孔间地震剖面法的模拟研究

AN ANALOG SEARCHING INVESTIGATION ON WELL-TO-WELL SEISMIC PROFILE

煤炭工业部第一地球物理勘探队

本文通过二维层状模型,研究了孔间地震剖面法的两种观测系统(即定点反射观测系统和同步反射观测系统)时间场的变化规律及数据处理方法。通过实测资料分析认为:孔间地震剖面法信息采集简单、信噪比较高、时间场分布直观,在解决地层的分层及界面形态方面具有很大潜力。其中对时间场的识别方法,可为野外孔间地震剖面的推广和使用奠定理论基础。

By using the 2-D layered moyered models, the authors have made a research for two kinds of layouts of the well-to-well seismic section, i.e., the fixed-point-reflected layout and the synchro-reflected layout. The laws of the changing of time-field as well as the ways of data processing were also examined. The merits of the method is obviously as clear as day: the data acquisition is rather simple, the signal-to-noise ratio is in a rather large value and the time field is audio-visual. Hence the method recommended in this paper is very helpful in the understanding of the stratification of the stratum and the configuration of the interface. Besides, the means of the recognition of time fifld lays a fundation theoretically for the popularization and the utilization of this method as well.