Abstract Seismic exploration in the mountainous areas of western Chinese is extremely difficult because of the complexity of the surface and subsurface, which results in shooting difficulties, seismic data with low signal-to-noise ratio, and strong interference. The complexity of the subsurface structure leads to strong scattering of the reflection points; thus, the curved-line acquisition method has been used. However, the actual subsurface structural characteristics have been rarely considered. We propose a design method for irregular acquisition based on common reflection points (CRP) to avoid difficult-to-shoot areas, while considering the structural characteristics and CRP positions and optimizing the surface-receiving line position. We arrange the positions of the receiving points to ensure as little dispersion of subsurface CRP as possible to improve the signal-to-noise ratio of the seismic data. We verify the applicability of the method using actual data from a site in Sichuan Basin. The proposed method apparently solves the problem of seismic data acquisition and facilitates seismic exploration in structurally complex areas.
This work was funded by The National Natural Science Foundation of China (No. 41304115), Sichuan Province innovative team of natural gas geology Construction Program (No. 13TD0024), and Fund for middle-aged core teachers of SWPU.
Cite this article:
Zhao Hu,Yin Cheng,He Guang-Ming et al. Research of CRP-based irregular 2D seismic acquisition[J]. APPLIED GEOPHYSICS, 2015, 12(1): 73-78.
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