High-Temperature Downhole Power Storage With Modular Signal Interface
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Solution Overview
Problem
Conventional power systems and energy storage devices fail in high-temperature downhole environments due to degradation or destruction, limiting the capabilities of instrumentation in deep well drilling operations.
Innovation Solution
A downhole power supply system incorporating a high-temperature rechargeable energy storage device, such as an ultracapacitor, and a modular signal interface device, capable of operating between 75°C to 210°C, with a controller for charging and discharging, and buffering power to enhance system efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional energy storage devices and power systems are used in downhole environments, then the system can operate at standard temperatures, but the devices fail due to degradation or destruction at high temperatures up to 300 degrees Celsius
Solution Approach 1:
The patent changes the operating temperature parameter by introducing high-temperature rechargeable energy storage devices that can operate reliably from -40°C to 210°C, eliminating the need for temperature-sensitive conventional devices in downhole environments
Solution Approach 2:
The patent employs composite material structures in the high-temperature energy storage devices, combining materials that can withstand extreme thermal conditions while maintaining electrical performance and structural integrity
2Device complexity
If instrumentation complexity is increased to handle deep well drilling, then measurement and control capabilities are improved, but power demands increase beyond what conventional power systems can provide
Solution Approach 1:
The patent implements dynamic power management through a modular signal interface device that can adapt power distribution in real-time, allowing complex instrumentation to operate within available power constraints while optimizing performance
Solution Approach 2:
The patent segments the power system into modular components including separate energy storage devices, power management modules, and signal interface devices, allowing independent optimization of each component's power consumption and performance
3Device complexity
If conventional power systems are used in high-temperature environments, then the system structure can be simple, but the power systems fail due to temperature degradation
Solution Approach 1:
The patent introduces a modular signal interface device as an intermediary between the high-temperature environment and the power management electronics, providing thermal isolation and signal conditioning that protects sensitive components while maintaining system functionality
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides reliable power and data logging capabilities in extreme temperatures, improving drilling dynamics and extending battery run time by over 50% and increasing efficiency by over 90%, while maintaining performance in harsh downhole conditions.
Implementation Method 1
The energy storage may include at least one ultracapacitor
Data Source
AI summary
A downhole power system includes an energy storage adapted to operate at high temperatures, and a modular signal interface device that serves to control the energy storage component as well as offer a means of data logging at high temperatures. The controller is fabricated from pre-assembled components that may be selected for various combinations to provide desired functionality. The energy storage may include at least one ultracapacitor.