Sealing Element RFID Monitoring for Real-Time Wear Detection
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Solution Overview
Problem
Existing methods for monitoring wear on sealing elements in wellbore devices are subjective and lack real-time capabilities, leading to unexpected failures due to unaccounted factors like drill pipe condition and abnormal damage, resulting in potential well control events.
Innovation Solution
Implementing an array of passive RFID tags embedded in sealing elements to detect wear by interpreting responses from intact and damaged tags, determining material thickness, and predicting potential breakdowns through data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard observation methods are used to identify worn seal elements, then the system remains simple and easy to operate, but real-time monitoring capability is lost and wear quantification is delayed until removal
Solution Approach 1:
The patent replaces mechanical observation methods with electromagnetic RFID technology. Passive RFID tags embedded in the seal element are detected by a reader system, enabling automated wear measurement without physical inspection. This substitution provides real-time data while maintaining operational simplicity.
Solution Approach 2:
The patent introduces RFID tags as intermediary elements between the seal element and the monitoring system. These tags are embedded within the seal material and provide wireless communication of wear data to external readers, enabling non-intrusive real-time monitoring without complex direct measurement systems.
2Reliability
If real-time RFID monitoring is implemented, then wear can be quantified in real-time and predictive maintenance enabled, but device complexity increases due to embedded tags and data processing requirements
Solution Approach 1:
The patent embeds RFID tags within the seal element during manufacturing, before the seal is installed in the wellbore device. This preliminary integration ensures the monitoring capability is built-in from the start, eliminating the need for complex post-installation instrumentation and reducing overall system complexity.
Solution Approach 2:
The passive RFID tags are self-powered by the electromagnetic field from the reader, requiring no internal power source or complex electronics within the seal element itself. The tags automatically respond to queries and provide wear data, enabling monitoring without adding significant complexity to the sealed component.
3Loss of information
If subjective assumptive methods are used to assess seal condition, then the system remains simple to operate, but unexpected failures occur due to unaccounted factors like drill pipe condition and abnormal damage
Solution Approach 1:
The patent implements a feedback loop where RFID tags continuously provide wear data to a monitoring system, which compares current measurements against historical trends and thresholds. This automated feedback mechanism replaces subjective assessment with objective data-driven evaluation, improving accuracy while maintaining ease of operation through automated alerts and reporting.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides real-time monitoring and predictive maintenance of sealing elements, reducing the risk of sudden failures by quantifying wear and enabling proactive replacement, thus enhancing wellbore safety.
Implementation Method 1
Implementing an array of passive RFID tags embedded in sealing elements to detect wear by interpreting responses from intact and damaged tags
Data Source
AI summary
A drilling system is provided that includes a wellbore device. The wellbore device includes a housing including a bore and a seal element composed of an elastomeric material. positioned within the housing, and configured to seal the bore. The wellbore device includes a bearing assembly supported within the housing and configured to enable the seal element to rotate relative to the housing. The drilling system includes a wireless seal wear monitoring system that includes an RFID tag embedded within the seal element and an RFID transceiver and an RFID antenna disposed within a recess of the housing at an axial location adjacent the RFID tag. The RFID transceiver and RFID antenna are configured to communicate with the RFID tag and a control system. The control system is configured to determine a presence of wear in the seal element based on information provided by the RFID tag.