End Plate for Perforating Gun Assembly
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Solution Overview
Problem
Current detonation systems for perforating gun assemblies suffer from the loss of electronics within tandem subs due to wellbore fluids and debris after detonation, requiring frequent replacement and increasing operational costs.
Innovation Solution
A detonation system with a tandem sub that houses an addressable switch and uses signal transmission pins to deliver detonation signals while sealing off wellbore fluids and debris, protecting the electronics and allowing for reusable components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tandem sub is left open to allow signal transmission pins to pass through, then electrical connectivity is maintained, but wellbore fluids and debris ingress and damage the electronics
Solution Approach 1:
The end plate is divided into multiple sections with through-openings positioned at specific locations. This segmentation allows signal transmission pins to pass through while the remaining portions of the end plate form sealing surfaces that block fluid and debris ingress to the electronics.
Solution Approach 2:
The end plate acts as an intermediary component between the tandem sub interior (where electronics are located) and the exterior (exposed to wellbore fluids and debris). It provides both electrical connectivity through pin openings and protection through sealing surfaces.
2Productivity
If the tandem sub electronics are exposed to wellbore conditions, then signal transmission is possible, but component replacement is frequently required increasing operational costs
Solution Approach 1:
The end plate and sealing surfaces are designed beforehand to protect the electronics from wellbore fluids and debris before damage can occur. This preventive design reduces the frequency of component failures and replacements, improving operational efficiency and reducing costs.
3Ease of operation
If signal transmission pins are made to pass through the end plate, then electrical connectivity is maintained, but the end plate structure becomes more complex
Solution Approach 1:
The end plate is segmented with discrete through-openings positioned to accommodate signal transmission pins. This segmentation approach maintains electrical connectivity while keeping the overall structure relatively simple and manufacturable, avoiding excessive complexity.
Data Source
AI summary
An end plate for a perforating gun assembly. The end plate has a first end defining a first face, and a second end opposite the first end defining a second face. A flange resides between the first face and the second face. The end plate has a first through-opening and a second through-opening. A first bulkhead resides in the first through-opening, and is configured to closely receive a signal transmission pin. A second bulkhead resides in the second through-opening and is configured to closely receive a detonator pin. The signal transmission pin transmits detonation signals through the end plate, while the detonator pin transmits detonation signals back up the wellbore and through the end plate. The end plate may also have an opening along the second face for receiving a ground pin.