Downhole Transmission Line Component Platform
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Solution Overview
Problem
Downhole drilling operations face challenges in protecting electronic equipment from extreme temperatures, shock, vibration, and corrosive drilling mud, which affects signal communication and data collection efficiency.
Innovation Solution
A component platform for transmission lines that couples onto the line at a non-end point, linking components like RFID circuitry to the line, providing a signal path for communication with a downhole network, and using protective materials to shield the components from harsh conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electronic equipment is placed downhole to perform measurements and data collection, then productivity and measurement precision are improved, but the equipment is exposed to harmful factors including extreme temperatures, shock, vibration, and corrosive drilling mud
Solution Approach 1:
The system divides the downhole measurement function into separate components: electronic circuitry housed in protected sondes that can be periodically retrieved, while the transmission line remains in place. This segmentation allows the sensitive electronics to be protected from harsh downhole conditions while maintaining measurement capability.
Solution Approach 2:
A transmission line serves as an intermediary between the downhole environment and surface equipment. It provides a protected pathway for signal conveyance, allowing electronic components to operate in the hostile downhole environment while transmitting data to the relatively protected surface environment.
2Reliability
If electronic circuitry is protected by placing it in sondes that are periodically lowered and retrieved, then reliability is improved, but loss of time occurs during periodic operations
Solution Approach 1:
The transmission line is installed and positioned in advance within the wellbore, creating a permanent protected pathway. This preliminary action eliminates the need for periodic retrieval and re-installation of electronic components, saving time while maintaining reliability.
Solution Approach 2:
Instead of retrieving the entire electronic system, only specific sonde components are periodically accessed while the transmission line infrastructure remains in place. This partial copying approach maintains the protective infrastructure while allowing selective maintenance.
3Reliability
If downhole tools are adapted to accommodate electronic circuitry with sealing and protection structures, then reliability is improved, but device complexity increases
Solution Approach 1:
The transmission line serves multiple functions: it provides mechanical support, electrical signal conveyance, and environmental protection. This multi-functionality reduces the need for separate protective structures, simplifying the overall device complexity while maintaining reliability.
Solution Approach 2:
The transmission line utilizes flexible insulating materials and thin-film sealing structures that provide protection against drilling mud and environmental factors. These thin-film solutions offer effective protection with minimal added complexity compared to bulk protective structures.
Data Source
AI summary
An apparatus in accordance with the invention includes, in one embodiment, a substantially planar recessed surface for mounting and retaining a component. The platform is configured to electrically couple the component to a transmission line at a non-end point thereof. An outer contour of the component does not exceed an outer contour of the platform, and the outer contour of the platform does not exceed an outer contour of the transmission line. The transmission line is configured to link to a downhole network, and the component is configured to affect a signal on the transmission line.