新疆石油地质 ›› 2005, Vol. 26 ›› Issue (6): 653-655.

• 油气勘探 • 上一篇    下一篇

用平均能量法分频识别和压制面波

王在民, 李莉, 朱鹏飞, 张仲祜, 郭宏宪, 蒋立   

  1. 中国石油 新疆油田分公司 勘探开发研究院 地球物理研究所,乌鲁木齐 830011
  • 收稿日期:2005-03-30 出版日期:2005-12-01 发布日期:2020-11-23
  • 作者简介:王在民(1943-),男,江苏阜宁人,高级工程师,地震解释,(Tel)0991-4299737.

Recognizing and Suppressing Ground Roll Wave with Average Energy Method

WANG Zai-min, LI Li, ZHU Peng-fei, ZHANG Zhong-hu, GUO Hong-xian, JIANG Li   

  1. Institute of Geophysics, Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina,Urumqi, Xinjiang 830011, China
  • Received:2005-03-30 Online:2005-12-01 Published:2020-11-23

摘要: 面波具有能量强、频率低、吸收衰减缓慢等特点。在小波分频后的含面波频带内,同一时刻较强面波能量总要比该时刻全排列的平均能量大得多,这是分频识别强面波的判别准则。定义面波窗口区域和压制门槛,可以保证低频信号不受损害。采用窄档等频距小波变换方法,在含面波的低频频带内,用平均能量法识别和压制面波,取得良好效果。

关键词: 平均, 能, 频率, 识别, 干扰波

Abstract: Ground roll wave has characteristics of strong energy, low frequency and slow attenuation.In the low band of wavelet transform,energy of ground roll wave is normally greater than the average energy in overall band of seismic reflection event, which is regarded as the discrimination criterion for it.Through definition range of the window and the suppressing threshold, the damage of seismic reflection signals with low frequency can be avoided.By using narrow band and equal distance wavelet transform and average energy method, the ground roll wave can be recognized and suppressed better, hence obtaining good results.

Key words: average, energy, frequency, recognition, disturbing wave

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