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technologies.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Technologies</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="This page aims to show all technologies that we use in our projects" />
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<a href="technologies.html">Technologies </a>
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<span id="foStacking" class="anchor"></span>
<div class="row">
<div class="span12">
<h3><strong>Finite Offset (FO) Stacking and Regularization</strong></h3>
<div class="solidline"></div>
</div>
</div>
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<div class="span12">
<div class="team-box thumbnail">
<h4><b>2D/3D Common Reflection Point (CRP) Regularization</b></h4>
<p style="text-align: justify;">
The 2D/3D CRP Regularization technology is based on Common-reflection-point (CRP) Trajectories. This
approach ensures that only the amplitudes related to the same reflection point are considered on the
regularization process, avoiding reflection-point dispersal on dipping reflectors.
<ul>
<li>Based on CRP trajectories.</li>
<li>Enhancement of events.</li>
<li>Dataset regularization and interpolation.</li>
</ul>
</p>
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<div class="team-box thumbnail">
<h4><b>2D/3D Common Reflection Point (CRP) Spreading</b></h4>
<p style="text-align: justify;">
The 2D/3D CRP Spreading technology is based on Common-reflection-point (CRP) Trajectories allows for
reflection enhancement in prestack domain.
<ul>
<li>Based on CRP trajectories.</li>
<li>Noise attenuation.</li>
<li>Enhancement of events.</li>
<li>Correct conflicting dips.</li>
</ul>
</p>
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<h4><b>2D/3D Total Moveout Correction</b></h4>
<p style="text-align: justify;">
The 2D/3D Total Moveout Correction is a local NMO and DMO moveout correction applied to Common
Reflection Point (CRP) traveltime in prestack domain. This application is capable to convert all CMP
gathers to CRP gathers.
<ul>
<li>Local moveout correction</li>
<li>Converts CMP gathers to CRP gathers</li>
<li>Allows for accurate AVO/AVA analysis</li>
</ul>
</p>
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<h3><strong>HPC and Cloud Computing</strong></h3>
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<div class="team-box thumbnail">
<h4><b>SPITZ Programming Framework</b></h4>
<p style="text-align: justify;">
SPITZ is the HPG's solution to bring modern software features and the best programming practices to a
wide range of HPC systems, from the legacy ones to the newest. We extracted the essence from most
seismic imaging software and created a complete distributed programming framework that is easy to use,
scalable, resilient, and dynamic in nature.
<ul>
<li>Compatible with Cloud environments and legacy systems</li>
<li>Removes the programming effort of handling with distributed computing environments</li>
<li>Facilitates the development and debugging of new software</li>
<li>Allows seamless aggregation of multiple computing systems to form a single computing mesh</li>
<li>Handles node addition, removal, and failure automatically and on-the-fly</li>
<li>Optimizes cost-benefit dynamically on heterogeneous systems like the Cloud</li>
</ul>
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<h3><strong>Time Migration</strong></h3>
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<h4><b>2D/3D Common Reflection Point (CRP) Time Migration</b></h4>
<p style="text-align: justify;">
The 2D/3D CRP time migration performs a Kirchhoff-type time migration and velocity analysis with the use
of a Common-Reflection-Point (CRP) operator. Thus, a velocity model is obtained by analyzing CRP
trajectories and the summation is performed along the optimal CRP curve. Also, a small midpoint
aperture, associated with the projected Fresnel zone (PFZ), is employed for each midpoint, which
restricts the summation to that part of the CRP curve where only constructive interference occurs.
<ul>
<li>Summation over the CRP curve.</li>
<li>High-quality time-migrated results.</li>
<li>Reduced aperture artifacts due to the small aperture needed.</li>
</ul>
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<h4><b>Stretch-Free Stacking</b></h4>
<p style="text-align: justify;">
The Stretch-free Stacking technology allows for stretch-free moveout corrections that can be applied to
any traveltime approximation. This technique can be incorporated into any seismic-processing sequences
since it requires no changes in the estimation of traveltime parameters. The Stretch-free moveout
correction is performed on a separate procedure where the required stretch-free parameters are computed
automatically, considering the previously estimated moveout parameters.
<ul>
<li>Elimination of moveout correction stretching factor.</li>
<li>Applicable to any traveltime approximation.</li>
<li>Can be incorporated into any seismic-processing sequence.</li>
</ul>
</p>
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<h4><b>2D/3D Common Reflection Surface (CRS) Stacking</b></h4>
<p style="text-align: justify;">
The 2D/3D CRS Stacking is a multiparametric traveltime stacking for reflections. The
Common-Reflection-Surface (CRS) traveltime makes full use of redundancy available in the data, once it
considers both midpoint and offset apertures around the central point, providing an enhancement on the
signal to noise ratio. Furthermore, parameter guides ensure geological consistency and estimation
convergence during the estimation of CRS parameters.
<ul>
<li>Full use of redundancy available in the data.</li>
<li>Parameter guides that ensures geological consistency and estimation convergence.</li>
<li>Global estimation of parameters through Differential Evolution (DE).</li>
</ul>
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<h4><b> 2D/3D Double Square Root (DSR) Stacking</b></h4>
<p style="text-align: justify;">
The 2D/3D DSR Stacking performs the full stacking, in prestack domain, of diffractions considering the
Double Square Root (DSR) moveout.
<ul>
<li>Multiparametric traveltime stacking for diffractions in prestack domain.</li>
<li>Superior approximation for diffraction events in prestack domain.</li>
<li>Global estimation of parameters through Differential Evolution (DE).</li>
</ul>
</p>
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<h4><b>2D/3D Double Square Root (DSR) Spreading</b></h4>
<p style="text-align: justify;">
The 2D/3D DSR Spreading technology allows the enhancement of diffractions. The stacking process uses a
DSR diffraction traveltime, in prestack domain The spreading procedure has a similar structure as the
ones used in Kirchhoff migration. The better-resolved diffractions can be used to determine
fault-planes, pinch-outs, discontinuities and perform quality control for time/depth migration,
providing update migration velocity models.
<ul>
<li>Enhancement of diffractions.</li>
<li>Determine fault-planes, pinch-outs, discontinuities.</li>
<li>Perform quality control for time/depth migration.</li>
</ul>
</p>
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<h4><b>2D/3D Time-to-Depth Conversion</b></h4>
<p style="text-align: justify;">
The Time-to-Depth Conversion technology performs time-to-depth conversion based on model ray theory.
Given an initial time-migrated image, the amplitudes in time are mapped to depth through model rays
(traced in depth).
<ul>
<li>Based on model ray theory.</li>
<li>Fast and reliable depth images.</li>
</ul>
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<address>
<strong>High-Performance Geophysics Lab</strong><br>
Cora Coralina 350 St, Cidade Universitária<br>
Campinas/SP Brazil
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