Downhole Localized Heating for Faster Expandable Metal Setting
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Solution Overview
Problem
Existing downhole tools with expandable metal components require prolonged reaction times, often taking up to 90 days, to fully set and anchor within a wellbore, which can hinder operational efficiency and flexibility.
Innovation Solution
Utilizing a downhole localized heater to provide a localized temperature spike, accelerating the expansion process of expandable metal components through galvanic reactions, potentially increasing the reaction rate by up to 100X.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If expandable metal components are used in downhole tools, then the tool can anchor within the wellbore, but the setting time is prolonged up to 90 days
Solution Approach 1:
The patent applies parameter changes by introducing temperature as a controlling variable to accelerate the galvanic reaction. By using a heater to increase the temperature of the expandable metal component, the reaction rate is significantly increased, reducing setting time from 90 days to a much shorter duration while maintaining the anchoring capability.
Solution Approach 2:
The patent employs periodic action through controlled heating cycles. The heater is activated in periodic or controlled intervals to provide the necessary thermal energy to accelerate the galvanic reaction at critical stages of the setting process, optimizing both speed and completeness of the anchoring.
2Productivity
If a localized heater is used to accelerate the expansion process, then the reaction rate increases up to 100X, but the device complexity increases
Solution Approach 1:
The patent applies self-service by designing a system where the downhole tool's own operational energy or waste heat is utilized to accelerate the galvanic reaction. The heater may be powered by the tool's existing power source or by exothermic reactions already part of the setting process, eliminating the need for separate external heating equipment and reducing overall system complexity.
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
Significantly reduces the setting time of expandable metal components in downhole tools to minutes or seconds, enhancing operational efficiency and flexibility in wellbore operations.
Implementation Method 1
accelerating the expansion process of expandable metal components through galvanic reactions
Implementation Method 2
provide a localized temperature spike
Data Source
AI summary
Provided is a method for setting a downhole tool, and a downhole localized heater. The method, in at least one aspect, includes positioning a downhole tool within a wellbore, the downhole tool including expandable metal configured to expand in response to hydrolysis, and positioning a downhole localized heater within the wellbore, the downhole localized heater being proximate the expandable metal. The method additionally includes subjecting the expandable metal to a wellbore fluid to expand the expandable metal into contact with one or more surfaces while activating the downhole localized heater to create a temperature spike and accelerate an expansion of the expandable metal.