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Global Geology 2021, 24(2) 119-128 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Application of Gaussian beam pre-stack depth
migration in rugged seabed |
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HAN Fuxing，YI Xin，SUN Zhangqing，HU Jia，XU Baoyin and XU Hai |
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1． College for Geo-Exploration Science Technology，Jilin University，Changchun 130026，China;
2． Geophysical Exploration and Ｒesearch Institute of Jilin Oilfield，Songyuan 138006，Jilin，China;
3． Overseas Center of Sinopec Petroleum Exploration and Development Ｒesearch Institute，Beijing 100083，China |
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Abstract：
Strong fluctuation of seabed，abrupt variation in depth and dip of seabed bring seismic imaging problems，such as irregular reflection waves，obvious multiple waves，serious lateral wave development，poor imaging on base surface and depression structure，low signal-to-noise ratio of middle and deep layers． In this paper，Gaussian beam migration imaging method is used to analyze the imaging effect of rugged seabed in deep water area，and the ray tracing method of wavefront construction method is used to analyze the kinematic characteristics of seismic waves． By improving the design of seismic data acquisition and observation system，imaging quality of fine structures is improved． |
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Keywords：
Gaussian beam migration
wavefront construction method
Gaussian beam
pre-stack depth
rugged
seabed
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Received Revised Online: |
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