Autonomous Ballistic Arming for Safer Perforating Gun Assembly
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Solution Overview
Problem
The shipping and handling of detonators for perforating gun systems in the oil and gas industry pose safety risks and increase costs due to separate packaging and manual loading, which can lead to accidental detonations.
Innovation Solution
An autonomous ballistic arming mechanism that integrates the initiating device within a ballistic barrier, allowing it to be safely installed during shipping and handling, and automatically aligns with a detonating cord upon tool engagement, eliminating separate shipping and handling of detonators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If detonators are shipped and handled separately from perforating gun systems, then safety during shipping and storage is improved, but packaging costs, handling complexity, and operational time increase
Solution Approach 1:
The patent combines the detonator and perforating gun system into a single integrated assembly. The detonator is positioned within the gun system housing with a safety mechanism that prevents accidental detonation during shipping and handling, eliminating the need for separate packaging and handling of detonators while maintaining safety standards.
Solution Approach 2:
The patent introduces a safety mechanism as an intermediary between the detonator and the external environment. This mechanism includes a protective barrier and controlled access features that prevent accidental initiation during shipping and handling, allowing the detonator to be safely integrated with the gun system without direct exposure to external shocks or contaminants.
2Ease of operation
If manual loading of detonators at the well site is performed, then flexibility in operation is improved, but accidental detonation risks to personnel increase
Solution Approach 1:
The detonator is pre-integrated into the perforating gun system assembly during manufacturing, with safety mechanisms already in place. This preliminary action eliminates the need for manual loading at the well site, as the complete assembly can be safely handled and deployed as a single unit, reducing personnel exposure to detonation risks while maintaining operational flexibility.
Solution Approach 2:
The integrated design allows the perforating gun system to be self-contained and self-protecting. The safety mechanisms are built into the assembly itself, eliminating the need for separate manual intervention to load detonators. The system protects itself during handling and deployment, reducing the need for human involvement in high-risk operations.
3Productivity
If detonators are integrated within the perforating gun system, then handling and storage efficiency are improved, but risk of accidental detonation during shipping increases
Solution Approach 1:
The patent applies different quality characteristics to different parts of the integrated assembly. The detonator region is equipped with enhanced safety features including protective barriers, shock isolation mechanisms, and controlled access channels. These localized safety enhancements protect the sensitive detonator area while allowing the rest of the gun system to be handled efficiently, resolving the contradiction between integration benefits and safety risks.
Data Source
AI summary
Systems, methods, and apparatus including an autonomous ballistic arming mechanism that may be used in well systems. A first well tool may include an initiating device, and a ballistic barrier housing the initiating device. The ballistic barrier may be configured to mechanically move when the first well tool is engaged with a second well tool to position the initiating device for ballistically arming the first well tool. The first well tool may be a first perforating gun system, the second well tool may be a second perforating gun system, and the initiating device may be a detonator. The ballistic barrier may mechanically move to align the initiating device with a detonating cord of the second well tool for ballistically arming the first well tool.