High-Pressure Foam Evaluation Kettle for Stable Volume Measurement
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Solution Overview
Problem
Existing methods for studying foamability and stability of foam under high temperature and high pressure conditions are inadequate, particularly in extreme environments like oil drilling and oil recovery, due to challenges in controlling temperature and pressure, and the foam's thermodynamic instability, which affects its generation and stability.
Innovation Solution
A device comprising a reaction kettle with a temperature-resistant silicone rubber sealing ring, water bath thermostatic box, porous hollow steel circular plate, rotator, and multilayer spiral steel wire mesh, along with valves and transmitters, is used to generate and evaluate foam under high temperature and high pressure, allowing precise control of temperature and pressure, and observation of foaming volume and half-life period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If foam is generated in a high-speed mixer and poured into a graduated container for measurement, then foaming volume and half-life period can be determined, but the foam decays rapidly due to thermodynamic instability and environmental changes affect accuracy
Solution Approach 1:
The patent prepares the foam solution and equipment in advance under controlled temperature and pressure conditions before foam generation. The reaction kettle is pre-heated and pressurized, and the foam solution is pre-mixed with surfactants and polymers, ensuring that all conditions are optimized before the actual foam formation occurs, thereby maintaining foam stability during measurement.
Solution Approach 2:
The patent creates a controlled environment within the reaction kettle that isolates the foam from external environmental changes. By maintaining constant temperature and pressure conditions inside the kettle during foam generation and measurement, the system effectively creates a stable, controlled atmosphere that prevents rapid foam decay and eliminates environmental interference with measurements.
2Measurement precision
If temperature and pressure are controlled during foam generation and measurement, then accuracy of determination is improved, but the complexity of the device increases
Solution Approach 1:
The patent combines the foam generation reaction kettle with integrated temperature and pressure control systems into a single unified device. The heating elements, cooling systems, pressure regulators, and foam measurement components are merged into one compact apparatus, allowing temperature and pressure control functions to be performed without requiring separate complex equipment for each function.
Solution Approach 2:
The reaction kettle serves multiple functions simultaneously: it acts as the foam generation chamber, the temperature control vessel, the pressure regulation container, and the measurement apparatus. This multi-functional design eliminates the need for separate dedicated equipment for each function, reducing overall system complexity while maintaining accurate control of all parameters.
3Reliability
If foam solution is compounded with multiple surfactants and polymer reagents to improve foam performance, then foamability and stability under different conditions are enhanced, but the characteristics of foam in compound systems become unknown and harder to study
Solution Approach 1:
The patent segments the foam solution into distinct components (surfactants and polymers) that can be added separately in controlled amounts. The device allows individual components to be introduced into the reaction kettle in a systematic manner, enabling researchers to study the contribution of each component to overall foam performance while maintaining the benefits of compound systems.
Solution Approach 2:
The patent enables systematic variation of composition parameters by allowing precise control of surfactant and polymer concentrations, ratios, and types. The device facilitates changing these parameters independently while maintaining constant temperature and pressure conditions, making it possible to study how specific compositional changes affect foam characteristics in compound systems.
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 device efficiently generates and evaluates foam, enabling accurate determination of foaming volume, half-life period, and resistance to oil, salt, and temperature, while maintaining stability by controlling environmental conditions.
Implementation Method 1
When a circulation function of the water bath thermostatic box is opened, the liquid filled in the water bath thermostatic box circulates between the water bath thermostatic box and the water bath insulation layer to change a temperature in the reaction kettle
Implementation Method 2
a gas diffuser with vortex shape
Implementation Method 3
a porous hollow steel circular plate
Implementation Method 4
a multilayer spiral steel wire mesh
Data Source
AI summary
An efficient generation and performance evaluation device of foam under high temperature and high pressure is provided, the device includes: a reaction kettle, a water bath thermostatic box, a porous hollow steel circular plate, a rotator, a multilayer spiral steel wire mesh, a spring hinge, a gas diffuser with vortex shape, a light-emitting diode (LED) lamp, valves, a screw pump, a pressure transmitter, a temperature transmitter, a fluid reservoir, a gas reservoir and a data collection and analysis device. The device determines a foamability and stability of the foam by injecting foam solution and gas into the reaction kettle, observing a foaming volume and a half-life period of the foam after the gas in full contact with the foam solution to generate the foam, and the device can determine oil resistance and salt resistance of the foam under high temperature and high pressure.