PREDICTION OF NEW CORRELATIONS RELATING RHEOLOGICAL PROPERTIES OF INVERT EMULSIONS WITH TEMPERATURE AND PRESSURE | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 13, Issue 3, September 2013, Pages 604-617 | ||
| Author | ||
| Dr. Muhannad A.R. Mohammed | ||
| Abstract | ||
| The main aim of this research is to find the most suitable correlations which relating the rheological properties of invert emulsions of different densities (2.2, 2.4, and 2.5 gm/cm3) with temperature and pressure. According to that an theoretical study has been done to predict these correlations, depending on Rosenbrock optimization technique. Rheological properties such as plastic viscosity, and yield point data at different temperatures and pressures were selected from literature. New correlations were predicted which show firstly the effect of temperature on the plastic viscosity and yield point, and secondly the effect of pressure on these rheological properties. The results indicated that there are a correlations with high accuracy which can represented the effect of temperature and pressure on the rheological properties of invert emulsions (both plastic viscosity, and yield point) for each density which show that the rheological properties of invert emulsions decreased with increasing temperature and increased with increasing pressure. New empirical formulae for the combined effect of temperature and pressure on the rheological properties of invert emulsions for different densities have been developed by using Rosenbrock optimization technique. | ||
| Keywords | ||
| Emulsions; rheology | ||
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