Real-Time Flow Rate Meter with Dynamic Discharge Coefficient Calibration
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Solution Overview
Problem
Traditional flow rate meters using orifice plates are unsuitable for measuring drilling fluid flow rates due to large errors caused by varying densities and viscosities, as they lack real-time calibration capabilities to account for fluid property changes.
Innovation Solution
A real-time calibrated flow rate meter system using an orifice plate or venturi meter that integrates with the BaraLogix system for autonomous fluid density and rheology data to calibrate the discharge coefficient, enabling accurate detection of fluid property changes and mass flow rate forecasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional orifice plate flow rate meters are used to measure drilling fluid flow rates, then the device structure is simple and easy to manufacture, but large errors occur due to varying densities and viscosities of drilling fluids
Solution Approach 1:
The system continuously measures fluid density and rheology parameters and uses this feedback to automatically adjust and recalculate the discharge coefficient in real-time, ensuring accurate flow rate measurements despite variations in drilling fluid properties
Solution Approach 2:
The system dynamically changes the discharge coefficient parameter based on measured fluid density and rheology, transforming it from a fixed constant to a variable parameter that adapts to changing fluid conditions, thereby maintaining measurement precision
2Measurement precision
If real-time calibration capabilities are added to account for fluid property changes, then measurement accuracy improves, but device complexity increases
Solution Approach 1:
The system performs self-calibration by automatically measuring its own discharge coefficient using integrated density and rheology sensors, eliminating the need for external calibration equipment or manual intervention, thus improving accuracy without proportionally increasing complexity
Solution Approach 2:
The calibration function is merged with the main flow measurement system by integrating density and rheology sensors directly into the flow meter assembly, allowing simultaneous measurement and calibration in a single unified device
3Measurement precision
If autonomous fluid density and rheology data collection is integrated, then mass flow rate forecasting accuracy improves, but the system complexity increases
Solution Approach 1:
The integrated system performs multiple functions simultaneously: measuring fluid density, rheology, and flow rate, then combining these data to provide both real-time flow measurement and predictive mass flow rate forecasting, maximizing utility without proportional complexity increase
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
This system effectively detects changes in drilling fluid density and viscosity, allowing for improved operational safety and efficiency by predicting mass flow rates and wellbore cleaning efficiency, and enabling real-time adjustments during drilling operations.
Implementation Method 1
receiving a differential pressure indication of a rate of fluid flow
Implementation Method 2
determining viscosity and density data of the fluid flow
Implementation Method 3
determining viscosity and density data of the fluid flow
Data Source
AI summary
A system and method for calibrating discharge coefficients using either an orifice plate flow rate meter or a venturi flow rate meter in a well operation is provided. Using differential pressures obtained from the flow rate meter along with real time calibration of the discharge coefficient with density and rheology data, the flow rate meter can be used in a much more analytical manner. In this way, real time detection of influx or cuttings can be determined in real time, along with estimated concentrations.