Abstract
Yield stress measurements of xanthan aqueous solutions and crude oil-xanthan emulsions were investigated experimentally. The yield stress study was carried out for wide range of crude oil (0–75% by volume) and xanthan gum (0–104 ppm) concentrations. Two types of xanthan polymers of Sigma and Kelzan were used for the current study. Aqueous solutions with higher xanthan concentration displayed higher cycles of shear rate-shear stress rheograms. Both aqueous solutions of Sigma and Kelzan showed similar behavior for concentration of ≤1000 ppm, however, Sigma solutions of higher concentrations reported slightly higher flow behavior than Kelzan. Similar rheogram behaviors are found for both Sigma and Kelzan emulsions up to concentration of 5,000 ppm. However, for 10,000 ppm, a slight higher profile for Sigma emulsions was reported.
| Original language | English |
|---|---|
| Pages (from-to) | 546-554 |
| Number of pages | 9 |
| Journal | Petroleum Science and Technology |
| Volume | 34 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Mar 18 2016 |
Keywords
- Crude oil
- emulsion
- shear rate
- shear strss
- xanthan gums
- yield stress
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
- Geotechnical Engineering and Engineering Geology