China Petroleum Exploration ›› 2017, Vol. 22 ›› Issue (6): 96-100.DOI: 10.3969/j.issn.1672-7703.2017.06.011

• PETROLEUM ENGINEERING • Previous Articles     Next Articles

Mechanism analysis and quantitative evaluation on suppression of multiple wave in deep Junggar Basin

Zhang Lulu, Wang Zhengjun, Xia Jianjun, Su Weimin, Zhang Xiuli, Guo Zaiping   

  1. Xinjiang Geophysical Prospecting Department of BGP, China
  • Received:2016-10-12 Revised:2017-07-25 Online:2017-11-15 Published:2017-11-11

Abstract: In reflection seismic exploration, multiple waves are common and noises and seriously affect effective signals. Multiple waves can reduce the S/N ratio of seismic data and reduce the fidelity and reliability of seismic imaging. In deep Junggar Basin, the Jurassic coal layer overlying on the Carboniferous System is an interface with strong acoustic impedance, and the multiple waves reflected by the coal layer seriously affect the imaging effect inside the Carboniferous System; therefore, suppression of the multiple waves is very important for image processing in deep Junggar Basin. This paper identifies multiple waves based on theoretical model and field data, suppresses multiple waves by filtering method, and evaluates the suppression effect with quantitative indicators. This can provide guidance for selecting multiple wave suppression methods and improve the imaging effect of the Carboniferous System.

Key words: Junggar Basin, analysis of multiple wave mechanism, suppression of multiple wave, quantitative evaluation

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