Perforating Gun End Caps for Legacy System Compatibility
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Solution Overview
Problem
Existing perforating gun systems face compatibility issues between older reusable systems and newer pin-to-pin models, leading to financial investments in outdated technology.
Innovation Solution
The development of interchangeable end caps and tandem subs with pin-to-pin systems, including bottom and top end caps with addressable switches and electrically conductive cores, and pin-to-pin tandem subs, enables compatibility between older and newer systems by facilitating electrical signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If newer pin-to-pin systems are adopted, then system compatibility and electrical signal transmission are improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent introduces a transition assembly with addressable switches and electrically conductive cores as an intermediary component. This assembly mediates between the older charge carrier systems and the newer pin-to-pin electrical signaling systems, enabling compatibility without requiring complete system replacement. The transition assembly translates or adapts signals between different system architectures.
Solution Approach 2:
The end cap devices are designed with multi-functionality to serve both older and newer system requirements. The addressable switches and electrically conductive cores enable the same hardware component to interface with multiple system types, providing universal compatibility across different generations of perforating gun systems.
2Reliability
If newer pin-to-pin systems are adopted, then electrical signal transmission is improved, but manufacturing costs increase
Solution Approach 1:
The patent employs disposable or replaceable end cap assemblies containing addressable switches and electrically conductive cores. Rather than making the entire perforating gun system expensive and complex, the costly electrical signaling components are contained in replaceable end caps that can be manufactured more economically and replaced as needed.
Solution Approach 2:
The system is segmented into modular components, with the expensive electrical signal transmission functionality isolated to the end cap assemblies rather than being integrated throughout the entire system. This segmentation allows for more economical manufacturing of individual components and easier replacement or upgrade of specific subsystems.
3Ease of manufacture
If older reusable systems are maintained, then manufacturing costs are reduced, but system adaptability and compatibility deteriorate
Solution Approach 1:
The transition assembly acts as an intermediary that allows older, more economical charge carrier systems to interface with newer pin-to-pin electrical signaling systems. This enables the continuation of using cost-effective older systems while gaining compatibility with modern electrical signaling architectures through the mediating end cap devices.
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
This solution allows for the integration of older charge carriers with newer systems, enhancing compatibility and reducing the need for costly upgrades, thereby optimizing the use of existing infrastructure.
Implementation Method 1
an electrically conductive core at the second end of the bottom end cap which is electrically connected to the addressable switch and acts as a bottom through-wire
Implementation Method 2
an electrically conductive ground ring on an outer surface of the bottom end cap which is electrically connected to the addressable switch and acts as a ground
Implementation Method 3
The detonating cord extends through the charge carrier and is interconnected with the shaped charges held by the charge carrier. When detonated, the shaped charges create perforations
Data Source
AI summary
Three different devices for increasing compatibility between older perforating gun systems and newer perforating gun systems are disclosed. One end cap adapted for use with a charge carrier includes a cutout for holding an addressable switch. Another end cap adapted for use with a charge carrier provides a route for transmission of electrical signals. A pin-to-pin tandem sub also provides a route for transmission of electrical signals between perforating guns.