Frangible Disk With Degradable Support for High Pressure Borehole
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Solution Overview
Problem
Traditional frangible disks used in resource recovery and fluid sequestration face limitations in supporting high differential pressures due to the need for a large bore after rupture, which restricts their utility.
Innovation Solution
A frangible disk arrangement with degradable material supports adjacent the disk, reducing the span subjected to pressure and allowing for higher differential pressure capabilities, where the supports degrade after rupture, enabling full bore access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional frangible disks are used with large span to maintain bore integrity, then borehole operation reliability is improved, but differential pressure capability deteriorates
Solution Approach 1:
The disk span is segmented by introducing degradable support structures (such as arms or struts) that divide the continuous disk into smaller segments. These supports reduce the effective span of the disk, allowing it to withstand higher differential pressures without rupturing prematurely, while still maintaining bore integrity during operation.
2Stress or pressure
If degradable supports are added to reduce disk span, then differential pressure capability is improved, but device complexity increases
Solution Approach 1:
The degradable supports are designed as temporary, disposable structures that fulfill their function of reducing disk span during high-pressure operations, then naturally degrade and disappear when no longer needed. This allows the system to achieve high differential pressure capability without permanent structural complexity, as the supports are removed through degradation rather than requiring complex removal mechanisms.
3Stress or pressure
If disk span is reduced to increase pressure rating, then differential pressure capability is improved, but bore integrity during operation deteriorates
Solution Approach 1:
The degradable supports act as intermediary structures that temporarily reinforce the reduced-span disk during high-pressure operations, enabling it to maintain bore integrity. Once the operation is complete or pressure conditions change, the supports naturally degrade and disappear, allowing full bore access without compromising the disk's pressure-bearing capability during the critical operational period.
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 solution enhances the ability to manage higher differential pressures without premature rupture and ensures a full bore is achieved after disk failure, facilitating fluid passage and tool passage requirements.
Implementation Method 1
the supports 24 will go away based upon exposure to downhole fluids, flow, or both
Data Source
AI summary
A frangible disk arrangement including a frangible disk disposed in a groove of a housing, and a degradable material support disposed adjacent the disk. A method for managing a borehole operation including pressuring against the frangible disk arrangement, exceeding a pressure rating of the frangible disk, rupturing the frangible disk, and degrading the support. A borehole system including a borehole in a subsurface formation, a string in the borehole, and a frangible disk arrangement disposed within or as a part of the string.