Manual Internal Shaped Charge Alignment System
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Solution Overview
Problem
Existing perforating gun assemblies for hydrocarbon extraction face challenges in ensuring precise alignment of shaped charges, particularly due to the tightening or torquing of gun housings, which can result in inconsistent firing directions.
Innovation Solution
A manual internal alignment system is developed, featuring a tool string with first and second perforating gun housings, each with a shaped charge holder oriented in a specific direction. A manual alignment tool engages with the second hollow interior to rotate the second shaped charge holder to match the orientation of the first shaped charge holder, ensuring uniform alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If external alignment components are used to align gun housings, then alignment precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
Instead of using external alignment components on the outside of gun housings, the patent inverts the approach by placing alignment features internally within the gun housing. The shaped charge holder itself is configured with alignment features that engage with corresponding features in the gun housing, allowing alignment to occur from the inside out during assembly, thereby eliminating the need for separate external alignment components.
Solution Approach 2:
The patent merges the alignment function with the shaped charge holder assembly by integrating alignment features directly into the shaped charge holder. This combines multiple functions (holding the shaped charge and providing alignment) into a single component, reducing device complexity while maintaining alignment precision.
2Manufacturing precision
If specialized external alignment components are designed for specific gun housing profiles, then alignment precision is improved, but adaptability decreases
Solution Approach 1:
The patent creates a universal alignment system where the shaped charge holder is designed with alignment features that can adapt to different gun housing types. The internal alignment features are configured to engage with various housing profiles through standardized engagement mechanisms, allowing the same shaped charge holder design to be used across multiple gun housing configurations without requiring specialized external alignment components for each housing type.
3Ease of operation
If manual internal alignment tools are used, then ease of operation is improved, but manufacturing precision may be compromised
Solution Approach 1:
The patent designs the alignment system to be self-aligning through precisely manufactured engagement features between the shaped charge holder and gun housing. The alignment features are configured with specific geometric relationships that automatically guide proper alignment during manual assembly, reducing the skill level required for operators while maintaining high alignment precision through the self-correcting nature of the engagement mechanism.
Data Source
AI summary
A shaped charge orientation system may include a first perforating gun housing having a first hollow interior and a second perforating gun housing having a second hollow interior. A first shaped charge holder may be positioned in the first hollow interior and oriented in a first direction. A second shaped charge holder may be positioned in the second hollow interior and oriented in a second direction different than the first direction. A manual alignment tool may engage with the second perforating gun housing to rotate the second shaped charge holder from the second direction to the first direction. A method of manually aligning the first and second shaped charge holders may include marking an outer surface of the first perforating gun housing with a visual indicator in alignment with the first direction, and orienting the second shaped charge holder into alignment in the first direction using a manual alignment tool.