Movies

Toward accurate seismic flattening (to be updated)

––the conventional flattening with local slopes is not good enough, we find a way to improve it.



Fault imaging with optimal path (2D) or surface (3D) voting

Wu, X. and S. Fomel, 2018, Automatic fault interpretation with optimal surface voting. Geophysics, Vol. 83 (5),  O67-O82. [PDF]


input attribute

optimal path voting (1.24 seconds with an 4-core computer)


input attribute

output after optimal surface voting (30.38 seconds with an 4-core computer)


Automatic horizon extraction

Wu, X. and S. Fomel, 2018, Least-squares horizons with local slopes and multi-grid correlations, Geophysics, Vol. 83(4), IM29-IM40. PDF]


With only local slopes, the horizon converges at the wrong location.

With both local slopes and multi-grid correlations, the horizon converges at the correct location.


 

 

Horizon extraction by least-squares fitting both local slopes and multi-grid correlations. The multi-grid correlations, computed by dynamic time warping, are helpful to compute a horizon that follows consistent phases and accurately tracks reflections across faults.


Incremental correlation of multiple well logs

Wu, X., Y. Shi, S. Fomel, and F. Li, 2018, Incremental correlation of multiple well logs following geologically optimal neighbors. Interpretation, Vol. 6(3), T713-T722. [PDF]


Estimating correlation confidence (black curve) while correlating well logs.


Interactive salt boundary interpretation

Wu, X., S. Fomel, and M. Hudec, 2018, Fast salt boundary interpretation with optimal path picking. Geophysics, Vol. 83(3), O45-O53. [PDF]

Try it out with my Java package on GitHub: https://github.com/xinwucwp/sbp


Interpret complicated salt boundaries by interactively picking only a limited number of control points near the salt boundaries.


3D subsurface modeling

Wu, X., 2017, Building 3D subsurface models conforming to seismic horizons, faults, unconformities, and stratigraphic features. Geophysics, Vol. 82(3), IM21-IM30.


Fault likelihood scanning

Hale, D., Methods to compute fault images, extract fault surfaces, and estimate fault throws from 3D seismic images, Geophysics, 78(2), O33-O43.

Wu, X. and D. Hale, 2016, 3D seismic image processing for faults. Geophysics, 81(2), IM1-IM11.

Technical talk: https://www.youtube.com/watch?v=wp6Vhv3BxBE


scan over all possible combinations of fault strikes and dips to find the maximum fault likelihood (fault-oriented semblance)


Unfaulting and flattening

Wu, X., S. Luo, and D. Hale, 2016, Moving faults while unfaulting 3D seismic images. Geophysics, 81(2), IM25-IM33.

Wu, X. and D. Hale, 2015, Horizon volumes with interpreted constraints. Geophysics, 80 (2), IM21-IM33.

Technical talk: https://www.youtube.com/watch?v=gDxfLuYf3C8


undo the faulting and folding within a 3D seismic volume

 


Interactive horizon surface interpretation

Wu, X. and D. Hale, 2015, Horizon volumes with interpreted constraints. Geophysics, 80 (2), IM21-IM33.

Wu, X. and D. Hale, 2013, Extracting horizons and sequence boundaries from 3D seismic images. 83rd SEG Abstract.

Technical talk: https://www.youtube.com/watch?v=0vNoM4-c3E0


I implemented this for Transform/Drillinginfo during my 2014 summer intern.