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 of Petroleum Science and Engineering – Elsevier
Published: Sep 1, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
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.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera