Magnetostrictive Probe Temperature Profiling Downhole
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Solution Overview
Problem
Current temperature sensing technologies in downhole operations can only provide measurements at a single location, which is insufficient for effectively monitoring and controlling various downhole tools and operations, as they generate heat and require comprehensive temperature profiling.
Innovation Solution
A method and apparatus utilizing a magnetostrictive probe to determine temperature profiles along a section of a downhole tool or wellbore, comparing these profiles to selected thresholds, and adjusting operation parameters accordingly, with a processor controlling the tool to maintain optimal temperature conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If single location temperature sensing technologies (resistance temperature detectors, thermocouple) are used, then the device complexity is reduced, but the measurement precision and monitoring capability are insufficient for comprehensive downhole tool monitoring
Solution Approach 1:
The temperature sensing system is segmented into multiple discrete sensing elements distributed along the downhole tool. Each sensing element measures temperature at its specific location, and the combined data provides comprehensive temperature profiling along the entire tool length, resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The system transitions from single-point temperature measurement to multi-point spatial temperature distribution measurement. By adding the spatial dimension along the tool length, the system achieves comprehensive temperature profiling without requiring a single complex sensor, thus improving measurement precision while maintaining manageable device complexity
2Adaptability or versatility
If comprehensive temperature profiling along the downhole tool is implemented, then the monitoring capability is improved, but the device complexity increases
Solution Approach 1:
The temperature monitoring system divides the downhole tool into multiple measurement zones with discrete sensing elements. This segmentation allows comprehensive temperature profiling across different locations while keeping each individual sensor simple, thus improving monitoring capability without proportionally increasing device complexity
Solution Approach 2:
The temperature sensing system is designed with multi-functionality to serve various downhole operations (drilling, production, fracturing) and monitor multiple tools simultaneously. This universal design improves adaptability and versatility across different applications while avoiding the need for separate specialized systems, thereby managing device complexity
3Productivity
If real-time temperature monitoring and closed-loop control is implemented, then the productivity and safety are improved, but the use of energy and system complexity increase
Solution Approach 1:
The system implements closed-loop feedback control where temperature measurements from distributed sensing elements are continuously monitored, compared against threshold values, and used to automatically adjust downhole tool operations. This feedback mechanism improves productivity and safety by enabling real-time adaptive control while using energy efficiently through event-driven operations rather than continuous high-power consumption
Solution Approach 2:
The temperature monitoring and control system is designed to be self-regulating, automatically adjusting operations based on measured temperature conditions without requiring constant external intervention. This self-service capability improves productivity by enabling autonomous real-time control while minimizing energy consumption by activating monitoring and control functions only when temperature thresholds are approached
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
Enables real-time, closed-loop control of downhole operations by providing detailed temperature maps and allowing for adjustments to operation parameters based on temperature thresholds, thereby improving the performance and safety of downhole tools and operations.
Implementation Method 1
A magnetostrictive probe is used to determine a temperature profile
Implementation Method 2
The magnetostrictive probe includes a first notch and a second notch axially separated from each other by a selected interval
Data Source
AI summary
A system, method and apparatus for controlling a downhole operation is disclosed. A tool is operated to perform the downhole operation at a selected downhole location using a first value of an operation parameter of the tool. A magnetostrictive probe is used to determine a temperature profile along a section of a wellbore related to the operation being performed using the first value of the operation parameter. At least one temperature of the temperature profile is compared to a selected threshold. The operation parameter is altered to a second value based on the comparison of the temperature profile to the selected threshold.