地震波动方程方向行波波场分离正演数值模拟与逆时成像

doi:10.3969/j.issn.1673-8926.2014.04.019

Lithologic Reservoirs ›› 2014, Vol. 26 ›› Issue (4): 130-136.doi: 10.3969/j.issn.1673-8926.2014.04.019

Directional one-way wave field separating numerical simulation of the seismic wave equation and reverse-time migration

CHEN Keyang¹， CHEN Shumin¹， LI Lailin¹， WU Qingling¹， FAN Xingcai¹， LIU Zhenkuan²

1. Research Institute of Exploration and Development， PetroChina Daqing Oilfield Company Ltd.， Daqing 163712， Heilongjiang， China； 2. Exploration Company, PetroChina Daqing Oilfield Company Ltd., Daqing 163453, Heilongjiang, China

Online:2014-08-15 Published:2014-08-15

Abstract

Abstract:

In order to further improve the knowledge of seismic wave propagation law, this paper applied Poynting vector to 2D directional one-way wave field separation numerical simulation of seismic wave equation for the first time. According to the Poynting vector wave field numerical characteristics, the seismic up-way wave, down-way wave, left-way wave and right-way wave fields are automatically recognized and separated during the seismic wave numerical simulation. Taking isotropic model, tilt layer model and Marmousi model as examples, we carried out the corresponding numerical simulation experiments. The computational results show that the presented method is correct and effective. It can get the directional one-way wave field in the snapshots of each iteration step, and finally get the numerical records with directional one-way wave field separation. The presented method is simple and easy to accomplish with small computational cost. Therefore, it has important application value in the different one-way wave identification and separation processing and in imaging stage of the practical seismic data.

Key words: genetic types of pores, controlling factors, the fourth member of Quantou Formation, GD area, southern Songliao Basin

CHEN Keyang， CHEN Shumin， L I Lailin， WU Qingling， FAN Xingcai， LIU Zhenkuan. Directional one-way wave field separating numerical simulation of the seismic wave equation and reverse-time migration[J].Lithologic Reservoirs, 2014, 26(4): 130-136.

References

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