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Abstract
Seismic exploration employing wide-azimuth, broadband, high-density data (i.e. double-width single-height; “double-width” means wide-azimuth and broadband; “single-height” means high-density data, generally referring to small-bin-size data (less than 10 × 10 m); and double-width single-height is an abbreviation) enables more complete wave field information to be recorded, reduces aliasing, and produces abundant low-frequency information, which is conducive to broadband processing and the anisotropic study of seismic data. Based on the acquired double-width single-height seismic data, in this paper, we analyse the wave field characteristics, signal-to-noise ratio and frequency of seismic data. We also design a procedure for processing double-width single-height seismic data. The key techniques in the proposed procedure focus on the high-resolution amplitude-preserved characteristics of double-width single-height seismic data obtained with a low-frequency vibroseis sweep. Faults and sand bodies are characterised and described by using the final imaging results, which embody the advantages of double-width single-height seismic exploration.
Acknowledgements
The financial support of the National Natural Science Foundation of China Youth Fund Project “Wide-azimuth OVT Processing Method and Research Application in Oil and Gas Exploration” (41804138) and the China Geological Survey Project “Strategic Survey of Shale Oil in the Northern Songliao Basin” (DD20190114) is appreciated. The technical support provided by the Bureau of Geophysical Prospecting is also gratefully acknowledged.
Disclosure statement
No potential conflict of interest was reported by the author(s ).