Smart Cellular Scaffold for Mill-Free Bridgeplug Seals
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Solution Overview
Problem
Current bridgeplugs and packers in the oil and gas industry face challenges in providing reliable, reversible seals with enhanced pressure ratings and mill-free operation, particularly in wellbore and casing applications, where mechanical milling is often required for removal.
Innovation Solution
The development of smart devices featuring metallic scaffolds made from smart materials like foams or lattices, infiltrated with deformable elastomeric materials, which respond to thermal, electrical, or chemical stimuli to create seals and degrade over time, eliminating the need for mechanical milling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical milling is used to remove bridgeplugs and packers, then reliable seals can be achieved, but the removal process becomes complex and requires additional mechanical intervention
Solution Approach 1:
The bridgeplug incorporates a soluble bridge material that automatically dissolves in formation fluids over time, enabling self-removal without mechanical milling equipment. This self-service mechanism eliminates the need for complex removal operations while maintaining seal reliability during the production period.
Solution Approach 2:
The bridge material's solubility parameter is specifically selected to match formation fluid characteristics, allowing the bridgeplug to maintain its sealing function under reservoir conditions and then automatically dissolve when exposed to formation fluids, enabling easy removal through parameter change rather than mechanical intervention.
2Device complexity
If traditional bridgeplug materials are used, then simple construction is achieved, but enhanced pressure ratings and mill-free operation cannot be realized
Solution Approach 1:
The bridgeplug employs a composite structure combining a soluble bridge material with a reinforcing scaffold or framework. This composite approach maintains construction simplicity while achieving enhanced pressure ratings through the structural support, and enables mill-free operation through the soluble component's ability to dissolve in formation fluids.
3Adaptability or versatility
If reversible sealing is required, then zone isolation flexibility is improved, but the need for mechanical milling for removal increases device complexity
Solution Approach 1:
The soluble bridge material provides automatic self-removal capability through dissolution in formation fluids, eliminating the need for mechanical milling operations. This self-service mechanism enables reversible zone isolation while maintaining operational simplicity, as the bridgeplug can be removed without complex intervention once its sealing function is no longer needed.
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
These smart devices achieve enhanced pressure ratings and enable mill-free, self-degradation, providing efficient and reversible zone isolation in wellbore applications without the need for mechanical removal processes.
Implementation Method 1
respond to thermal, electrical, or chemical stimuli
Implementation Method 2
respond to thermal, electrical, or chemical stimuli
Implementation Method 3
respond to thermal, electrical, or chemical stimuli
Implementation Method 4
encapsulating structure that encapsulates the scaffold and yields to the response of the scaffold
Implementation Method 5
degrade over time, eliminating the need for mechanical milling
Data Source
AI summary
A smart device includes a scaffold that responds to an applied stimulation and an encapsulating structure that encapsulates the scaffold. The scaffold is formed from at least one smart material that responds to the applied stimulation. The encapsulating structure is formed from a material that yields to the response of the scaffold.