alexa Asphaltene Stability in Crude Oil during Production Pro

Journal of Petroleum & Environmental Biotechnology
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Research Article

Asphaltene Stability in Crude Oil during Production Process

Hadi Belhaj1,2*, Hadil Abu Khalifeh1,2 and Nasser Al-Huraibi2
1The Petroleum Institute, Abu Dhabi, UAE
2Regent Group, Calgary, Canada
Corresponding Author : Hadi Belhaj
The Petroleum Institute
Abu Dhabi, UAE
E-mail: [email protected]
Received April 15, 2013; Accepted May 27, 2013; Published June 06, 2013
Citation: Belhaj H, Khalifeh HA (2013) Asphaltene Stability in Crude Oil during Production Process. J Phylogenetics Evol Biol 4:142. doi:10.4172/2157-7463.1000142
Copyright: © 2013 Belhaj H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Asphaltene instability may take place in the reservoir leading to permeability damage and contributing to flow restriction issues. It may also occur in production strings and surface facilities causing conduit clogging. Any change in oil composition or pressure and temperature at any stage of production will destabilize crude oil producing asphaltene precipitation. In this study, the stability of target crude oil under the influence of a direct current (DC) is investigated. The amount of the asphaltene deposit and its electrical charge at various operating conditions are investigated. The method consists of applying a DC voltage between two metal electrodes immersed in the crude oil sample. The amounts of deposits accumulated on the surfaces of the electrodes are recorded during experiment time utilizing a miniature two load cells connected to the electrodes. Electric field strength up to 500V is applied. This study confirms that asphaltene colloids are electrically charged. The fact that deposits form on the anode surface proves that asphaltene particles possess a negative charge. The experiment shows that time and potential differences are sensitive parameters. At the first 24 hours, all the asphaltene in the crude oil were extracted. This phenomenon reflects either limited amount of asphaltene exists in the sample, or that the resin content plays a major role in asphaltene colloids charge switch.

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