Browsing UiS Brage by Author "Austad, Tor"
Now showing items 1-4 of 4
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Effect of water-extractable carboxylic acids in crude oil on wettability in carbonates
Fathi, Seyed Jafar; Austad, Tor; Strand, Skule (Journal article, 2011)The acidic components of the crude oil have a profound effect on the initial wetting conditions and possible wettability alteration by seawater in carbonates. In this work, three types of crude oils with different ... -
“Smart water” as a wettability modifier in chalk: The effect of salinity and ionic composition
Fathi, Seyed Jafar; Austad, Tor; Strand, Skule (Doctoral thesis; Journal article; Peer reviewed, 2010)Seawater can improve the water wetness of chalk at high temperatures, which improves the oil displacement by spontaneous imbibition of water. It is experimentally verified that the interaction between Ca2+, Mg2+, and SO42− ... -
Water-based enhanced oil recovery (EOR) by “Smart Water”: optimal ionic composition for EOR in carbonates
Fathi, Seyed Jafar; Austad, Tor; Strand, Skule (Journal article; Peer reviewed; Doctoral thesis, 2011)The composition of the injecting brine has a profound effect on the efficiency of water-based enhanced oil recovery (EOR) methods. Recently, we observed that not only is the concentration of the active ions Ca2+, Mg2+, ... -
Wettability alteration in carbonates: the effect of water-soluble carboxylic acids in crude oil
Fathi, Seyed Jafar; Austad, Tor; Strand, Skule; Puntervold, Tina (Journal article; Peer reviewed; Doctoral thesis, 2010)Acidic components in crude oil influence the wetting condition through their effect on electrostatic interactions with the mineral surfaces. In this paper, we have extracted water-soluble acids from a crude oil with a high ...