Endothermic Decomposition Cooling for Downhole Components
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Solution Overview
Problem
Existing cooling techniques for downhole components in hydrocarbon exploration and production operations are limited in their ability to absorb heat, leading to potential overheating and tool failure due to environmental stresses like high temperatures and heat generated by sensors and electronics.
Innovation Solution
A system utilizing a cooling material that undergoes an endothermic decomposition reaction to absorb heat from downhole components, with the reaction triggered by a selected temperature or catalyst, allowing for effective heat management and reduced risk of tool failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If evaporative cooling is used to control temperature of downhole components, then temperature control is improved, but the amount of heat that can be absorbed is limited
Solution Approach 1:
The invention changes the physical-chemical parameter of the cooling process from evaporation (phase change from liquid to gas) to endothermic decomposition (chemical reaction). This parameter change enables significantly higher heat absorption capacity because the decomposition reaction absorbs much more thermal energy per unit mass than evaporation does, directly resolving the limitation on heat absorption quantity while maintaining effective temperature control
Solution Approach 2:
The invention utilizes a phase transition in the cooling material itself - the decomposition of the material from solid/liquid state into gaseous products. This phase transition is coupled with the endothermic reaction, where the material transforms chemically while absorbing heat, thereby achieving both temperature control and enhanced heat absorption capacity simultaneously
2Duration of action of stationary object
If traditional cooling methods are used, then operational life is maintained, but heat absorption capacity is insufficient leading to potential overheating
Solution Approach 1:
The cooling material is pre-positioned in thermal communication with the downhole component before the component operates in the high-temperature environment. When the component begins to overheat, the cooling material is already in place and can immediately absorb heat through decomposition, preventing temperature rise before it causes damage. This preliminary positioning ensures both extended operational life and reduced reliability risk
Solution Approach 2:
The invention converts the harmful high-temperature environment into a beneficial trigger for cooling. The heat that would normally cause overheating and failure is instead utilized to trigger the endothermic decomposition reaction of the cooling material. This transforms the harmful thermal energy into the activation energy needed for the cooling reaction, thereby extending operational life and preventing tool failure
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 can absorb significantly more heat than traditional cooling methods, extending the operational life of downhole components and preventing degradation by using endothermic decomposition reactions, which are more efficient than evaporation-based cooling techniques.
Implementation Method 1
the cooling material configured to undergo an endothermic reaction and decompose at a selected temperature and absorb heat from the downhole component
Data Source
AI summary
A system for controlling a temperature of a downhole component is disclosed. The system includes: a cooling material in thermal communication with the downhole component; and a container configured to house the cooling material therein, the cooling material configured to undergo an endothermic reaction and decompose at a selected temperature and absorb heat from the downhole component.