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Unlocking the Potential of Hydrophilic Nanoparticles as Novel Enhanced Oil Recovery Method: An Experimental Investigation

Hendraningrat, Luky
Doctoral thesis
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URI
http://hdl.handle.net/11250/2373540
Date
2015
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  • Institutt for geovitenskap og petroleum [1837]
Abstract
available inorganic nanoparticle candidates that are long time stable at a high

temperature and in a high-salinity water/oil environment, easily prepared in a

large-scale production with a relatively low cost, and environmentally friendly.

When exposed to fluid and injected into a reservoir, the interaction of

nanoparticles with their surroundings determines their transport behavior and

functionality. On a nanoscale, the interfacial properties between nanoparticles

and water/oil/rock have been characterized by a particle analyzer and in-situ

scanning electron microscope nanoindentation. The results link the nanoparticle

interaction and nanofluid rheology to the applied nanoparticle type, size,

concentration, and surface properties. Transportability is a pre-requisite for

nanoparticles to be useful in reservoir application, and particle retention has been

observed and measured. The stability of a nanofluid at high temperature has also

been solved using a stabilizer.

The overall investigations from this research show that hydrophilic

nanoparticles have great potential for EOR and offer benefits in challenging

reservoir conditions such as high salinity, different salt compositions, water

hardness, high temperature, different initial rock wettability, and low

permeability. The type and size of nanoparticles affects Nano-EOR performance.

It also observed that Nano-EOR performance could be maximized by optimizing

the nanofluid concentration and adding a stabilizer. By evaluating the contact

angle, pH, surface conductivity and interfacial tension as the proposed

displacement mechanisms in Nano-EOR, it was observed that wettability

alteration played a more dominant role.
Publisher
NTNU
Series
Doctoral thesis at NTNU;2015:202

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