陆上地震勘探随机干扰分析
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摘要
探索随机干扰的分析方法、变化规律及对地震勘探的影响可以为压制和消除随机干扰提供指导。通过对不同环境下录制的大量噪音记录的量化分析,归纳了随机干扰的特征,探讨了运用不同施工因素采集时随机干扰的变化。基于对随机干扰统计规律的认识,提出了数理统计分析和地球物理分析相结合的定量分析方法,明确了随机干扰产生的机理,即环境噪音的强弱主要与接收因素有关,次生噪音主要来自地震激发,系统噪音则是采集设备工作过程中产生的干扰。
Searching the analytical approach, change rule and influences on seismic exploration of random interference can provide some guidance to erase them. Characteristics of the random interference are summed up and the changes of the random interference are discussed when acquisition using various operating factors based on the quantification analysis of large quality of noise records transcripted under different circumstances. According to the statistics rule of the random interference, quantitative analytical approach combined with mathematical statistical analysis with geo-physical analysis is proposed. Mechanism of the random interference is clear:the strength of environment noise is mainly related to receiving factors, secondary noise comes from seismic excitation, and system noise is the interference which comes from acquisition equipment.
Searching the analytical approach, change rule and influences on seismic exploration of random interference can provide some guidance to erase them. Characteristics of the random interference are summed up and the changes of the random interference are discussed when acquisition using various operating factors based on the quantification analysis of large quality of noise records transcripted under different circumstances. According to the statistics rule of the random interference, quantitative analytical approach combined with mathematical statistical analysis with geo-physical analysis is proposed. Mechanism of the random interference is clear:the strength of environment noise is mainly related to receiving factors, secondary noise comes from seismic excitation, and system noise is the interference which comes from acquisition equipment.
引文
[1]陆基孟.地震勘探原理[M].东营:石油大学出版社,1996:85-161.
[2]董敏煜.地震勘探[M].东营:石油大学出版社,2000:28-47.
[3]曹国滨,张旭,魏继东,等.东营凹陷深层地震资料采集中的噪音分析与压制[J].油气地质与采收率,2003,10(2):34-35.
[4]刘财,王典,刘洋,等.二维多级中质滤波技术在随机噪声消除中的应用初探[J].石油地球物理勘探,2005,40(2):161-167.
[5]陈家鼎,刘婉如,汪仁官.概率统计讲义[M].北京:高等教育出版社,1983:71-96.
[6]吕郊.地震勘探仪器原理[M].东营:石油大学出版社,1997:95-131.
[2]董敏煜.地震勘探[M].东营:石油大学出版社,2000:28-47.
[3]曹国滨,张旭,魏继东,等.东营凹陷深层地震资料采集中的噪音分析与压制[J].油气地质与采收率,2003,10(2):34-35.
[4]刘财,王典,刘洋,等.二维多级中质滤波技术在随机噪声消除中的应用初探[J].石油地球物理勘探,2005,40(2):161-167.
[5]陈家鼎,刘婉如,汪仁官.概率统计讲义[M].北京:高等教育出版社,1983:71-96.
[6]吕郊.地震勘探仪器原理[M].东营:石油大学出版社,1997:95-131.
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