Initiator Head Assembly Wireless Electrical Contact
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Solution Overview
Problem
Existing perforating gun assemblies face challenges in maintaining a pressure differential across components, particularly during the assembly of electrical connections, which can lead to leakage and safety issues due to the need for manual wiring and physical connection of wires, which are prone to twisting, crimping, and misconnection.
Innovation Solution
The initiator head assembly features a wireless connection system where electrical contact components are embedded within a unitary body, allowing for electrical contact without the need for physical wire connections, maintaining a pressure seal through injection molding and integral design, ensuring reliable and safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual physical connection of wires is used for electrical connections in perforating gun assemblies, then electrical signal transmission can be achieved, but pressure leakage and safety issues occur due to twisting, crimping, and misconnection of wires
Solution Approach 1:
The patent replaces manual mechanical wire connection with an automated electrical contact system. Electrical contacts are pre-positioned on the initiator component and automatically engage with corresponding contacts on the cartridge during insertion, eliminating the need for manual wire stripping, twisting, and crimping operations. This substitution resolves the contradiction by maintaining pressure seal integrity through elimination of manual manipulation while simplifying assembly operations through automated electrical connection.
Solution Approach 2:
The patent applies preliminary action by pre-positioning electrical contacts on the initiator component before assembly. The electrical contacts are embedded or attached to the initiator in advance, and the insulating material is pre-applied to expose only the contact portions. During assembly, the initiator is simply inserted into the cartridge and electrical connection is automatically established without requiring any manual wire preparation or connection steps, thus resolving the contradiction between reliability and ease of operation.
2Reliability
If electrical wires are passed through the initiator body for electrical connection, then electrical signal transmission is enabled, but maintaining pressure differential across the component becomes challenging
Solution Approach 1:
The patent extracts the electrical connection function from the main body of the initiator by using separate electrical contacts that are positioned on the initiator surface or embedded in the insulating material. The electrical contacts are taken out as distinct elements that can be automatically engaged during assembly, eliminating the need for wires to pass through the initiator body. This extraction resolves the contradiction by maintaining pressure differential integrity while enabling electrical signal transmission through surface-level contacts.
Solution Approach 2:
The patent introduces insulating material as an intermediary between the electrical contacts and the initiator body. The insulating material allows electrical contacts to be positioned on or near the initiator surface while maintaining the pressure seal of the initiator body. The insulating material acts as a mediator that enables electrical connection functionality without compromising the pressure differential maintenance, thus resolving the contradiction between reliability and device complexity.
3Productivity
If multiple manual assembly steps are used for connecting wires and components, then electrical connections can be established, but manufacturing efficiency and assembly safety are reduced
Solution Approach 1:
The patent replaces manual mechanical wire connection operations with an automated electrical contact engagement system. Electrical contacts are pre-positioned and automatically engage during component insertion, eliminating multiple manual steps including wire stripping, twisting, crimping, and connection. This substitution resolves the contradiction by dramatically improving assembly efficiency while eliminating safety risks associated with manual handling of live explosives and electrical wires.
Solution Approach 2:
The patent applies self-service by designing the initiator and cartridge with pre-positioned electrical contacts that automatically engage during assembly. The electrical connection is established self-service through the insertion motion itself, without requiring separate manual connection steps. This resolves the contradiction by improving productivity through elimination of manual operations while enhancing safety by removing human intervention from dangerous wire handling and connection processes.
Data Source
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AI summary
According to an aspect an initiator head assembly (10, 110) is provided having particular application with a perforating gun assembly, in particular for oil well drilling applications. The initiator head assembly includes a body (20, 120) and an electrical contact component (40, 140) with the electrical contact component embedded therein. In another aspect, the initiator head assembly with the embedded electrical contact component is configured as a unitary component and also to hold a pressure differential across the top and bottom parts of the initiator head assembly. In an aspect, the method of forming the initiator head assembly is also generally described.