Papers by Elchin F . Veliyev
Nanofluid for enhanced oil recovery, 2011
An experimental study of nanofluids intended for enhanced oil recovery is presented in this work.... more An experimental study of nanofluids intended for enhanced oil recovery is presented in this work. An aqueous solution of anionic surface-active agents with addition of light non-ferrous metal nanoparticles was used as the focus of the study. It is shown that the use of the nanofluid permitted a 70–90% reduction of surfacetension on an oil boundary in comparison with surface-active agent aqueous solution and is characterized by ashift in dilution. Use the developed nano-suspension results in a considerably increase EOR
Comparative Analysis of the EOR Mechanisms by Using Low Salinity and Low Hardness Alkaline Water, 2017
This paper discusses the application of low hardness alkali water compositions (LHAW) as a
second... more This paper discusses the application of low hardness alkali water compositions (LHAW) as a
secondary and tertiary displacement agent for EOR. A comparative analysis of the impact of low
salinity water (LSW) and LHAW water on interfacial tension, contact angle on rock, adsorption
of ions, emulsion stability and clay swelling is presented. LHAW application contributes to the
formation of stable water in oil (w/o) emulsions and a decrease in clay swelling compared to
LSW. Adsorption values for both fluids are similar. Contact angle measurements show that both
LSW and LHAW reduce interfacial tension compared to Synthetic Caspian Sea water (SCSW),
by up to 17% and 94% respectively. Similar results were observed for contact angle
measurements. Flooding experiments were conducted in secondary and tertiary modes. In
secondary flooding the two water compositions LHAW-2 and LHAW-1 increased the oil
recovery (%OOIP) in comparison with SCSW at water breakthrough, by 29% and 25%
respectively . The final oil recovery increases were 21% and 15% respectively. In tertiary
flooding, tests showed that LHAW-2 and LHAW-1 oil recoveries (%OOIP) compared to LSW
were 13 % and 10% respectively. The oil recovery rate for LHAW solutions was not linear
versus lnt as was that for LSW. This was proposed as a consequence of emulsions generation
while water-cut is below 50% however, above 50% water cut the rate stabilizes.
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Papers by Elchin F . Veliyev
secondary and tertiary displacement agent for EOR. A comparative analysis of the impact of low
salinity water (LSW) and LHAW water on interfacial tension, contact angle on rock, adsorption
of ions, emulsion stability and clay swelling is presented. LHAW application contributes to the
formation of stable water in oil (w/o) emulsions and a decrease in clay swelling compared to
LSW. Adsorption values for both fluids are similar. Contact angle measurements show that both
LSW and LHAW reduce interfacial tension compared to Synthetic Caspian Sea water (SCSW),
by up to 17% and 94% respectively. Similar results were observed for contact angle
measurements. Flooding experiments were conducted in secondary and tertiary modes. In
secondary flooding the two water compositions LHAW-2 and LHAW-1 increased the oil
recovery (%OOIP) in comparison with SCSW at water breakthrough, by 29% and 25%
respectively . The final oil recovery increases were 21% and 15% respectively. In tertiary
flooding, tests showed that LHAW-2 and LHAW-1 oil recoveries (%OOIP) compared to LSW
were 13 % and 10% respectively. The oil recovery rate for LHAW solutions was not linear
versus lnt as was that for LSW. This was proposed as a consequence of emulsions generation
while water-cut is below 50% however, above 50% water cut the rate stabilizes.
secondary and tertiary displacement agent for EOR. A comparative analysis of the impact of low
salinity water (LSW) and LHAW water on interfacial tension, contact angle on rock, adsorption
of ions, emulsion stability and clay swelling is presented. LHAW application contributes to the
formation of stable water in oil (w/o) emulsions and a decrease in clay swelling compared to
LSW. Adsorption values for both fluids are similar. Contact angle measurements show that both
LSW and LHAW reduce interfacial tension compared to Synthetic Caspian Sea water (SCSW),
by up to 17% and 94% respectively. Similar results were observed for contact angle
measurements. Flooding experiments were conducted in secondary and tertiary modes. In
secondary flooding the two water compositions LHAW-2 and LHAW-1 increased the oil
recovery (%OOIP) in comparison with SCSW at water breakthrough, by 29% and 25%
respectively . The final oil recovery increases were 21% and 15% respectively. In tertiary
flooding, tests showed that LHAW-2 and LHAW-1 oil recoveries (%OOIP) compared to LSW
were 13 % and 10% respectively. The oil recovery rate for LHAW solutions was not linear
versus lnt as was that for LSW. This was proposed as a consequence of emulsions generation
while water-cut is below 50% however, above 50% water cut the rate stabilizes.