确定最佳地震采集参数的试验方法

An experimental way to determine optimal seismic acquisition parameters

江苏石油勘探局, 邵伯225261

Jiangsu Bureau for Petroleum Prospecting, Shaobo 225261

本文提出一种较为科学的确定最佳地震采集参数──井深与药量的试验方法。这种方法能有效地排除各种偶然因素的影响,避免人们主观认识上的差错。该方法的理论基础是地震数据处理的叠加统计效应。采用多炮统计叠加方法,计算多道绝对振幅平均值AA,多道平均最大振幅主频宽度乘积AS和多道平均振幅谱和AE,并结合试验叠加处理剖面,选取最佳井深与药量采集参数。

Here in this paper an experimental way which is more reasonable scicntifically is presonted todetermine optimal seismic acquisition parameters:well depth and charge. In this way the influcnceof random factors can be effectively removed and subjective mistakes can be avoided. Its theoreticalbasis is the superimposed statistical effect. Optimal well depth and optimal charge is determinedthrough statistical stacking of shots: calculating absolute amplitude average AA, calculating theproduct AS of the maximum amplitudes average and primary frequency width of scismic traces,calculating the sum AE of amplitudc average spectrum of seismic traces, and together with thesuperimposed section.