摘要
针对腾格里沙漠地区潜水位较深,钻机成孔容易塌孔,炸药震源成本高等问题,研究了可控震源的扫描长度、驱动幅度、震动次数、扫描频宽等对单炮记录的影响。结果表明,选择2台可控震源,震动次数为8次,扫描频率为10~100 Hz,以升频扫描,扫描长度为12 s,驱动幅度为70%,所得单炮记录效果最好;与井炮剖面数据进行对比,用可控震源获得的资料达到了相同的效果。
In order to solve the problems including deep diving level,easy hole collapse of drilling rig and high explosive source cost in the desert area of Tengger,the effects of scanning length,driving amplitude,vibration times and scanning bandwidth of viseis on single gun records are studied.The results show that two vibroseis can be selected.The best single-shot recording can be obtained under vibration frequency of 8 times,scanning frequency of 10—100 Hz,scanning length of 12 s and driving amplitude of 70%on the lift scaning.The results obtained by using vibroseis is consistent with the borehole profile data.
作者
刘波
杨斌
何风
杨帆
LIU Bo;YANG Bin;HE Feng;YANG Fan(Non-Ferrous Metals Geological Exploration Institute in Ningxia Hui Autonomous Region,Yinchuan 750000,China;Geophysical and Geochemical Exploration Institute in Ningxia Hui Autonomous Region,Yinchuan 750004,China)
出处
《宁夏工程技术》
CAS
2020年第4期336-340,共5页
Ningxia Engineering Technology
关键词
沙漠地区
可控震源
最优参数
地震勘探
desert area
vibrator
optimal parameters
seismic exploration
