Packer Seal Monitoring via Fluid Chamber Pressure Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems for monitoring and controlling annular sealing devices, such as packers in offshore drilling operations, do not provide predictive maintenance or failure prevention, only reacting to detected failures rather than anticipating them.
Innovation Solution
An apparatus and method that monitors the condition of sealing devices by detecting changes in volume or pressure within a fluid chamber, using sensors and pressure transducers to estimate wear and maintain optimal sealing performance, allowing for proactive maintenance and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packers are used in telescopic slip joint systems for marine risers, then sealing between riser and slip joint is achieved, but the packer is subject to wear from reciprocating axial motion and has limited lifespan
Solution Approach 1:
The system performs preliminary actions by monitoring packer condition parameters (pressure, temperature, vibration, acoustic emissions) to detect early signs of wear and degradation. This allows maintenance to be scheduled before catastrophic failure occurs, extending the effective service life of the packer while maintaining reliable sealing.
Solution Approach 2:
The system implements continuous feedback monitoring of packer condition through sensors that track pressure variations, temperature changes, vibration patterns, and acoustic emissions. This feedback enables real-time assessment of packer health and wear rate, allowing operators to adjust operations or schedule maintenance to optimize both reliability and lifespan.
2Reliability
If secondary packers are added to respond to primary packer failure, then seal containment is improved, but system complexity increases
Solution Approach 1:
The monitoring system provides continuous feedback on the condition of the primary packer, enabling early detection of degradation. This allows for proactive maintenance scheduling that can prevent primary packer failure, reducing the need to activate secondary packers and thereby simplifying system operation while maintaining reliability.
Solution Approach 2:
The condition monitoring system acts as an intermediary between the packer components and operators. By providing early warning of primary packer degradation, it enables informed decision-making about when to schedule maintenance versus when to rely on the secondary packer backup, effectively managing system complexity through intelligent coordination.
3Ease of operation
If current monitoring systems react to detected failures, then failure response is enabled, but predictive maintenance and failure prevention are not provided
Solution Approach 1:
The system performs preliminary monitoring and analysis of packer condition parameters to detect early signs of wear, degradation, and potential failure modes. By identifying trends and anomalies before actual failure occurs, the system enables predictive maintenance scheduling that prevents failures rather than merely responding to them, eliminating unplanned downtime.
Solution Approach 2:
Continuous feedback from multiple sensors monitors packer health in real-time, providing early warning of degradation trends. This feedback loop enables operators to take preventive actions, schedule maintenance during planned downtime, and avoid catastrophic failures, thereby recovering time that would otherwise be lost to unplanned outages.
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
Enables predictive maintenance and effective scheduling of seal replacement, preventing failures and ensuring continuous operation by accurately measuring seal wear and adjusting fluid pressure to maintain sealing integrity.
Implementation Method 1
Many types of packer comprise elastomeric or rubber elements that are energised to create a seal by a pressurised fluid. For example, an inflatable packer operates by pumping a fluid into an elastomeric seal element to inflate the packer.
Implementation Method 2
a pressure sensor positioned within the fluid chamber
Implementation Method 3
a piston positioned within the fluid chamber and movable in response to a change in pressure in the fluid chamber
Data Source
AI summary
The invention in provides an apparatus, system and method of monitoring a sealing device. The apparatus comprises an inlet configured to receive pressurised fluid from a seal activation fluid pressure source and an outlet configured to be connected to a sealing device to deliver pressurised fluid to a seal element of the sealing device to energise the sealing device in use. A fluid barrier is disposed between the inlet and the outlet and is operable to isolate the inlet from the outlet. A fluid chamber is defined between the fluid barrier and the outlet, and the apparatus comprises means for detecting a change in condition in the fluid chamber indicative of a change in volume of the seal element of the sealing device.