Flow Sensor Assembly Condensation Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current flow measurement technologies in hydrocarbon drilling systems face challenges in accurately measuring drilling fluid flow rates due to issues like condensation interference, which can lead to incorrect readings and potential misinterpretation of fluid or gas influxes in the wellbore.
Innovation Solution
A flow sensor assembly that includes a housing with a nozzle to increase fluid velocity and a pressure regulator to direct pressurized fluid against the inner surface, dispersing condensation and improving measurement accuracy, coupled with a non-contact radar level sensor to measure fluid flow levels in the mud return line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a non-contact radar level sensor is used to measure fluid flow levels, then measurement capability is provided, but condensation on the housing surface interferes with measurement accuracy
Solution Approach 1:
The patent introduces a heating element that generates thermal energy to evaporate condensation on the sensor housing surface. The harmful condensation is converted into a removable condition through phase change (liquid to vapor), restoring measurement accuracy without compromising the sensor's operational capability
Solution Approach 2:
The patent changes the temperature parameter of the sensor housing by introducing a heating element. By increasing the housing temperature above the dew point, condensation formation is prevented and existing condensation is evaporated, thereby eliminating the interference with radar signal transmission
2Measurement precision
If a paddle flowmeter is used to measure drilling fluid flow rate, then flow measurement is achieved, but mechanical components are subject to wear and contamination
Solution Approach 1:
The patent replaces the mechanical paddle flowmeter with a non-contact radar level sensor system. The mechanical measurement mechanism is substituted with an electromagnetic wave-based measurement system that measures fluid level without physical contact, thereby eliminating wear and contamination issues while maintaining flow measurement capability
Solution Approach 2:
The patent introduces a dielectric barrier or housing structure as an intermediary between the radar sensor and the drilling fluid. This intermediary allows the radar signal to pass through while protecting the sensor from direct exposure to contaminated fluid, further enhancing reliability
3Ease of manufacture
If the sensor housing is directly exposed to the fluid line, then installation is simplified, but condensation accumulates on the inner surface
Solution Approach 1:
The patent segments the sensor housing into distinct functional zones: a heated zone for condensation prevention and a measurement zone for radar signal transmission. The heating element is positioned in a specific region to create a thermal gradient that prevents condensation while maintaining measurement accuracy
Solution Approach 2:
The patent applies preliminary heating to the sensor housing before fluid contact occurs. By pre-heating the housing to above dew point temperature, condensation is prevented from forming in the first place, eliminating the need for post-installation condensation management
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
Enhances the accuracy of fluid flow rate measurements by effectively removing condensation and other materials from the sensor's surface, reducing errors and enabling timely detection of fluid or gas influxes in the wellbore, thus improving drilling fluid balance monitoring.
Implementation Method 1
the housing comprises a nozzle in fluid communication with the inlet, and wherein the nozzle is configured to increase the velocity of the first fluid as it is emitted from the nozzle
Implementation Method 2
the inlet is configured to direct the first fluid against the inner surface of the housing to disperse condensation disposed on the inner surface of the housing
Implementation Method 3
non-contact radar level sensors that transmit a radar pulse that is reflected off of a surface of the drilling fluid flowing in the mud return line to determine the amount of fluid flowing through the mud return line
Data Source
AI summary
A flow sensor assembly including a housing configured to couple to a fluid line, wherein the housing includes an inlet for receiving a flow of a first fluid, and a sensor coupled to the housing and configured to measure a flow level of a second fluid passing through the fluid line.