scholarly journals Shallow structure of the Chalco and Xochimilco sub-basins (southern Mexico basin) based on wave propagation modelling and seismic data

2020 ◽  
Vol 103 ◽  
pp. 102722
Author(s):  
Ernesto González-Flores ◽  
José Oscar Campos-Enríquez ◽  
Raúl Valenzuela Wong ◽  
Carlos Torres-Verdín ◽  
David Ernesto Rivera-Recillas ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Seismic Data ◽  
Southern Mexico ◽  
Shallow Structure ◽  
Propagation Modelling ◽  
Mexico Basin

On the Existence of Uller's Waves*

1951 ◽  
Vol 41 (4) ◽  
pp. 307-311
Author(s):  
Charles B. Officer
Keyword(s):  
Wave Propagation ◽  
General Theory ◽  
Seismic Data ◽  
Physical Foundation

Abstract A re귡mination of a general theory of wave propagation proposed by Uller is carried out. The conclusion is reached that his hypothesis has not been placed on a firm physical foundation and cannot be considered valid in interpreting seismic data.

Full Wavefield Redatuming: Accurate Velocity Modelling for Imaging Beneath Complex Overburden

2021 ◽  
Author(s):  
Farah Syazana Dzulkefli ◽  
Kefeng Xin ◽  
Ahmad Riza Ghazali ◽  
Guo Qiang ◽  
Tariq Alkhalifah
Keyword(s):  
Wave Propagation ◽  
Seismic Data ◽  
Model Building ◽  
Velocity Model ◽  
Surrounding Rock ◽  
Target Area ◽  
Low Density ◽  
Velocity Model Building ◽  
Seismic Image ◽  
Seismic Wavefield

Abstract Salt is known for having a generally low density and higher velocity compared with the surrounding rock layers which causes the energy to scatter once the seismic wavefield hits the salt body and relatively less energy is transmitted through the salt to the deeper subsurface. As a result, most of imaging approaches are unable to image the base of the salt and the reservoir below the salt. Even the velocity model building such as FWI often fails to illuminate the deeper parts of salt area. In this paper, we show that Full Wavefield Redatuming (FWR) is used to retrieved and enhance the seismic data below the salt area, leading to a better seismic image quality and allowing us to focus on updating the velocity in target area below the salt. However, this redatuming approach requires a good overburden velocity model to retrieved good redatumed data. Thus, by using synthetic SEAM model, our objective is to study on the accuracy of the overburden velocity model required for imaging beneath complex overburden. The results show that the kinematic components of wave propagation are preserved through redatuming even with heavily smoothed overburden velocity model.

Wave propagation modelling in confined spaces

2003 ◽  
Author(s):  
C. Waldschmidt ◽  
J.V. Hagen ◽  
H.-L. Blocher ◽  
K. Beilenhoff ◽  
J. Wenger ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Confined Spaces ◽  
Propagation Modelling

Predictive removal of scattered noise

Geophysics ◽  
2006 ◽  
Vol 71 (2) ◽  
pp. V41-V49 ◽  
Author(s):  
Gérard C. Herman ◽  
Colin Perkins
Keyword(s):  
Mathematical Model ◽  
Wave Propagation ◽  
Surface Wave ◽  
Seismic Data ◽  
Coherent Noise ◽  
Data Set ◽  
Near Surface ◽  
Unique Data ◽  
Surface Wave Propagation ◽  
Petroleum Development

Land seismic data can be severely contaminated with coherent noise. We discuss a deterministic technique to predict and remove scattered coherent noise from land seismic data based on a mathematical model of near-surface wave propagation. We test the method on a unique data set recorded by Petroleum Development of Oman in the Qarn Alam area (with shots and receivers on the same grid), and we conclude that it effectively reduces scattered noise without smearing reflection energy.

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