Effect of Temperature and Impurities on Surface Tension of Crude Oil
Universal-Publishers, 30 Jul 2010 - 125 halaman
Surface tension is one of the major issues encountered in the oil industry. This study investigated the laboratory effect of temperature and impurities on surface tension of crude oil samples and water. The aforementioned tests were carried out (in line with industrial standard) on the samples in order to determine the relationship between surface tension, temperature and impurities and also to compare the variation in the measured property due to temperature and impurities. Prediction equations were also built. The results show that surface tension decreases with an increase in temperature in the crude oil samples, water and detergent, while there was an increment in the presence of salt and bentonite as the concentrations increase. We also observed that surface tension increases with water-in-oil emulsion. Also, we see a strong relationship between temperature, impurities and the measured property (surface tension) with an r2 value range of 0.7441 to 0.8638 in all the tests carried out. This study utilized graphic and statistical illustrations to highlight the effect of temperature and impurities on the investigated property and the corresponding effect in the oil industry. The collective and individual relationship between the independent and dependent variable was highlighted and variations were scientifically explained. The prediction equations serve as a quick guide to reservoir engineers to determine the variation in the measured property from other samples of crude oil and water.
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acetic acid API gravity beaker bentonite g bentonite in water brines calculated capillary pressure caustic coefficient clockwise to raise coefficient of determination conc contact angle Corrected values correction factor correlation critical micelle concentration Crude oil 100ml crude oil samples CSC Scientific density detergent DuNouy Tensiometer dynes/cm dynes/cm effect of surfactants effect of temperature emulsion Experimental Procedure formic acid Graph of surface hexadecane higher the surface increase independent variable interfacial tension Knob liquid mass of bentonite mass of salt molecular molecules NaCl nut on back oil A Crude phase quantity relationship ring immersed ring method ring snapped salt concentration sample cup sample table assembly sodium chloride surface or interfacial surface tension values Surface tension versus surfactant temperature and impurities tension against mass tension and temperature tension of crude tension of water value of surface values of table variable surface tension viscosity volume of water Water 100ml Bentonite