Well data are often acquired in different formats, with different sampling rates, requiring appropriate processing for modern geological modeling. Geophysical and geological reservoir characterization both require specific log processing and editing, for example rock-typing from logs and cores, seismic signature analysis, and AVO feasibility analysis.
EasyTrace takes advantage of a true spreadsheet environment that offers advanced 1D data editing, analysis and processing functionalities to help geoscientists in their daily work. EasytraceTM is also plugged on the OpenFlow® platform and shares all its powerful capabilities with all the other OpenFlow SuiteTM applications.
EasyTrace is used on a daily basis by its users in many geoscientific workflows such as:
- Well log interpretation
- Seismic reservoir characterization
- Electrofacies and rock-typing
- Gross deposiitonal environment
- Source rock evaluation
Featuring a wide range of data import filters, EasyTrace allows the manipulation and analysis of any kind of data: continuous and discrete logs, core data (CCAL & SCAL), fracture data, markers, in time and depth domains. Its high number of functionalities and high level of interactivity between graphs, histograms or cross-plots allow for efficient data understanding and analysis.
Geophysical applications including:
- Sonic lig calibration with checkshots or VSP data
- AVO/AVA analysis and modeling
- Signal simulation
- Pore pressure prediction
- Rock physics and Biot-Gassmann fluid subtitution
Petrophysical applications including:
- Well log and core interpretation
- Electrofacies and rock-type classification
- Principal Component Analysis
- Saturation height modeling
- Total Organic Carbon estimation using conventional logs
EasyTrace is a natural pre-processing tool for different workflows such as electrofacies determination for matrix characterization, data preparation for lithoseismic inversion, fracture data analysis or plug data management like KrPc and classification for rock-typing.
- Powerful toolbox for multi-well data analysis and processing
- Machine learning and deep learning open-source librairies thanks to direct communication with Python
- Unmatched versatility and ease-of-use
- Innovative patented machine learning classification for electrofacies and rock-typing
- Accurate reservoir characterization through seamless integration of well data with other petrophysical measurements
- Advanced petro-elastic modeling and log substitution
Functionalities
PETROPHYSICAL COMPUTATION
• Shale volume calculation
• Porosity calculation
• Water saturation calculation
PRINCIPAL COMPONENT ANALYSIS (PCA)
• Projection on principal factors
• Log data filtering using the selected components
ELECTROFACIES DETERMINATION
• Electrofacies analysis with probabilistic non-supervised approach
• Fast-track non-supervised log clustering
• Electrofacies analysis with a supervised approach for integrating core
facies or petrophysical facies
• Porosity / permeability modeling per facies
• Facies log smoothing using probabilistic relaxation techniques
ROCK-TYPING
• Rock-typing from classification of capillary pressure curves, Leverett
functions, or pore throat size distribution, based on curve shape pattern
recognition algorithm.
• Quantitative assessment of consistency between rock-types and
lithofacies / electrofacies
• Water saturation height modeling
TOC ESTIMATION
• Assessment of source rocks organic content from conventional logs:
computation of a continuous log
• Interactive pole position move for calibration
PORE PRESSURE PREDICTION
• Normal velocity trend modeling with linear or power law
• Estimation of pore pressure using Eaton’s method
ROCK PHYSICS
• Mineral database with Voigt-Reuss-Hill mixture
• Fluid database with Batzle-Wang estimation
and Reuss formula for mixture
• Hashin-Shtrickman bound for petro-elastic parameters
• S velocity estimation by Greenberg-Castagna method
• Biot-Gassmann Fluid Substitution
SIGNAL SIMULATION
• Generation of a complete set of wavelets from analytic or user-defined
characteristics
• Interactive wavelet definition through display and editing of phase and
frequency content
SONIC LOG CORRECTION
• Sonic log calibration in the depth domain using checkshots or VSP’s
• Sonic log calibration in the time domain using seismic markers
• Time-to-depth conversion
LOG PROPERTY SIMULATION
• Property calculation from lithologies
• Density estimation from P velocity and lithology
• P velocity estimation from density and lithology
• S velocity estimation from lithology, density and effective porosity
AVO / AVA ANALYSIS AND MODELING
• AVO curves: Shuey, Aki & Richards, Zoeppritz
• Corrected or plane wave CDP gathers
• Ability to take into account the anisotropy of the media
• Analysis of imported CDP gathers
• Gradient and intercept display (Rho) and cross plot
FRACTURE AVAZ MODELING
• Fracture parameters management
• Mori-Tanaka or self-consistent homogenization
• AVAz curves and maps generation
• Velocity, reflectivity and synthetic seismogram computation
VERTICAL SEISMIC PROFILE INVERSION
• Management of first break points for depth/time conversion; snap options
• Weight zone edition, cost function monitoring
• VSP inversion with or without a priori impedance log
EasyTrace
Well Log Analysis
TM
Data Management
DATA IMPORT/EXPORT
• LAS 2.0 and 3.0 import
• Multi-well ASCII import for well heads, markers, logs, cores data (SCAL
& CCAL)
• Binary well import
• SEG-Y and SEP import for seismic data
• Cultural data (.leg)
• Images (.jpg, .gif, .png, .bmp, .xpm)
DATA EDITING
• Log re-sampling (e.g. regular to irregular, regular to interfaces)
• Log blocking
• Graphical or numerical log editing
• Dynamic traces management to follow new traces generation
• Multi-wells compute to propagate computations from well to wells
• Table management for statistics analysis and use in specialized modules
BASIC PROCESSING AND COMPUTATIONS
• Mathematical and logical calculator
• Statistics for quantitative logs or proportion for lithology logs
• Signal processing: derivation, integration, convolution, inter-correlation,
Fourier transform, etc.
• Synthetic seismic trace generation (acoustic and elastic)
• MD <-> TVD law estimation, MD <-> TVD conversion
• Interval, cut-off, Elastic moduli computation, etc.
• Velocity, acoustic and elastic impedance and RC computation
• Trace smoothing (kernel, polynomial, least square) and filtering (frequency)
PRINTING
• Print preview
• Print to file: PDF or SVG
Data Display
• Histograms and cross-plots
• (Multi-)trace display with many graphic settings capabilities
• Interactive displays
• SCAL data display with the ability to put them on log tracks
• Correlation graph with horizontalization functionality
• Base map
• Graphs backup management
• Graphs style management
Extensions and C ustomization
• Links with OpenFlow Suite and InterWell™ for data exchange
• Ability to extend the calculator with user-defined functions in Fortran/C
• Software customization using a resource file
System Requirements
• Operating Systems:
– PC 64 bits Windows 10
– Linux 64 bits RedHat 7
• RAM: 4 GB or more
• CPU: X86-64 processors
• Graphic board: NVIDIA recommended
• Licensing: FlexLM 11.13.1.3 server
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