Effect of Nanofluid Treatment on Water Sensitive Formation to Investigate Water Shock Phenomenon, An Experimental Study

Permeability reduction in porous media as a result of frail and tenuous fine particles migration would decrease the productivity index in the subterranean reservoirs. During reservoir stimulation by injecting fluids into the reservoir, as the salinity condition of the formation brine changes, fine p...

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Bibliographic Details
Published in:Journal of dispersion science and technology 2014-07, Vol.35 (7), p.889-897
Main Authors: Habibi, Ali, Heidari, Mohammad A., Al-Hadrami, Hamoud, Al-Ajmi, Adel, Al-Wahaibi, Yahya, Ayatollahi, Shahab
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Dispersions
DLVO theory
Exact sciences and technology
Fines & penalties
fines migration
Fixation
formation damage
Foundry sands
General and physical chemistry
nanofluid injection
nanofluid stability
Nanofluids
Nanostructure
Permeability
Reduction
Reservoirs
Scanning electron microscopy
Walls
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Summary:Permeability reduction in porous media as a result of frail and tenuous fine particles migration would decrease the productivity index in the subterranean reservoirs. During reservoir stimulation by injecting fluids into the reservoir, as the salinity condition of the formation brine changes, fine particles initiate the triggering process. In this study, MgO-based nanofluid as a fines fixation agent was stably prepared based on the particle size distribution and characterized through transmission electron microscopy analysis. Afterward, several core flooding tests were performed using Berea sandstone cores to study the effect of nanofluid injection on fines fixation in the water shock phenomenon. Permeability reduction occurred up to 95% of inchoate permeability for no treatment case, which was also confirmed by scanning electron microscopy analysis. Finally, MgO nanofluid with 0.03 wt% concentration and 120 minutes soaking time in the core mitigated the fine particles release and fixed them on the pore walls' surfaces critically reducing the formation damage. The analysis shows that outweighing the attraction potentials compared to repulsions was the main mechanism after nanofluids treatment.
ISSN:0193-2691
1532-2351
DOI:10.1080/01932691.2013.775586