摘要
在复杂地表区,激发出高能量、宽频带的地震波是改进复杂地表地区地震资料质量的关键。在地震采集中,通过分析近地表地震波的传播特点,优选激发参数,来提高地震波的激发质量。本文利用双井微测井资料对准噶尔盆地山前带沙漠戈壁区的近地表地震波传播特点进行分析,总结出不同激发深度对地震波频率、信噪比的影响特点,提出科学确定激发井深的理论依据。在中部4区块和中部1区块生产中推广应用,取得了较好的勘探效果。
In complex areas, the seismic wave characterized by high energy and wide frequency band produced by sources is a key step in improving seismic data quality. During seismic acquisition, it should analyze near-surface seismic propagation characters, optimize shooting parameters and increase shooting quality of seismic wave. Using double-hole uphole survey data to analyze the near-surface seismic propagation characters in desert Gobi of piedmont, Zhungar Basin, the paper summed up the characters of influence of different shooting depths on the frequency and S/N ratio of seismic wave and presented theoretical bases scientifically determined shooting depth. The studied results have been popularized in production of 4 and 1 blocks of central parts, which showed a better exploration effects.
出处
《物探装备》
2005年第2期85-89,102,共6页
Equipment for Geophysical Prospecting
