Abstract
This work describes proprietary surfactant-based viscosifying fluids for Chemical EOR applications. The viscosity is induced by wormlike micelles formed by self-assembled surfactants. Prior to a deeper analysis of fluid flow profile, the viscosity of the fluid has been screened using a millifluidic set-up developed at Rhodia LOF. Viscosity measurements, at low surfactant concentrations (0.1% to 0.5 % w/w), have been recorded in a wide range of reservoir conditions (including formation brine with up to 200 g/L TDS). Data show that the system is salt tolerant with a positive impact of brine concentration on the viscosity. Thermal stability of viscosifying surfactants perfomed in anaerobic conditions show excellent stability even in hard brine. A miniaturized core flood test developed at Rhodia LOF has been used to measure fluid propagation as well as adsorption in single-phase conditions in representative porous material (Clashach sandstone). An excellent correlation has been found between bulk viscosity and rheology in porous media. Core-flood experiments have been performed on a specific reservoir case, showing the ability of viscosifying surfactant to displace residual oil. Simulations of viscosifying surfactants performance versus waterflood and polymer flood have been performed to extrapolate recovry factors in a 5 spot pattern.
| Original language | English |
|---|---|
| Title of host publication | 16th European Symposium on Improved Oil Recovery 2011 |
| Pages | 463-477 |
| Number of pages | 15 |
| Publication status | Published - 2011 |
| Event | 16th European Symposium on Improved Oil Recovery 2011 - Cambridge, United Kingdom Duration: Apr 12 2011 → Apr 14 2011 |
Other
| Other | 16th European Symposium on Improved Oil Recovery 2011 |
|---|---|
| Country | United Kingdom |
| City | Cambridge |
| Period | 4/12/11 → 4/14/11 |
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ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
Cite this
Viscosifying surfactants for chemical EOR. / Degré, G.; Morvan, M.; Bouillot, J.; Zaitoun, A.; Al-Maamari, R. S.; Al-Hashmi, A. R.; Al-Sharji, H. H.
16th European Symposium on Improved Oil Recovery 2011. 2011. p. 463-477.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Viscosifying surfactants for chemical EOR
AU - Degré, G.
AU - Morvan, M.
AU - Bouillot, J.
AU - Zaitoun, A.
AU - Al-Maamari, R. S.
AU - Al-Hashmi, A. R.
AU - Al-Sharji, H. H.
PY - 2011
Y1 - 2011
N2 - This work describes proprietary surfactant-based viscosifying fluids for Chemical EOR applications. The viscosity is induced by wormlike micelles formed by self-assembled surfactants. Prior to a deeper analysis of fluid flow profile, the viscosity of the fluid has been screened using a millifluidic set-up developed at Rhodia LOF. Viscosity measurements, at low surfactant concentrations (0.1% to 0.5 % w/w), have been recorded in a wide range of reservoir conditions (including formation brine with up to 200 g/L TDS). Data show that the system is salt tolerant with a positive impact of brine concentration on the viscosity. Thermal stability of viscosifying surfactants perfomed in anaerobic conditions show excellent stability even in hard brine. A miniaturized core flood test developed at Rhodia LOF has been used to measure fluid propagation as well as adsorption in single-phase conditions in representative porous material (Clashach sandstone). An excellent correlation has been found between bulk viscosity and rheology in porous media. Core-flood experiments have been performed on a specific reservoir case, showing the ability of viscosifying surfactant to displace residual oil. Simulations of viscosifying surfactants performance versus waterflood and polymer flood have been performed to extrapolate recovry factors in a 5 spot pattern.
AB - This work describes proprietary surfactant-based viscosifying fluids for Chemical EOR applications. The viscosity is induced by wormlike micelles formed by self-assembled surfactants. Prior to a deeper analysis of fluid flow profile, the viscosity of the fluid has been screened using a millifluidic set-up developed at Rhodia LOF. Viscosity measurements, at low surfactant concentrations (0.1% to 0.5 % w/w), have been recorded in a wide range of reservoir conditions (including formation brine with up to 200 g/L TDS). Data show that the system is salt tolerant with a positive impact of brine concentration on the viscosity. Thermal stability of viscosifying surfactants perfomed in anaerobic conditions show excellent stability even in hard brine. A miniaturized core flood test developed at Rhodia LOF has been used to measure fluid propagation as well as adsorption in single-phase conditions in representative porous material (Clashach sandstone). An excellent correlation has been found between bulk viscosity and rheology in porous media. Core-flood experiments have been performed on a specific reservoir case, showing the ability of viscosifying surfactant to displace residual oil. Simulations of viscosifying surfactants performance versus waterflood and polymer flood have been performed to extrapolate recovry factors in a 5 spot pattern.
UR - http://www.scopus.com/inward/record.url?scp=84877984453&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84877984453&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9781622768929
SP - 463
EP - 477
BT - 16th European Symposium on Improved Oil Recovery 2011
ER -