自适应噪音衰减技术在去除滩浅海地震资料伪单频干扰中的应用
|
摘要
滩浅海具有特殊的地表条件和复杂多变的表层结构,采集的地震资料存在多种特殊干扰波(如伪单频、鬼波等),因此其地震资料处理流程与常规资料处理存在一定的差异。论述了伪单频干扰的形成机理、特征及自适应噪音衰减技术的基本原理和流程,并应用该方法对某滩浅海地区的二维OBC(海底电缆)地震资料进行处理。应用效果表明,自适应噪音衰减(ANC)技术可以有效去除伪单频干扰,同时不会对有效波造成损害,从而提高地震资料的品质。
With special surface conditions and complex and variable surface structure, the seismic data collected in paralic zones have a variety of special interference waves(such as pseudo single frequency, ghost wave, etc.), and therefore, there exists certain differences in seismic data processing process compared with conventional data processing. In this paper, the formation mechanism, characteristics of pseudo single frequency interference, the basic principle and flow of adaptive noise canceller technique are discussed. The technique is applied to the processing of 2 D OBC(submarine cable) seismic data in paralic zones. The application results show that adaptive noise canceller(ANC) technique can effectively eliminate pseudo single frequency interference without damaging the effective waves, thus improving the quality of seismic data.
With special surface conditions and complex and variable surface structure, the seismic data collected in paralic zones have a variety of special interference waves(such as pseudo single frequency, ghost wave, etc.), and therefore, there exists certain differences in seismic data processing process compared with conventional data processing. In this paper, the formation mechanism, characteristics of pseudo single frequency interference, the basic principle and flow of adaptive noise canceller technique are discussed. The technique is applied to the processing of 2 D OBC(submarine cable) seismic data in paralic zones. The application results show that adaptive noise canceller(ANC) technique can effectively eliminate pseudo single frequency interference without damaging the effective waves, thus improving the quality of seismic data.
引文
[1]刘治红,凡正才,朱伟强.滩浅海地区浅层高精度地震资料处理技术[J].天然气工业,2007,22(增):139–141.
[2]朱健,王瑞雪.滩浅海地震勘探几种常见问题探讨[J].复杂油气藏,2012,5(2):32–35.
[3]崔汝国,曹国滨.垦东滩浅海地区地震勘探技术[J].石油地球物理勘探,2008,43(增):21–24.
[4]高少武,贺振华,赵波,等.自适应单频干扰识别与消除方法研究[J].石油物探,2008,47(4):352–356.
[5]朱伟强.胜利滩浅海地区高精度地震资料处理方法研究[D].山东青岛:中国科学院研究生院(海洋研究所),2008.
[6]罗国安,高少武,魏庚雨,等.Chirp–Z变换谱分析压制地震记录单频干扰[J].石油地球物理勘探,2009,44(2):166–172.
[7]刘恋,张学强,胡治权,等.相关原理在压制地震单频干扰中的应用研究[J].工程地球物理学报,2011,8(4):477–482.
[8]王权海,苗放.提高地震数据信噪比的PCA方法[J].地球物理学进展,2011,26(3):1 039–1 044.
[9]高少武.单频干扰识别与消除方法研究[D].四川成都:成都理工大学,2010.
[10]郑祝堂.泌阳凹陷王集新庄三维地震资料处理方法研究[D].北京:中国地质大学(北京),2008.
[11]高少武,贺振华,赵波,等.时间域单频干扰波消除方法的改进[J].石油地球物理勘探,2008,43(3):270–274.
[12]高少武,赵波,祝树云,等.余弦函数自适应法识别与消除单频干扰[J].石油地球物理勘探,2011,46(1):64–69.
[13]陈可洋,杨微,陈树民,等.高精度单频干扰并行压制技术及其应用[J].大庆石油地质与开发,2017,36(5):143–148.
[2]朱健,王瑞雪.滩浅海地震勘探几种常见问题探讨[J].复杂油气藏,2012,5(2):32–35.
[3]崔汝国,曹国滨.垦东滩浅海地区地震勘探技术[J].石油地球物理勘探,2008,43(增):21–24.
[4]高少武,贺振华,赵波,等.自适应单频干扰识别与消除方法研究[J].石油物探,2008,47(4):352–356.
[5]朱伟强.胜利滩浅海地区高精度地震资料处理方法研究[D].山东青岛:中国科学院研究生院(海洋研究所),2008.
[6]罗国安,高少武,魏庚雨,等.Chirp–Z变换谱分析压制地震记录单频干扰[J].石油地球物理勘探,2009,44(2):166–172.
[7]刘恋,张学强,胡治权,等.相关原理在压制地震单频干扰中的应用研究[J].工程地球物理学报,2011,8(4):477–482.
[8]王权海,苗放.提高地震数据信噪比的PCA方法[J].地球物理学进展,2011,26(3):1 039–1 044.
[9]高少武.单频干扰识别与消除方法研究[D].四川成都:成都理工大学,2010.
[10]郑祝堂.泌阳凹陷王集新庄三维地震资料处理方法研究[D].北京:中国地质大学(北京),2008.
[11]高少武,贺振华,赵波,等.时间域单频干扰波消除方法的改进[J].石油地球物理勘探,2008,43(3):270–274.
[12]高少武,赵波,祝树云,等.余弦函数自适应法识别与消除单频干扰[J].石油地球物理勘探,2011,46(1):64–69.
[13]陈可洋,杨微,陈树民,等.高精度单频干扰并行压制技术及其应用[J].大庆石油地质与开发,2017,36(5):143–148.