Water-Based Enhanced Oil Recovery (EOR) by “Smart Water”: Optimal Ionic Composition for EOR in Carbonates

2011 ◽  
Vol 25 (11) ◽  
pp. 5173-5179 ◽  
Author(s):  
S. Jafar Fathi ◽  
T. Austad ◽  
S. Strand
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Ionic Composition ◽  
Smart Water ◽  
Water Based

scholarly journals Wettability alteration analysis of smart water/novel functionalized nanocomposites for enhanced oil recovery

2020 ◽  
Vol 17 (5) ◽  
pp. 1318-1328
Author(s):  
Sara Habibi ◽  
Arezou Jafari ◽  
Zahra Fakhroueian
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Ionic Composition ◽  
Water Flooding ◽  
Wettability Alteration ◽  
Core Flooding ◽  
Sulfate Ions ◽  
Smart Water ◽  
Eor Processes ◽  
Co Precipitation

Abstract Smart water flooding, as a popular method to change the wettability of carbonate rocks, is one of the interesting and challenging issues in reservoir engineering. In addition, the recent studies show that nanoparticles have a great potential for application in EOR processes. However, little research has been conducted on the use of smart water with nanoparticles in enhanced oil recovery. In this study, stability, contact angle and IFT measurements and multi-step core flooding tests were designed to investigate the effect of the ionic composition of smart water containing SO42− and Ca2+ ions in the presence of nanofluid on EOR processes. The amine/organosiloxane@Al2O3/SiO2 (AOAS) nanocomposite previously synthesized using co-precipitation-hydrothermal method has been used here. However, for the first time the application of this nanocomposite along with smart water has been studied in this research. Results show that by increasing the concentrations of calcium and sulfate ions in smart water, oil recovery is improved by 9% and 10%, respectively, compared to seawater. In addition, the use of smart water and nanofluids simultaneously is very effective on increasing oil recovery. Finally, the best performance was observed in smart water containing two times of sulfate ions concentration (SW2S) with nanofluids, showing increased efficiency of about 7.5%.

Novel smart water-based titania nanofluid for enhanced oil recovery

2019 ◽  
Vol 296 ◽  
pp. 112064 ◽  
Author(s):  
Mahsa Shirazi ◽  
Shahin Kord ◽  
Yousef Tamsilian
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Smart Water ◽  
Water Based

Use of Sulfate for Water Based Enhanced Oil Recovery during Spontaneous Imbibition in Chalk

2011 ◽  
Vol 25 (4) ◽  
pp. 1697-1706 ◽  
Author(s):  
M. A. Fernø ◽  
R. Grønsdal ◽  
J. Åsheim ◽  
A. Nyheim ◽  
M. Berge ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Spontaneous Imbibition ◽  
Water Based

scholarly journals Optimisation of Smart Water to Enhance Oil Recovery Efficiency in a Part of Oil Field of Upper Assam Basin, India

2019 ◽  
Vol 9 (2) ◽  
pp. 3620-3626
Keyword(s):  
Oil Recovery ◽  
Ionic Composition ◽  
Oil Field ◽  
Water Flooding ◽  
Rock Surface ◽  
Recovery Efficiency ◽  
Smart Water ◽  
Original Oil In Place ◽  
Brine Salinity ◽  
Secondary Mode

Researchers have proved the significance of water injection by tuning its composition and salinity into the reservoir during smart water flooding. Once the smart water invades through the pore spaces, it destabilises crude oil-brine-rock (COBR) that leads to change in wettability of the reservoir rocks. During hydrocarbon accumulation and migration, polar organic compounds were being adsorbed on the rock surface making the reservoir oil/mixed wet in nature. Upon invasion of smart water, due to detachment of polar compounds from the rock surfaces, the wettability changes from oil/mixed wet to water wet thus enhances the oil recovery efficiency. The objective of this paper is to find optimum salinity and ionic composition of the synthetic brines at which maximum oil recovery would be observed. Three core flood studies have been conducted in the laboratory to investigate the effect of pH, composition and salinity of the injected brine over oil recovery. Every time, flooding has been conducted at reservoir formation brine salinity i.e at 1400 ppm followed by different salinities. Here, tertiary mode of flooding has been carried out for two core samples while secondary flooding for one. Results showed maximum oil recovery by 40.12% of original oil in place (OOIP) at 1050ppm brine salinity at secondary mode of flooding. So, optimized smart water has been proposed with 03 major salts, KCl, MgCl2 and CaCl2 in secondary mode of flooding that showed maximum oil recovery in terms of original oil in place.

scholarly journals New insights into application of nanoparticles for water-based enhanced oil recovery in carbonate reservoirs

2019 ◽  
Vol 568 ◽  
pp. 164-172 ◽  
Author(s):  
Sina Rezaei Gomari ◽  
Yann Gorra Diallo Omar ◽  
Farida Amrouche ◽  
Meez Islam ◽  
Donglai Xu
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Carbonate Reservoirs ◽  
Water Based
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