on seismic synthetic records.

地震层位标定是地震资料构造解释和地震储层研究的基础。层位标定精度受多种因素的影响。为了消除合成地震记录的时深关系影响,建议采用时间扫描法代替手工移动法。时间扫描法又分整体时间扫描法及局部扫描法。为了消除所用子波相位特性的影响,建议在利用时间法确定准确的时深关系基础上,利用相位扫描法选择最佳的匹配子波制作合成记录,即可实现最佳的地震层位标定。

Seismic horizons labeling is basis of structural interpretation of seismic data and study of seismic reservoir. There are many factors that affect the precise of horizons labeling. In order to eliminate the influence of time-distance relationship on seismic synthetic records,we suggest using time-scanning method to replace manual-shifting method. The time-scanning method can also be divided into integral-time-scanning method and local-time-scanning method. In order to eliminate the influence of the characters of used wavelet phases, we suggest using phase-scanning method to select optimum matched wavelet to make synthetic records on the basis of using time-scanning method to accurately determine the time-distance relationship,which can realize optimum seismic-horizons labeling.