Abstract Variable-depth streamer seismic data are characterized by low and high frequencies and can be used to obtain high-quality and resolution images of complex subsurface structures. Taking advantage of the frequency range in the variable-depth streamer data, we propose the simultaneous inversion of prestack data from variable-offset stack gathers to obtain the P-wave impedance, S-wave impedance, and density. Next, we validate the method by using model and actual variable-depth streamer data from the Huizhou block. The results suggest that the broadband data recorded by variable-depth streamers improve the signal-to-noise ratio and quality of the inversion results and outperform the constant-depth streamer data in delineating the underground stratigraphy.
*This research is sponsored by Comprehensive Research of CNOOC (China) Limited (No. YXKY–2013–SZ–02).
Corresponding Authors: Deng Yong (Email: dengyong8@cnooc.com.cn)
E-mail: dengyong8@cnooc.com.cn
About author: Zhang Zhen-Bo received his B.E. in Exploration Geophysics from Southwest Petroleum University in 1995, and his M.S. in Petroleum and Natural Gas Engineering from Yangtze University in 2010. He is now working in the CNOOC (China) Limited Shenzhen Branch on seismic data acquisition, processing, and interpretation for offshore oil exploration.
2019, Vol. 16 
