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Proceedings Paper

Studies of stability of petroleum emulsions by confocal microscopy
Author(s): J. Hung; J. Castillo
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Paper Abstract

Developments of techniques such as confocal microscopy are been of great interest for the petroleum industry. Confocal images permits through of direct observation, obtain the acquisition and interpretation of in situ information of the petroleum emulsions systems, without requirement of sample pretreatments and can be applied to samples of high optical density as crude oils. This property of the confocal technique is of great utility for studies of the colloidal structural evolution in dark samples as asphaltenes, and water in crude oils emulsions. In this work, the applicability of a homemade confocal microscope is shown. Studies of stability of colloidal suspensions (asphaltenes and emulsions) such as aggregation kinetic, flocculation dynamic, and characterization of colloidal system are showed by confocal images. The aggregation process of flocculated asphaltenes for Furrial crude oils was showed through of high-resolution micrographics image, and their colloidal structural evolution are described by an analysis of size distribution of flocculated asphaltenes particles. Additional, the images of the dynamics in the drop size and drop size distributions during the initial stage of the separation of water drops from Furrial crude oils were also reported. This technique directly permitted for example, visualization of the coalescence of small droplets to form large ones from water-in-crude oil emulsions and visualize the morphology of flocculated asphaltenes.

Paper Details

Date Published: 17 October 2006
PDF: 10 pages
Proc. SPIE 6377, Advanced Environmental, Chemical, and Biological Sensing Technologies IV, 63770V (17 October 2006); doi: 10.1117/12.685246
Show Author Affiliations
J. Hung, Instituto Venezolano de Investigaciones Científicas (Venezuela)
J. Castillo, Univ. Central de Venezuela (Venezuela)


Published in SPIE Proceedings Vol. 6377:
Advanced Environmental, Chemical, and Biological Sensing Technologies IV
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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