Finned Insert Travel Limiter for Beam Spring Seal Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional beam springs used in downhole applications experience overstress and plastic deformation due to high compressive loads, which compromises their effectiveness in maintaining seals under varying temperature conditions.
Innovation Solution
Incorporation of thin finned inserts within the slots of the beam spring to act as travel limiters, preventing overstress by distributing the compressive load and maintaining the spring within its elastic range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the beam spring is designed to be highly compressible to maintain seal under temperature variations, then the sealing effectiveness is improved, but the beam spring may exceed its yield strength and plasticly deform under high compressive loads
Solution Approach 1:
A travel limiter is introduced as an intermediary component between the beam spring and the sealing element. The travel limiter restricts the maximum compression distance of the beam spring, ensuring that the spring remains within its elastic range and does not exceed its yield strength, while still allowing sufficient compression to maintain effective sealing under temperature variations
Solution Approach 2:
The invention changes the operational parameters of the beam spring by limiting its axial travel distance. The travel limiter is configured to prevent the beam spring from compressing beyond a predetermined distance, thereby changing the spring's compression parameter to stay within the elastic range while maintaining sealing effectiveness
2Adaptability or versatility
If the beam spring is made more compressible by adding slots, then its ability to accommodate thermal expansion and contraction is improved, but its structural strength decreases making it susceptible to overstress
Solution Approach 1:
The travel limiter serves as a mediator that compensates for the reduced structural strength of the slotted beam spring. By mechanically limiting the compression travel, the travel limiter prevents the spring from experiencing overstress conditions that would exploit the weakened structure created by the slots
Solution Approach 2:
The travel limiter provides beforehand cushioning by pre-establishing a mechanical barrier that prevents the beam spring from entering the plastic deformation zone. This protective measure is in place before any thermal cycling occurs, ensuring the spring remains within safe stress limits throughout its operational thermal range
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 finned inserts effectively limit axial travel, preventing plastic deformation and ensuring the beam spring maintains seal integrity across wide temperature ranges, enhancing the performance of downhole tools like packers and tubing hangers.
Implementation Method 1
maintaining the spring within its elastic range
Implementation Method 2
distributing the compressive load
Data Source
AI summary
Some implementations include an apparatus comprising a finned insert configured for placement within at least a portion of an inner circumference of a slotted compressible tubular, the finned insert having a plurality of fins, wherein each fin of the plurality of fins is configured to fit within a slot of the slotted compressible tubular.