Xinjiang Petroleum Geology ›› 2008, Vol. 29 ›› Issue (1): 29-32.

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A Study on Seismic Vertical Resolution by Forward Model

ZHANG Ya-min1, ZHANG Shu-fa2   

  1. 1. School of Earth Sciences and Resources Management, Chang'an University, Xi'an, Shaanxi 710054, China;
    2. Research Institute of Exploration and Development, Zhongyuan Oilfield Company, Sinopec, Puyang, Henan 457001, China
  • Received:2007-04-16 Published:2020-08-10

Abstract: In order to investigate the relation of vertical resolution of seismic reflection with stratum structure and frequency of incidence wavelet, and the relation between the percentage of sandstone and the amplitude and wave impedance of seismic reflection in sand layers, two geological models are developed. One is the stratum association model with different thickness of sand-mudstone; the other is the association of stratum models with different percentages of sand-mudstone. The study shows that there exist linear proportional relations between the seismic reflection amplitude and wave impedance and the sand-mudstone percentage. The vertical resolution of seismic reflection is related not only to the incidence wavelet frequency into target zone, but also to the stratum sedimentary rhythm and structure.

Key words: forward, model, resolution, reflection, amplitude, wave impedance

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