Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/49412
Title: DETECTION OF PHASE INVERSION IN OIL–WATER MIXTURES USING ONLINE VIBRATIONAL VISCOMETER
Authors: VIVEK KOLLADIKKAL PREMANADHAN
Keywords: Viscosity, phase inversion, rheometer, viscometer, droplet size, mixing tank
Issue Date: 19-Jul-2013
Source: VIVEK KOLLADIKKAL PREMANADHAN (2013-07-19). DETECTION OF PHASE INVERSION IN OIL–WATER MIXTURES USING ONLINE VIBRATIONAL VISCOMETER. ScholarBank@NUS Repository.
Abstract: This project aims at the study of 2 phase oil-water flows, addressing a challenge faced in crude oil transportation, phase inversion. Although research on oil-water phase inversion has continued on for over five decades, no concrete theory unifies the phenomenon. This project aims focuses on the phenomenon from a different perspective using an online viscosity measurement technique. This work presents the initial crude measurements with a square mixing tank, standardizing the viscometer with a well-accepted rheometer, and studying 2 phase properties in a characterized mixing tank designed as per chemical engineering standards. The graphs plotting the phase inversion data were found to follow similar trends as graphs found in literature. It was found that phase inversion of oil-water mixtures occured between 60% to 90% oil concentration in most scenarios. It was also found that the viscometer experiments and the rheometer experiments overlapped in the region above 50% concentration of oil in water. The phase inversion point was found to shift to a lower value at higher RPM. Basic droplet size measurements revealed a growth in the oil droplets in water until phase inversion which was in agreement with results found in literature. Further experimental verification of the viscometer measurements are to be conducted on a pipeline facility that is being built in NUS multiphase flow laboratory.
URI: http://scholarbank.nus.edu.sg/handle/10635/49412
Appears in Collections:Master's Theses (Open)

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