Flow assurance in waxy crude oil pipelines is challenging due to gelation at low temperatures. This study introduces a novel method for measuring gelation temperature using the evolution of normal force in a rheometer geometry. This new Non-oscillatory non-rotary (NONR) method provides accurate and repeatable results without the need for gel movement. The results align well with existing methods, making it a reliable alternative.
Type of IP
Faculty
Category of Patent
Department
Improving the accuracy of gelation temperature measurements can enhance the reliability and efficiency of crude oil transportation, reducing the risk of pipeline blockages and associated environmental hazards.
- Measures gelation temperature using the evolution of normal force as a function of temperature in a rheometer
- Avoids the influence of shear stress or shear rate, providing more precise measurements
- Demonstrates good repeatability and accuracy for both model waxy oil and real crude oils
- Effective under static conditions without requiring gel movement
- Applicable to other materials exhibiting thermal shrinkage during cooling
9
The Non-oscillatory non-rotary (NONR) method has been validated through experiments and comparison with existing methods, showing good agreement and repeatability. A prototype is currently being developed.
Oil and gas exploration and production, Pipeline transportation, Rheological research
- Oil and gas industry, particularly in flow assurance for subsea pipelines
- Research and development in rheology and materials science