论文部分内容阅读
地震干涉测量(SI)是近几年勘探地球物理领域研究的一个热点方向.首先,在高陡断层模型的基础上,利用稳相分析解释垂直地震剖面(VSP,Vertical Seismic Profile)地震干涉测量的物理含义,分析虚假同向轴产生的原因,更重要的是找到地震干涉测量实现波场转化的主要贡献项;其次,利用地震干涉测量实现VSP向单井剖面(SWP,Single Well Profile)波场转化,观测系统转换到井中,离目标地质体更近,实现高陡构造成像;最后,将该成像结果与传统地面地震勘探在高陡构造成像质量方面进行对比,得出该方法可以有效提高高陡构造成像精度的结论,为复杂高陡构造成像提供了新的思路.
Earthquake interferometry (SI) is a hotspot in the field of exploration geophysics in recent years.Firstly, based on the high-steep fault model, stable seismic analysis (VSP) is used to explain seismic interference measurements of vertical seismic profile (VSP) Physical meaning, and analysis of the causes of false co -axial axes, and more importantly, to find the main contribution of the seismic interference measurement to the wave field conversion. Secondly, the seismic waveforms of VSP to single well profile (SWP) Conversion and observation system into the well, closer to the target geology body to realize the steep structure imaging. Finally, comparing the imaging results with the imaging quality of the steep structure of the conventional terrestrial seismic exploration, it is concluded that this method can effectively increase the height The conclusion of steep structure imaging accuracy provides a new idea for complex high-steep structure imaging.