Vertical Separation Chamber for Calibration-Free Multiphase Fluid Analysis
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Solution Overview
Problem
Existing systems for analyzing multiphase production fluids in oil and gas industries lack accuracy and require calibration, making it difficult to obtain precise fluid volume fractions and flow rates.
Innovation Solution
A system comprising a fluidic separation chamber with a vertically oriented design, inert gas exhaust valve, pressure sensor, and fluidic supply and analysis unit, which stabilizes gas pressure and measures phase column growth rates to calculate fluid flow rates and volume fractions without calibration, using inert gas to enhance gravitational separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing systems are used to analyze multiphase production fluids, then the analysis can be performed, but the accuracy is insufficient and calibration is required
Solution Approach 1:
The patent replaces traditional mechanical/correlation-based measurement systems with a physics-based system that uses optical detection (light absorption and scattering) combined with gravitational separation. This substitution eliminates the need for calibration while improving measurement accuracy, as the measurements are based on fundamental physical principles rather than empirical correlations.
Solution Approach 2:
The patent changes the measurement parameter from indirect correlation-based measurements to direct optical property measurements (absorption and scattering coefficients). By measuring these fundamental optical parameters and using them with gravitational separation, the system achieves accurate volume fraction measurements without requiring calibration against known standards.
2Measurement precision
If a vertically oriented fluidic separation chamber is used, then gravitational separation is enhanced, but the device size increases
Solution Approach 1:
The patent uses optical detection to create a measurement copy of the phase distribution within the separation chamber. Instead of requiring the entire phase separation process to occur within a compact space, the system optically detects and measures the phase columns as they form, allowing accurate measurements without proportionally increasing the physical chamber size.
Solution Approach 2:
The patent transitions from horizontal to vertical orientation of the separation chamber, utilizing the vertical dimension for gravitational separation. This dimensional change enhances the separation efficiency by allowing phases to separate along the vertical axis under gravity, improving measurement precision while the optical detection system monitors the process in real-time.
3Productivity
If inert gas is supplied to enhance gravitational separation, then separation efficiency improves, but the system complexity increases
Solution Approach 1:
The patent introduces inert gas as an intermediary substance that facilitates gravitational separation by providing buoyancy forces that accelerate phase separation. The inert gas acts as a mediator between the multiphase production fluid and the gravitational field, enhancing separation speed without requiring complex mechanical separation devices.
Solution Approach 2:
The patent uses an inert gas atmosphere within the separation chamber to prevent unwanted chemical reactions while enhancing gravitational separation. The inert environment allows the multiphase production fluid to separate under gravity without oxidation or other chemical interactions, improving separation efficiency while maintaining system simplicity through the use of a chemically inert medium.
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 accurate fluid volume fractions and flow rates close to ground truth measurements, enabling precise analysis of multiphase production fluids without the need for calibration.
Implementation Method 1
a fluidic separation chamber with a vertically oriented design, which stabilizes gas pressure and measures phase column growth rates to calculate fluid flow rates and volume fractions without calibration, using inert gas to enhance gravitational separation
Data Source
AI summary
System and methods for analyzing a multiphase production fluid, calculating production fluid phase flow rates, and calculating an oil/gas and oil/gas/water volume fractions of the multiphase production fluid, are provided. Contemplated systems and method may utilize fluidic piping, a production fluid supply valve, a fluidic separation chamber, an inert gas exhaust valve, a separation chamber pressure sensor, a fluidic separation detector, and a fluidic supply and analysis unit.