Subsurface Formation Stress Modeling via Acoustic-Image Data Integration
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Solution Overview
Problem
Current methods for analyzing subsurface formations in oil fields lack an integrated approach to accurately determine stress profiles, which are crucial for optimizing wellbore placement and oil extraction, as they rely on either acoustic or image data alone, missing the comprehensive stress characterization needed for effective resource recovery.
Innovation Solution
A method that integrates acoustic and image data to generate a comprehensive stress profile, including horizontal stress magnitudes, directions, and stress regimes, which is then used to create a detailed model of the subsurface formation, incorporating wellbore information for improved oil field operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only acoustic data is used to determine stress values, then the analysis is simpler, but the stress profile accuracy is insufficient
Solution Approach 1:
The patent combines acoustic data and image data from different measurement methods into a unified stress profile model. The system integrates stress values derived from acoustic impedance variations with stress values from image-based formation analysis, merging multiple data sources to achieve a comprehensive and accurate stress characterization of the subsurface formation.
2Measurement precision
If only image data is used to determine stress values, then the measurement approach is simpler, but the comprehensive stress characterization is incomplete
Solution Approach 1:
The system merges image data-based stress analysis with acoustic data-based stress analysis. Image data provides direct visualization of formation structures and stress-induced features, while acoustic data offers complementary information about subsurface mechanical properties. The integration of these two independent measurement approaches enables comprehensive stress characterization that neither method could achieve alone.
3Loss of information
If acoustic and image data are integrated, then the stress profile comprehensiveness is improved, but the processing complexity increases
Solution Approach 1:
The patent employs an intermediary integration model that reconciles acoustic-based stress values and image-based stress values. This intermediary system processes both data types through a unified framework, applying consistent computational methods and validation criteria to harmonize the different measurement approaches into a single coherent stress profile, thereby preventing information loss while managing processing complexity.
Data Source
AI summary
A method, apparatus, and program product model stress characteristics of a subsurface formation based at least in part on acoustic data and image data associated with the subsurface formation. The acoustic data is analyzed to determine acoustic based stress values, and the image data is analyzed to determine image based stress values. The acoustic based stress values and the image based stress values are integrated to generate an integrated stress profile that includes one or more modeled stress characteristics of the subsurface volume.