High-Frequency Current Transformer for ESP Failure Prediction
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Solution Overview
Problem
Existing methods for predicting electric submersible pump (ESP) failures in oil wells are expensive and inadequate, particularly when using filtered pulse width modulated adjustable speed drives, as they fail to effectively monitor high-frequency transient phenomena.
Innovation Solution
A high frequency current transformer made of Proto-pasta Rustable Magnetic Iron Metal PLA Composite, combined with a signal converting circuit and voltage divider, converts high-frequency current into a scalable 4-20 mA signal for continuous monitoring, using a local analog display to predict ESP failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional monitoring methods are used for ESP failure prediction, then expert analysis can identify failures, but the cost is high and the method is inadequate for detecting high-frequency transient phenomena
Solution Approach 1:
The patent replaces traditional mechanical/electrical monitoring methods with optical detection using a photodetector. The photodetector converts high-frequency current transients into optical signals that can be analyzed for ESP failure prediction, providing superior detection capability while maintaining relatively simple system architecture
Solution Approach 2:
The patent transforms the monitoring approach by changing the parameter domain from direct electrical measurement to optical signal detection. By converting high-frequency current transients into optical signals through a photodetector, the system achieves enhanced detection precision for transient phenomena without requiring complex electrical measurement equipment
2Measurement precision
If high-frequency monitoring is implemented to detect transient phenomena, then detection precision improves, but device complexity and cost increase
Solution Approach 1:
The patent substitutes complex high-frequency electrical measurement systems with a photodetector-based optical detection system. This approach achieves high transient detection accuracy while simplifying the manufacturing and implementation process, as photodetectors are commercially available components that do not require complex calibration or shielding
Solution Approach 2:
The patent introduces an optical signal as an intermediary between the high-frequency current transients and the analysis system. The photodetector converts electrical transients into optical signals, which serve as a mediator that preserves transient information while being easier to process and analyze with standard equipment
3Reliability
If continuous monitoring is implemented to maximize system uptime, then reliability improves, but energy consumption and system complexity increase
Solution Approach 1:
The patent implements continuous monitoring through periodic detection of high-frequency transients using a photodetector. The system continuously analyzes transient phenomena occurring at high frequencies, enabling real-time failure prediction while maintaining low energy consumption due to the passive nature of photodetector detection
Solution Approach 2:
The photodetector-based system provides self-service continuous monitoring by passively detecting transient phenomena without requiring active power consumption for signal generation. The system leverages the existing electrical transients in the ESP circuit, converting them into optical signals for analysis without adding significant energy burden
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
Provides cost-effective, continuous monitoring of ESP degradation and failure, maximizing system uptime by detecting partial discharge and current flow transients, reducing reliance on expensive expert analysis.
Implementation Method 1
A high frequency current transformer... converts high-frequency current into a scalable 4-20 mA signal
Implementation Method 2
The high frequency current transformer is formed out of a magnetic iron metal Proto-pasta Rustable Magnetic Iron Metal PLA Composite (PLA) composite
Data Source
AI summary
A 1-50 megahertz high frequency current transformer made from a PLA composite that predicts when an electric submersible pump system will fail. high frequency current transformer generates a 4-20 milliamp signal that indicates when the electric submersible pump system will fail.