Multiphase Flow Analysis via Movable Partition Chamber
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Solution Overview
Problem
Existing systems for analyzing multiphase production fluids in the oil and gas industry face challenges in accurately measuring gas volume fractions and flow rates, especially as the ratio of liquid to gas phases varies, leading to reduced accuracy and a limited operating envelope.
Innovation Solution
A system comprising a fluidic measurement chamber, a pressure sensor, a composite sensor, and an actuating unit, which measures varying characteristics of the gas phase at different positions within the actuating unit to determine gas volume fractions and flow rates, while also determining oil and water volume fractions using a composite sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If systems prioritize measuring the gas phase of the multiphase flow, then gas volume fraction measurement accuracy is improved, but measurement accuracy deteriorates as the ratio of liquid phase increases
Solution Approach 1:
The system employs a movable partition wall that dynamically adjusts the measurement chamber volume to accommodate varying gas-liquid ratios. The partition wall can be positioned at multiple locations along the measurement chamber, allowing the system to adapt its measurement geometry based on the instantaneous phase distribution, thereby maintaining measurement accuracy across the complete range of gas volume fractions.
Solution Approach 2:
The measurement chamber is segmented into multiple regions by the movable partition wall, creating distinct measurement zones for gas-phase and liquid-phase analysis. This segmentation allows independent optimization of measurement parameters for each phase while maintaining overall system accuracy across varying multiphase conditions.
2Measurement precision
If systems prioritize measuring the liquid phase of the multiphase flow, then liquid phase measurement accuracy is improved, but measurement accuracy deteriorates as the ratio of gas phase increases
Solution Approach 1:
The movable partition wall dynamically reconfigures the measurement chamber to maintain optimal liquid-phase measurement conditions even as gas-phase content increases. By adjusting the chamber geometry and measurement zone positioning, the system preserves liquid phase measurement accuracy across the complete range of gas volume fractions.
Solution Approach 2:
The measurement system is designed to universally accurately measure both gas-phase and liquid-phase volume fractions across all multiphase flow conditions. The movable partition wall enables the same measurement system to effectively analyze both phases regardless of their relative proportions, eliminating the need for separate optimized systems.
3Device complexity
If a fixed measurement chamber is used, then system simplicity is maintained, but measurement accuracy is limited across varying phase fractions
Solution Approach 1:
The measurement chamber incorporates a movable partition wall that can be positioned at multiple locations, transforming the fixed structure into a dynamically adjustable one. This adds minimal complexity while enabling the system to adapt to varying phase fractions and maintain measurement accuracy across the complete range of gas volume fractions.
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 provides accurate measurements of gas volume fractions and flow rates across a complete range of gas and liquid phase fractions, enhancing the accuracy and operational envelope of multiphase flow analysis without the need for calibration.
Implementation Method 1
The fluidic control unit is configured to communicate with the pressure sensor to detect a first pressure of the multiphase production fluid in the fluidic measurement chamber at the first measurement position
Implementation Method 2
The composite sensor is configured to detect an oil volume and a water volume of the multiphase production fluid in the fluidic measurement chamber
Implementation Method 3
The actuating unit is movable between a first measurement position in the fluidic measurement chamber and a second measurement position in the fluidic measurement chamber
Implementation Method 4
The fluidic control unit further configured to determine a pressure difference between the first pressure and the second pressure and a volume difference between the first measurement position and the second measurement position
Data Source
AI summary
Systems and methods for analyzing a multiphase production fluid, the system including a pipeline fluidly connected to a fluidic measurement chamber, a pressure sensor, a composite sensor, an actuating unit, and a fluidic control unit. The pipeline is configured to supply the multiphase production fluid to the fluidic measurement chamber. The composite sensor is configured to detect an oil volume and a water volume of the multiphase production fluid in the fluidic measurement chamber. The actuating unit is partially disposed in the fluidic measurement chamber and is movable between a first measurement position in the fluidic measurement chamber and a second measurement position in the fluidic measurement chamber. The fluidic control unit is in communication with the fluidic measurement chamber, the pressure sensor, the composite sensor, and the actuating unit, and is configured to communicate with the pipeline to supply the multiphase production fluid to the fluidic measurement chamber.