Lithologic Reservoirs ›› 2018, Vol. 30 ›› Issue (4): 98-104.doi: 10.12108/yxyqc.20180411

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Reservoir prediction based on seismic waveform classification in time-frequency domain

SHI Zhanzhan1,2, WANG Yuanjun2, TANG Xiangrong2, PANG Su1, CHI Yuelong1,2   

  1. 1. The Engineering and Technical College, Chengdu University of Technology, Leshan 614000, Sichuan, China;
    2. College of Geophysics, Chengdu University of Technology, Chengdu 610059, China
  • Received:2018-01-20 Revised:2018-03-15 Online:2018-07-21 Published:2018-07-21

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Abstract: There are two problems in the reservoir prediction:(1)The traditional time-frequency analysis method is influenced by Heisenberg uncertainty principle or cross-terms,so it is often difficult to meet the requirements of high resolution.(2)The traditional time-frequency analysis method increases the redundancy of signal and increases the interpretation workload. Aiming at these two problems,a reservoir prediction method based on timefrequency domain seismic waveform classification was proposed. This method performs time-frequency decomposition of seismic signal by synchroextracting transform,and it corresponds to decomposing the complex signals into a series of simple waveforms(different frequencies and time shifts)superimposed. The decomposition results were classified by generative topographic mapping,and the waveform classification results were further calibrated by logging and drilling data. The practical applications indicate that the seismic signal waveform changes can be effectively detected by the reservoir prediction method combined with the synchroextracting transform and the generative topographic mapping.

Key words: meandering river, interlayer, middle-late stage of development, remaining oil, tapping the potential, Qinhuangdao oilfield

CLC Number: 

  • TE132.1+4
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