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PETROPHYSICS AND ROCK PHYSICS APPLICATIONS |
As part of G&W Systems Geosciences Suite™, G & W Systems have developed applications to integrate Petrophysical and Rock Physics analysis into the Geoscientific data analysis workflow. They were designed for rapid Petrophysical and Rock Physics properties characterization. All applications are integrated into the G&W GeoWorkFlow Designer™, so the scientist can build its own workflow to handle complex or new geoscientific challenges.
G&W GeoWorkFlow Designer™
G&W GeoWorkFlow Designer™ is an integrated environment where the geoscientist can define its own approach to solve simple or complex rock properties characterization problems.
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| Seismic Data Analysis Toolkit: |
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The seismic data analysis applications developed by G&W Systems are a part of the G&W Systems Geosciences Suite™. They allow integrated and interactive management, processing, and rapid visual inspection of multi-volume seismic data. |
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G&W GeoWorkFlow Designer™ showing a workflow for displaying logs and crossplot from either files or project data
In G&W GeoWorkFlow Designer™ data generated by different tools and processes is considered as an object the user may interact with. There are many predefined tools the user can use to read data (well logs, well deviation, core data) from different formats (las, ascii, txt), v
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Different applications and tools allow for 2D and 3D spatial and data navigation, visual display of query results, filtering, data inspection and edition, all managed within a centralized environment provided by G&W GeoWorkFlow Designer™.
Special effort has been put into data management modules. One of the objectives is to reduce the time spent by the analyst to organize, validate and manage data to a minimum,
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Petrophysical Tools |
This application allows to generate volumes of local dip and dip direction attributes using a full 3d semblance-weighted averaging algorithm, that creates small analysis surfaces through the sample of interest in all directions at all dip angles and measures amplitude semblance. The results of this measurement are averaged to obtain estimates of the prevailing dip and dip direction. In parallel this process yields an estimate of the local coherency character of the seismic data. |
The Petrophysical tools represent a complete solution for petrophysical characterization. Some functionalities are:
- Las and ascii file reading/writing,
- Automatic log unit validation,
- Edit simple and complex depth shifting,
- Curve and interval isolation,
- True vertical depth calculation,
- Well log reconstruction,
- Core data integration,
- Crossplots and histograms,
- Statistical calculation of mineral volumes
- Water Saturation and more.
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The Petrophysics tools are designed with a multi-physics approach to solve problems. This means Modules cannot exist as separate entities, they are linked together and results should be consistent between different techniques used for calculating parameters, validating each other and at the same time reducing uncertainty.
The development of this tools has been driven by several project performed in the oil industry, and have defined workflows that may be applied to similar problems on other oil fields.
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Rock Physics Tools |
Elastic characterization of subsurface rock is crucial to make sense of seismic amplitudes. The Rock Physics Tools provide the way to integrate well log and core information to determine elastic rock properties, what if scenarios not found in measured data, combination of rock components and fluids that may not be recorded on well logs.
Shear velocity is a log that is seldom found in a project data set. Rock physics provides the means to predict this kind of information, as well as can be a used to check for inconsistencies between different calculated parameters.
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gwRockPhysics™ application was designed to handle all elastic parameters characterization. Some of the main features include:
- Mineral elastic properties calculation
- Theoretical models for elastic fluid properties
- Theoretical models for elastic solids properties
- Fluid substitution
- Monte Carlo Simulation
- Clustering
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gwRockPhysics™ application performing characterization of elastic properties and calculation of AVO effect.
gwRockPhysics™ has been applied to several projects to do response atlases for near and far reflectivities, determining the feasibility of application of quantitative interpretation techniques in order to characterize reservoir rock properties.
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