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Effects of low-salinity water coupled with silica nanoparticles on wettability alteration of dolomite at reservoir temperature

Sadatshojaei, E ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1080/10916466.2016.1204316
  3. Publisher: Taylor and Francis Inc
  4. Abstract:
  5. Wettability alteration in porous media is one of the mechanisms for enhancing oil recovery through injecting low-salinity water into carbonate reservoirs, in which active ions can remove the carboxylic oil component from the rock surface, altering the rock's wettability toward a water-wet condition. This study investigated the concomitant effects of low-salinity water and hydrophilic SiO2 nanoparticles on oil-wet dolomite rock. Results revealed that low-salinity water coupled with hydrophilic nano-SiO2 in oil-wet dolomite rock remarkably affected the wettability alteration of the rock, showing that the simultaneous presence of ions in water and hydrophilic nano-SiO2 led to considerable wettability alteration compared with using just low-salinity water
  6. Keywords:
  7. Double layer ; Ions (SO4 2–, Mg2+, Ca2+) ; Nano-SiO2 ; Hydrophilicity ; Ions ; Nanoparticles ; Petroleum reservoirs ; Porous materials ; Rocks ; Carbonate reservoir ; Concomitant effects ; Low-salinity water ; Nano- SiO ; Reservoir temperatures ; Silica nanoparticles ; Wettability alteration ; Wetting
  8. Source: Petroleum Science and Technology ; Volume 34, Issue 15 , 2016 , Pages 1345-1351 ; 10916466 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/10916466.2016.1204316