Development of models to predict the viscosity of a compressed Nigerian bitumen and rheological property of its emulsions

Development of models to predict the viscosity of a compressed Nigerian bitumen and rheological... The viscosity of a compressed Nigerian bitumen was measured over a temperature range of 85°C to 150°C. It was found that the viscosity at 85°C and atmospheric pressure, increased from 1894mPas to 2787mPas at 7MPa. At the temperature of 150°C, the viscosity increased from 65mPas (at atmospheric pressure) to 71mPas at 7MPa. Water-in-oil and oil-in-water emulsions were formed in a microreactor. The viscosity of original oil at 60°C and shear rate of 0.14s−1 increased from 34,535mPas to 46,130, 59,867, and 71,912mPas due to the formation of water-in-oil emulsions containing 15%, 35% and 55% w/w water dispersed in the oil phase, respectively. On the other hand, the viscosity at the same condition was found to have decreased to 239.9mPas and 1260mPas as a result of 55% and 70% w/w oil particle dispersed in the alcoholic-caustic solution containing hydrophilic polymeric surfactant. The flow activation energy Ea decreased with increasing water fraction (increased viscosity) for W/O emulsions and increased with increasing water fraction (decrease in viscosity) for O/W emulsions. Moreover, viscosity prediction models have been developed and verified using the experimental data. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Petroleum Science and Engineering Elsevier

Development of models to predict the viscosity of a compressed Nigerian bitumen and rheological property of its emulsions

Loading next page...
 
/lp/elsevier/development-of-models-to-predict-the-viscosity-of-a-compressed-o0ljwSYz2y
Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0920-4105
eISSN
1873-4715
D.O.I.
10.1016/j.petrol.2016.06.040
Publisher site
See Article on Publisher Site

Abstract

The viscosity of a compressed Nigerian bitumen was measured over a temperature range of 85°C to 150°C. It was found that the viscosity at 85°C and atmospheric pressure, increased from 1894mPas to 2787mPas at 7MPa. At the temperature of 150°C, the viscosity increased from 65mPas (at atmospheric pressure) to 71mPas at 7MPa. Water-in-oil and oil-in-water emulsions were formed in a microreactor. The viscosity of original oil at 60°C and shear rate of 0.14s−1 increased from 34,535mPas to 46,130, 59,867, and 71,912mPas due to the formation of water-in-oil emulsions containing 15%, 35% and 55% w/w water dispersed in the oil phase, respectively. On the other hand, the viscosity at the same condition was found to have decreased to 239.9mPas and 1260mPas as a result of 55% and 70% w/w oil particle dispersed in the alcoholic-caustic solution containing hydrophilic polymeric surfactant. The flow activation energy Ea decreased with increasing water fraction (increased viscosity) for W/O emulsions and increased with increasing water fraction (decrease in viscosity) for O/W emulsions. Moreover, viscosity prediction models have been developed and verified using the experimental data.

Journal

Journal of Petroleum Science and EngineeringElsevier

Published: Sep 1, 2016

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off