Volume 40 Issue 2
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ZHANG Xianxu, QIANG Juan, YANG Guanmin, NIE Ailan, SUN Yongliang. The influence of automatic gain on amplitude during seismic data processing[J]. COAL GEOLOGY & EXPLORATION, 2012, 40(2): 82-85. DOI: 10.3969/j.issn.1001-1986.2012.02.020
Citation: ZHANG Xianxu, QIANG Juan, YANG Guanmin, NIE Ailan, SUN Yongliang. The influence of automatic gain on amplitude during seismic data processing[J]. COAL GEOLOGY & EXPLORATION, 2012, 40(2): 82-85. DOI: 10.3969/j.issn.1001-1986.2012.02.020
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The influence of automatic gain on amplitude during seismic data processing

  • 1. Xi'an Research Institute, China Coal Technology and Engineering Group Corp, Xi'an 710077, China;

  • 2. Research Institute of Changqing Petroleum Group, Xi'an 710069, China

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  • Received Date: June 06, 2011
  • Available Online: October 26, 2021
    Graphical Abstract
    • Abstract
  • Automatic gain control (AGC) is a modulus commonly used in seismic data processing. The paper, through building model and two processing flowcharts, analyzed shot gather, CDP gather and the influence of the use of the modulus after data stacking on amplitude, then discussed the influence of the modulus on amplitude interpretation technology such as AVO attribute analysis, identification of lithology and fluid. In the study, it was considered that AGC would bring sever falsification of the amplitude at lithologic anormaly, inducing misinterpretation. In the processing flowchart with amplitude interpretation as objective, it is forbidden to utilize AGC before and after stacking.
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