干扰波调查方法在高密度地震采集中的应用

Application of interference wave investigation methods in high-density seismic acquisition

(1.中国石油化工股份有限公司胜利油田分公司,山东东营257022;2.中国石化集团胜利石油管理局地球物理勘探开发公司,山东东营257086;3. 中国石油化工股份有限公司胜利油田分公司物探研究院,山东东营257022)

Han Wengong,Shengli Oilfield Branch Company,SINOPEC,Dongying 257022,China

介绍了3种干扰波调查方法，给出了各种方法的优点及适用范围。在LJ地区，分别利用方形排列调查法及生产排列噪声录制法进行干扰波
调查，分析了干扰波场特征，确定研究区高密度采集道距为12.5m。LJ地区高密度采集结果表明，应用干扰波调查方法以后，消除了主要干扰波
的空间假频，干扰波分离效果较好，剖面的信噪比和分辨率得到了提高。

Three kinds of interference wave investigation method were introduced.The advantages and applicability of the methods were
given.In LJ area,square array investigation method and production array noise recording method were used to investigate the
interference wave.After analyzing the characteristics of wavefield,the high-density acquisition trace interval in LJ area was
selected as 12.5m.The high-density acquisition results in LJ area demonstrated that by using interference wave investigation
methods,the spatial aliasing of main interference wave was removed and the separation of interference wave obtained good
result.Meanwhile,the resolution and signal-to-noise ratio of the seismic sections were increased.

10.3969/j.issn.1000-1441.2001.05.012