Shaped Charge Liner Retention via Plastic Rings
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Solution Overview
Problem
The use of adhesives in shaped charge manufacturing presents additional costs and environmental concerns, and there is a need for a safer, non-sparking solution to retain the liner and explosive material within the charge case.
Innovation Solution
A shaped charge apparatus featuring L-shaped retainer rings made of plastic, rated up to 400 degrees Fahrenheit, with circumferential grooves for secure retention of the liner and explosive material, and an insulating ring for safety, manufactured using additive manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesives are used to retain the liner and explosive material within the shaped charge case, then the liner and explosive material are securely retained, but additional manufacturing costs are incurred and environmental concerns arise
Solution Approach 1:
The invention extracts and eliminates the adhesive from the shaped charge assembly, replacing it with a mechanical retention system using a charge holder with engagement features that directly secure the liner and explosive material without requiring adhesive materials
Solution Approach 2:
The charge holder acts as an intermediary component between the shaped charge case and the liner/explosive material assembly, providing mechanical engagement features that retain the components without adhesives, thus serving as a mediator that eliminates the need for chemical bonding
2Strength
If traditional metal materials are used for the shaped charge case, then structural strength is achieved, but safety risks increase due to potential sparking
Solution Approach 1:
The invention changes the material parameter of the shaped charge case from traditional metal to a non-sparking material such as high-strength polymer or composite, maintaining structural strength while eliminating the sparking hazard associated with metal
Solution Approach 2:
The invention employs composite materials or non-metallic materials for the shaped charge case that combine the necessary structural strength with non-sparking properties, replacing traditional metal construction to enhance safety
3Strength
If adhesives are used for assembling the shaped charge components, then secure bonding is achieved, but manufacturing complexity and environmental impact increase
Solution Approach 1:
The invention removes the adhesive bonding step from the manufacturing process by implementing a mechanical retention system where the charge holder directly secures components through engagement features, eliminating the need for adhesive application and curing processes
Solution Approach 2:
The charge holder is designed with self-retaining features that automatically secure the liner and explosive material through mechanical engagement, eliminating the need for external adhesives and simplifying the assembly process to a straightforward mechanical fit
Data Source
Figure 1
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AI summary
A shaped charge retainer ring for use in containing the liner of a shaped charge and the explosive material. Generally, when completing a subterranean well for the production of fluids, minerals, or gases from underground reservoirs, several types of tubulars are placed downhole as part of the drilling, exploration, and completions process. These tubulars can include casing, tubing, pipes, liners, and devices conveyed downhole by tubulars of various types. Each well is unique, so combinations of different tubulars may be lowered into a well for a multitude of purposes.