EPR Spectrometer Flow Cell for Multiphase Fluid Monitoring
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Solution Overview
Problem
Current EPR technologies are unable to take real-time measurements of crude oil properties during multiphase flow in oilfield operations, particularly in scenarios with high water content and varying fluid compositions, which complicates the monitoring and control of fluid management systems.
Innovation Solution
Deployment of an EPR spectrometer system capable of performing on-site, real-time EPR spectroscopy on flowing multiphase fluids, allowing for the extraction of properties and continuous closed-loop control of fluid management systems by determining properties based on EPR spectra and characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If EPR spectroscopy is performed on flowing multiphase fluids to enable real-time monitoring, then measurement capability is improved, but device complexity increases
Solution Approach 1:
A flow cell is introduced as an intermediary component between the flowing multiphase fluid and the EPR spectrometer. The flow cell receives the multiphase fluid, separates phases through gravity or centrifugal force, and directs the oil phase to the EPR detection region. This intermediary structure enables real-time EPR measurement of oil properties without requiring direct analysis of complex multiphase flow, thus improving measurement capability while managing device complexity through functional decomposition.
2Productivity
If off-site analysis is eliminated in favor of on-site EPR monitoring, then productivity is improved, but device complexity increases
Solution Approach 1:
The traditional mechanical/physical sampling and off-site laboratory analysis system is replaced with an on-site EPR spectroscopy system. The EPR spectrometer, equipped with a flow cell and automated data processing, directly analyzes fluid properties at the wellsite in real-time. This substitution eliminates the need for physical sample transport and external laboratory equipment, improving productivity by enabling immediate decision-making while consolidating multiple functions into a single integrated device.
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 monitoring and adjustment of fluid properties, optimizing fluid management and reducing the need for off-site analysis, thereby improving the efficiency and accuracy of oilfield operations.
Implementation Method 1
Electron paramagnetic resonance (EPR), also referred to as electron spin resonance (ESR), is a spectroscopic and imaging technique that is capable of providing quantitative information regarding the presence and concentration of a variety of paramagnetic species within a sample under test.
Data Source
AI summary
Certain aspects of the present disclosure provide methods and apparatus for closed-loop control of a system using one or more electron paramagnetic resonance (EPR) sensors located on-site. With such EPR sensors, a change can be applied to the system, the EPR sensors can measure the effect(s) of the change, and then adjustments can be made in real-time. This feedback process may be repeated continuously to control the system.