Abstract：The vibroseis is mainly used for shooting source of seismic data acquisition in desert area of Saudi Arabia.The broad-frequency and high-energy noise with linear distribution is discovered in the frequency spectrum of single shot record [1],appeared as the bright strip in spectrum and random showed in single shot record,and is rarely found on same channel of successive two single shot records.After studying the broad-frequency and high-energy noise on seismic records,the paper considered that ①the frequency of broad-frequency and high-energy noise attenuated linearly with time:initial frequency of records is generally 30~60Hz and final frequency is 10~40Hz,and the difference between the initial and final frequency is about 20Hz,same as the difference of frequency variation in reference signal during the recording length time;②the energy level of pulse is 102 and of noise is 10-3;③the time producing noise is basically from 14h to 22h,and places producing noise are up-wind slop and bottom of slop in fluctuant area of sand dune;④the broad-frequency and high-energy noise is formed by interference produced by electrostatic discharge in a twinkling.The paper also presented some measures to avoid the influence of the broad-frequency and high-energy noise on production as far as possible.
张庆淮, 李玉兴. 沙漠区宽频高能噪声对地震记录的影响[J]. 石油地球物理勘探, 2008, 43(2): 142-145.
Zhang Qing-huai and Li Yu-xing. Influence of broad-frequency and high-energy noise on seismic data in desert area. OGP, 2008, 43(2): 142-145.
