Linear inversion-imaging method based on joint primary reflected waves and surface-related multiples

Ouyang, Min; Shen, Sheng; Liu, Shouwei; Bao, Feng

doi:10.1007/s11770-021-0967-2

Cited by 1 publication

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For developing the theory of migration imaging, some experts have proposed to consider imaging methods within the inversion theory, which develops conventional migration imaging into true amplitude imaging and least squares migration imaging [22][23][24][25][26][27][28][29]. Experts are also exploring reflection wave equation and scattering wave equation of reverse time migration in different media [30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Waveform Imaging Based on Linear Forward Representations for Scalar Wave Seismic Data

Lu,

Chen,

Chen

2024

Water

View full text Add to dashboard Cite

The current reverse-time migration, which is based on wave equations for imaging wavefields, employs an imaging formula derived from Claerbout’s imaging principle. This imaging formula is only valid for plane waves with small incident angles on the perfectly flat reflecting surface. However, the complexity of seismic wave propagation may lead to situations that do not meet this requirement. Therefore, this paper divides the subsurface into local scattering and reflecting bodies. It proposes linear forward representations for scattering and reflection data based on perturbations in the physical parameters and wave impedance, respectively. To further describe the effect on the reflecting body boundary, the local reflection coefficient is defined and the linear forward representation for the reflection data based on it is obtained. After that, the proposed linear forward representations are used as the forward equations for the linear inverse of the seismic data, and the seismic data waveform imaging method is developed based on linear inversion theory. At the same time, the specific waveform imaging calculation formulas for scalar wave scattering data and scalar wave reflection data are provided and validated via numerical experiments. Compared with the current reverse-time migration, waveform migration not only has the correct phase and higher resolution in theory but also does not increase the computational complexity. To some extent, it improves the deficiencies of the current structural imaging and provides a basis for subsurface lithological imaging.

show abstract