Shape-Memory Alloy Oilfield Components for Shock Damping
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Solution Overview
Problem
Current oilfield equipment lacks efficient materials for withstanding mechanical stress and environmental conditions, particularly in fracturing operations, where components may not effectively degrade to allow for subsequent operations or adapt to changing conditions.
Innovation Solution
Incorporating a reactive shape-memory alloy element into a composite structure with a filler material, which can change shape in response to mechanical stress, temperature, or chemical exposure, enabling enhanced durability and adaptability, such as in fracturing plug assemblies and packer components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional materials are used in oilfield equipment, then manufacturing simplicity is maintained, but mechanical strength and durability under stress are insufficient
Solution Approach 1:
The patent employs composite materials consisting of shape-memory alloy elements embedded in a filler material matrix. This composite structure provides superior mechanical strength and durability compared to conventional materials, while the reactive properties of the shape-memory alloy enable adaptation to operational conditions through shape changes in response to stress, temperature, or chemical exposure.
2Adaptability or versatility
If stable materials are used, then structural integrity is maintained, but adaptability to changing operational conditions is reduced
Solution Approach 1:
The patent incorporates shape-memory alloy elements that dynamically respond to operational conditions by changing their shape in response to mechanical stress, temperature variations, or chemical exposure. This dynamic behavior allows the material to adapt to changing conditions while maintaining structural integrity, resolving the contradiction between stability and adaptability.
Solution Approach 2:
The shape-memory alloy elements change their physical parameters (shape, stiffness) in response to environmental stimuli such as temperature and stress. This parameter change capability enables the material to adapt to different operational conditions while maintaining overall structural stability, as the changes are reversible and controlled.
3Duration of action of stationary object
If non-degradable materials are used, then long-term durability is achieved, but ability to degrade for subsequent operations is lost
Solution Approach 1:
The patent utilizes the reversible shape-memory effect to enable the material to transition between functional states. The shape-memory alloy elements can undergo repeated cycles of deformation and recovery, allowing the material to maintain structural integrity during service and then adapt or degrade in a controlled manner when needed for subsequent operations, achieving both durability and adaptability.
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
The composite structure provides improved mechanical damping, shock absorption, and the ability to adapt to operational conditions, allowing for efficient fracturing and subsequent operations by degrading or changing shape in response to environmental stimuli, thus enhancing the longevity and effectiveness of oilfield tools.
Implementation Method 1
a reactive shape-memory alloy element disposed at least in part in a filler material
Implementation Method 2
Reactive super-elastic composite oilfield components
Implementation Method 3
The composite structure provides improved mechanical damping, shock absorption
Data Source
AI summary
An oilfield tool can include a composite structure that includes a reactive shape-memory alloy element disposed at least in part in a filler material.