Wellbore Tubular Integrity Evaluation via Multi-Time Logging
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Solution Overview
Problem
Wellbore tubulars are prone to integrity loss due to corrosion, erosion, scaling, and cyclic fatigue, leading to potential environmental hazards and economic losses, as current practices often result in late diagnosis of issues, which can cause severe consequences.
Innovation Solution
A method and system for evaluating tubular integrity within a wellbore by measuring operation parameters and features multiple times to produce integrity logs, determining the rate of change, and performing tubular integrity analysis to identify potential loss locations, allowing for proactive maintenance and risk assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If integrity evaluation is performed only after issues arise, then diagnostic simplicity is maintained, but wellbore reliability deteriorates due to late detection of corrosion, erosion, and other degradation
Solution Approach 1:
The system performs preliminary integrity evaluations by measuring tubular features multiple times before critical failures occur. Integrity logs are created at different times and compared to detect degradation trends, enabling proactive maintenance scheduling and preventing catastrophic failures.
Solution Approach 2:
The system establishes a feedback loop by repeatedly measuring tubular features over time, comparing integrity logs to determine rates of change, and using this information to predict future integrity status. This continuous monitoring feedback enables timely intervention before failures occur.
2Measurement precision
If multiple integrity logs are measured over time to determine rates of change, then prediction accuracy improves, but measurement complexity and cost increase
Solution Approach 1:
The integrity logging system is designed as a universal tool that can measure multiple tubular features (corrosion, erosion, deformation, etc.) using the same basic apparatus. This multi-functional approach reduces the need for multiple specialized devices while maintaining comprehensive evaluation capabilities.
3Difficulty of detecting and measuring
If tubular features are measured multiple times to produce integrity logs, then detection capability improves, but operational time and resource consumption increase
Solution Approach 1:
The system applies partial action by focusing measurements on critical tubular features and locations rather than进行全面 inspection of all parameters. This selective measurement approach maintains detection capability while reducing overall measurement time and resource requirements.
Data Source
AI summary
Methods and systems for evaluating integrity of a tubular located within a wellbore are provided. The method includes measuring an operation parameter of the wellbore, measuring a feature of the tubular two or more times to produce an integrity log each time the feature is measured, and determining a tubular integrity analysis for the tubular by using the integrity logs and the operation parameter. The tubular integrity analysis contains parameter limitations for the tubular. The method also includes determining if tubular integrity is within or outside the parameter limitations. If the tubular integrity is within the parameter limitations, then determine a duration of integrity for the tubular. If the tubular integrity is outside of the parameter limitations, then determine a location on the tubular for loss of tubular integrity.