Lithologic Reservoirs ›› 2012, Vol. 24 ›› Issue (1): 84-91.doi: 10.3969/j.issn.1673-8926.2012.01.016

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Numerical simulation of high accuracy seismic pure wave source

CHEN Keyang   

  1. Research Institute of Exploration and Development， PetroChina Daqing Oilfield Company Ltd.， Daqing 163712， China
  • Online:2012-02-20 Published:2012-02-20

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Abstract:

In order to improve the numerical simulation precision of the compression wave source and shear wave source by computer, this paper put forward the grid setting method of high-order high accuracy pure compression wave and shear wave source, compared with many source grid setting proposals, and further validated it by the theory. The wave field separation numerical experiments on the isotropic elastic medium complex models were carried out, and the result shows that the setting method of traditional pure wave source has problems of low order and residual wave field. While the proposed method is with little disturbing wave field and perfect numerical simulation accuracy, which can not only achieve the goal of reappearing the seismic prospecting with the compression wave source and shear wave source, but also observe the special wave fields which are unclear with traditional numerical method. Therefore the proposed method is in favor of verifying and perfecting the seismic wave dynamic theory, and can guide the seismic acquisition, seismic processing and seismic interpretation.

Key words: low resistivity reservoir, clayminerals, additional conductivity, bound water saturation, Chang 61 reservoir, Wuqi area

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