Attrimod is a multi-scenario, multi-2D seismic forward modeling extension to RokDoc that automates the construction of hundreds of geological scenarios and enables rapid attribute extraction to investigate how geometry and elastic properties control seismic amplitudes.

Key Features

Multi-Scenario 2D Modeling Simultaneous construction of multiple geological models

• Builds hundreds of geological scenarios based on different layer configurations on a single canvas
• Enables matrix or column-row format organization of multiple models simultaneously
• Automates model construction workflows to modify models based on rock physics concepts
• Preserves all previous models when modifying geometry, unlike single-model workflows
• Supports exploration, appraisal, development, and redevelopment applications

Multi-2D Attribute Extraction Rapid analysis across all scenarios

• Derives attributes across all models simultaneously without individual processing
• Extracts attribute sections quickly and easily from hundreds of models
• Enables investigation of impact of both elastic property changes and geometry on seismic response
• Generates attribute databases to maximize understanding of rock property variations
• Supports identification and characterization of areas matching specific geological scenarios

Lithology and Fluid Substitution Workflows Rock physics-driven property variations

• Applies lithology substitution across multiple scenarios simultaneously
• Performs fluid substitution workflows to explore fluid effects on seismic response
• Integrates rock physics models to perturb elastic properties across all models
• Enables investigation of total organic carbon (TOC) and other property variations on seismic signal
• Supports variable contact and pressure perturbation scenarios

Ray Synthetics with Advanced Corrections Accurate seismic forward modeling

• Generates ray-based synthetic seismic with Q (attenuation) corrections
• Includes spherical divergence corrections for realistic amplitude behavior
• Predicts stacked seismic response across all scenarios
• Calculates angle-specific reflectivity (AVO) for pre-stack analysis
• Computes angle-specific impedance values (EI) for detailed characterization

Geometry-Driven Analysis Investigation of structural controls on seismic response

• Explores spatial variations through geometric model libraries
• Investigates effects of layer configuration changes on seismic amplitudes
• Enables comparison of multiple geometries to reproduce seismic behavior
• Supports dip variation analysis with aliasing avoidance through trace density control
• Facilitates understanding of how interface geometry controls seismic response

Well Data Integration Calibration with subsurface observations

• Populates geometric models with well and analog data
• Develops relationships between geometry and rock properties at well locations
• Enables extraction of synthetic seismic at planned well locations
• Supports comparison of forward models with actual well observations
• Facilitates well-to-seismic correlation and validation

3D Volume Export Extended visualization capabilities

• Exports entire model sets as 3D volumes for viewing in seismic interpretation software
• Enables stepping through all models in a seismic viewer
• Supports integration with standard interpretation workflows
• Facilitates comparison of forward models with real seismic data

Interpretation Guidelines Development Unbiased horizon mapping support

• Establishes interpretation guidelines through scenario comparison
• Supports unbiased horizon mapping based on forward model analysis
• Enables geoscientists to understand what seismic images mean in different geological contexts
• Facilitates more confident interpretation decisions

Integration with RokDoc Platform Seamless workflow extension

• Extends RokDoc Rock Physics modeling package capabilities
• Integrates with RokDoc Reservoir Characterization modules
• Combines with 3D cross-plot tools for multi-dimensional analysis
• Supports weighted stack cross-plotting for lithology and fluid discrimination

Benefits

Comprehensive Amplitude Understanding Complete control analysis on seismic response

• Provides complete understanding of seismic amplitudes by including both geometry and elastic property impacts
• Quantifies the relative importance of geometric versus property-driven amplitude variations
• Enables separation of structural effects from lithology and fluid effects
• Reduces ambiguity in seismic interpretation through systematic scenario testing

Rapid Model Generation Accelerated interpretation workflows

• Automates construction of hundreds of models that would be time-prohibitive to build manually
• Reduces interpretation time through batch processing of multiple scenarios
• Enables rapid feasibility assessment for seismic interpretation
• Accelerates field appraisal and development planning

Reduced Interpretation Uncertainty More confident subsurface predictions

• Compares multiple geological and geophysical models to understand uncertainty
• Identifies which scenarios best match observed seismic data
• Reduces risk through systematic exploration of plausible alternatives
• Improves decision-making through comprehensive scenario analysis

Improved Seismic Feasibility Assessment Better-informed exploration and appraisal decisions

• Evaluates seismic feasibility for detecting specific geological features
• Determines whether seismic data can resolve property variations of interest
• Supports amplitude screening for exploration and appraisal
• Enables optimization of seismic acquisition parameters

Enhanced Field Characterization Better understanding of spatial variations

• Maximizes understanding of rock property variations during field appraisal
• Identifies areas within seismic data matching certain geological scenarios
• Characterizes spatial variations in reservoir properties
• Supports more accurate reserve estimates and development planning

Optimized Well Placement Better-informed drilling decisions

• Enables investigation of seismic response at planned well locations before drilling
• Supports well placement optimization through forward model analysis
• Reduces drilling risk through improved pre-drill predictions
• Facilitates better understanding of near-well seismic behavior

Integrated Interpretation Workflow Unified multi-disciplinary approach

• Combines seismic forward modeling with rock physics and reservoir characterization
• Integrates well data, seismic data, and rock physics models in single workflow
• Enables consistent interpretation across multiple data types
• Supports collaborative interpretation among geophysicists and geologists