接收宽频地震信号的涡流检波器的选用方法
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摘要
无论高分辨率地震勘探,还是高精度、高密度地震勘探,都要求野外资料采集环节接收到宽频带的地震信号。在资料采集过程中,检波器类型和信号传输方式对地震资料的品质影响很大,它直接关系到地震勘探的成效。本文从高精度地震勘探的需求出发,通过地震信号的特征和传输方式、数字检波器的性能、地震仪器记录特点及野外试验资料的综合分析,阐述了检波器与地震仪器记录方式之间的匹配关系,给出了涡流数字检波器对中高频弱小地震信号的良好记录效果,指出了在高密度地震勘探中,采用涡流数字检波器接收宽频地震信号是一个较好的选择。
Whether high-resolution seismic exploration or high-precision,high-density seismic exploration requires broadband seismic signals in seismic acquisition.Type of detector and signal transmission style has a great effect on seismic data quality,and related to the effectiveness of high-density seismic exploration directly.Starting with the demand of high-density seismic exploration,through a comprehensive analysis of seismic signal characteristics,signal transmission style,digital detector performance,record characteristics of seismic instruments and field test,this paper elaborates the matching relationship between the detector and seismic instruments,concludes that eddy current digital has good record effect for weak seismic signals in high-frequency,and points out that using eddy current digital detector in high-density seismic exploration for receiving broadband seismic signals is an excellent choice.
Whether high-resolution seismic exploration or high-precision,high-density seismic exploration requires broadband seismic signals in seismic acquisition.Type of detector and signal transmission style has a great effect on seismic data quality,and related to the effectiveness of high-density seismic exploration directly.Starting with the demand of high-density seismic exploration,through a comprehensive analysis of seismic signal characteristics,signal transmission style,digital detector performance,record characteristics of seismic instruments and field test,this paper elaborates the matching relationship between the detector and seismic instruments,concludes that eddy current digital has good record effect for weak seismic signals in high-frequency,and points out that using eddy current digital detector in high-density seismic exploration for receiving broadband seismic signals is an excellent choice.
引文
1 邹奋勤等.数字检波器在地震勘探中的应用效果.海洋地质与第四纪地质,2008,28(3):133~137
2 曹务祥.模拟和数字检波器的质量响应特征对比分析.勘探地球物理进展,2007,30(2):96~99
3 周志才,王凤池,吴英林.陆上检波器对弱地震信号的记录能力分析.SPG/SEG深圳,2011国际地球物理会议论文集,2011:242
4 周志才,于承业,侯树麒.陆上常用模拟检波器直接数字化的记录效果.物探装备,2012,22(2):75~78
5 廖声刚.24位地震数据采集系统进行高精度石油地震勘探的局限性.江汉石油科技,2005,15(2):13~15
2 曹务祥.模拟和数字检波器的质量响应特征对比分析.勘探地球物理进展,2007,30(2):96~99
3 周志才,王凤池,吴英林.陆上检波器对弱地震信号的记录能力分析.SPG/SEG深圳,2011国际地球物理会议论文集,2011:242
4 周志才,于承业,侯树麒.陆上常用模拟检波器直接数字化的记录效果.物探装备,2012,22(2):75~78
5 廖声刚.24位地震数据采集系统进行高精度石油地震勘探的局限性.江汉石油科技,2005,15(2):13~15
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