[Alumnos] Charla SEG - Dr. Rubén D. Martinez

[Secretaría de Ciencia y Técnica]

*Estimados,*

Les escribimos para recordarles que en el día de hoy tendremos una 
charla de la SEG *a las 1*5*:*3*0 hs. en el Salón Meridiano. *

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Secretaría de Ciencia y Técnica
FCAG*

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***Disertante: Dr. Rubén D. Martinez ***

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Petroleum geoscience consultant and instructor en Reservoir Geoscience, LLC


Título:“How recent advances in seismic depth imaging can enhance 
prospect identification and appraisal.”


Resumen:Seismic depth imaging has matured and become a powerful tool in 
petroleum exploration to accurately map complex structural frameworks. 
In particular, over the last few years, more accurate seismic imaging 
methods have emerged leading to increased resolution of velocity models 
and seismic images. High-resolution velocity models and images enhance 
the accuracy and value of interpretation not only in exploration but 
also in the appraisal phase and, in some cases, field development 
planning. So how is this high resolution achieved? Velocity model 
resolution improvement is achieved by extracting the information content 
of the seismic amplitudes and phases, in addition to the traveltimes, 
using advanced methods such as full waveform inversion (FWI). FWI 
velocity models have resolutions beyond those obtained from classical 
traveltime tomography. High-resolution velocity models deliver not only 
more accurate structural images after conventional migration (Kirchhoff, 
Beam, WEM, or RTM) but they also can be used to enhance prospect 
identification, prospect appraisal and to de-risk drilling by using 
advanced migration methods such as Q migration (QPSDM), imaging of 
primaries and multiples, diffraction imaging, and least squares 
migration (LSPSDM). It is important to recognize that all conventional 
and high-resolution velocity model building and migration techniques 
should also incorporate different types of seismic anisotropy depending 
upon which one fits best the geologic scenarios present in the areas of 
study. In this lecture, I will provide an overview of the most popular 
conventional and high-resolution anisotropic velocity model building and 
migration techniques used in the industry. The strengths and weaknesses 
of these techniques will be discussed, and illustrated, to understand 
their resolution limitations.

I will also discuss and illustrate, with model and real data, the 
performance of these depth-imaging techniques according to the 
resolution requirements for the geologic scenarios commonly encountered 
in conventional and unconventional prospect identification and appraisal 
with the aim of de-risking drilling. The lecture will end with comments 
on my expectations about the future of depth-imaging technology and its 
impact on conventional and unconventional petroleum exploration, 
appraisal, and development.

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