Marine multi-azimuth geometry evaluation and optimization for target-oriented illumination and imaging
Lü Xiaochun1, Sun Changxin1, Cheng Jingwang2, Li Peng3, Zou Mingjun1, Lin Zejin2
1. College of Resources and Environment, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450045, China;
2. College of Geophysics and Oil Resource, Yangtze University, Wuhan, Hubei 430010, China;
3. Chang Jiang Geophysical Exploration & Testing Co. Ltd, Wuhan, Hubei 430010, China
Abstract：In South China Sea, rugged and steep seabed and complex subsurface such as fault, syncline and anticline cause obscure seismic imaging. In this paper we propose a multi-azimuth geometry evaluation and optimization approach to deal with this issue. Aiming at targets, we use forward modeling, illumination, and migration imaging to evaluate and optimize acquisition geometry. In consideration of acquisition cost, operation efficiency, and data imaging, we put forward an optimized geometry with 4 azimuths, which are 0°, 90°, 120°, and 150°. The proposed approach provides an effective way for marine seismic geometry evaluation and optimization.
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