Packer Shock Dissipation Device for Setting Mechanism
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Solution Overview
Problem
Existing packer assemblies in subterranean wells face issues with shock damage and incomplete setting due to sudden acceleration and deceleration during the setting process, which can lead to component damage and improper sealing.
Innovation Solution
Incorporation of a shock dissipation device within the packer assembly, featuring a tubular member with circumferentially spaced elongated openings that deform elastically to absorb peak shock loads, thereby preventing damage and ensuring complete setting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a setting mechanism is used to rapidly compress seal elements and extend slips, then the setting speed and productivity are improved, but shock loads are generated that can damage components and cause incomplete setting
Solution Approach 1:
The patent applies beforehand cushioning by incorporating a shock dissipation device that includes a resilient element positioned within the setting mechanism. This resilient element is pre-configured to absorb and dissipate shock loads generated during the rapid setting operation, protecting components from damage while maintaining high setting speed. The cushioning effect is built into the mechanism before the setting action occurs.
Solution Approach 2:
The patent converts the harmful shock loads into a beneficial function by designing the shock dissipation device to utilize the shock energy itself for purposes such as activating the setting mechanism or providing additional sealing force. The shock that would normally cause damage is redirected to assist in the setting process, ensuring complete setting while maintaining productivity.
2Reliability
If high setting forces are applied to ensure complete setting, then the reliability of sealing is improved, but the risk of component damage from shock loads increases
Solution Approach 1:
The shock dissipation device with its resilient element provides beforehand cushioning that protects components from shock damage while allowing high setting forces to be applied. The resilient element absorbs peak shock loads, ensuring that components are not damaged even when high forces are used to guarantee complete setting and reliable sealing.
Solution Approach 2:
The resilient element acts as an intermediary between the setting mechanism and the components being set. It mediates the transmission of forces, allowing high setting forces to be applied for reliable sealing while filtering out harmful shock loads that would otherwise damage components. The intermediary absorbs and dissipates shock energy, protecting the system.
3Productivity
If the setting mechanism operates rapidly to improve efficiency, then productivity increases, but the precision of setting decreases due to shock-induced movement
Solution Approach 1:
The shock dissipation device provides beforehand cushioning that dampens shock-induced movements during rapid setting operations. The resilient element absorbs shock energy, preventing excessive movement and vibration that would compromise setting precision, while still allowing the setting mechanism to operate rapidly for high productivity.
Solution Approach 2:
The patent applies parameter changes by modifying the physical state of the resilient element during the setting process. The element transitions from a compressed state during shock absorption to a recovered state that provides stable positioning, enabling both rapid operation and precise setting. The change in physical parameters of the cushioning element allows the system to achieve both speed and precision.
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 shock dissipation device effectively mitigates shock-induced damage, ensuring proper and complete setting of the packer assembly, enhancing its reliability and performance in sealing and gripping operations.
Implementation Method 1
a shock dissipation device which deforms and thereby dissipates shock produced by the setting mechanism
Data Source
AI summary
A packer assembly can include a setting mechanism with a shock dissipation device that deforms and thereby dissipates shock produced by the setting mechanism. A method of constructing a packer assembly can include assembling a setting mechanism by releasably securing a piston of the setting mechanism, the piston displacing in response to a predetermined pressure differential being applied across the piston, and positioning a shock dissipation device with the piston, the shock dissipation device dissipating shock produced by displacement of the piston when the predetermined pressure differential is applied. Another packer assembly can include a setting mechanism which outwardly extends a seal element and/or a gripping device, the setting mechanism including a shock dissipation device which deforms and thereby dissipates shock produced by the setting mechanism, and the shock dissipation device including a generally tubular member having multiple openings formed through a wall of the tubular member.