Improvement of the Selection Method of Surfactants and Their Mixtures for Chemical Enhanced Oil Recovery

Kothencz, Réka; Nagy, Roland; Bartha, L.; Vágó, Árpád

doi:10.1080/00986445.2016.1277518

Cited by 9 publications

(5 citation statements)

References 17 publications

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“…In CEOR applications, polymers significantly improve sweep efficiency and mobility control. , Nevertheless, the rheological characteristics of the polymer solutions are significantly affected by the specific reservoir conditions, namely, formation temperature and shear rates. , For significant sweep efficiency, it is essential to have better stability of the nanofluid–polymer suspension in a saline environment . We thus conducted a zeta potential analysis of the nanofluid formulation at a constant salinity of 0.05 wt % without NaAlg (Figure ).…”

Section: Resultsmentioning

confidence: 99%

Physicochemical Characterization of Zirconia Nanoparticle-Based Sodium Alginate Polymer Suspension for Enhanced Oil Recovery

et al. 2021

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Biopolymers have been employed in enhanced oil recovery (EOR) due to their high viscosity and significant effects on waterflooding performance. Sodium alginate (NaAlg) is an excellent biopolymer that is extracted primarily from brown algae. It has been used in the biotechnology industry as a thickening agent, colloidal stabilizer, and oil recovery application. In the present study, a series of sodium alginate/zirconium oxide nanoparticle suspensions were prepared via solution mixing, and the effect of nanoparticle content, polymer concentration, temperature, salinity was investigated on the rheological behavior using a concentric cylinder dynamic rheometer. The rheology results revealed that the lower concentration of sodium alginates (0.01 to 0.06 wt %) and sodium alginate/nanoparticle suspensions (0.02 to 0.06 wt %) displayed shear thinning behavior for the whole range of shear rate from 0.1 to 100 s–1. It was noticed that the aging of the polymer/nanoparticle suspension at 25 °C for 7 days did not significantly affect the rheological characteristics. It was moreover observed that enhancing salinity from 0.015 to 0.1 wt % in the 0.04 wt % ZrO2 nanoparticle suspension comprising 0.1 wt % sodium alginate showed a progressive decrease in viscosity under the temperature range from 25 to 50 °C. The proposed sodium alginate/zirconium oxide nanoparticles from the mentioned results indicate their potential for enhanced oil recovery applications.

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Section: Resultsmentioning

confidence: 99%

Physicochemical Characterization of Zirconia Nanoparticle-Based Sodium Alginate Polymer Suspension for Enhanced Oil Recovery

et al. 2021

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“…These reserves are considered vital to secure the supply of rising fuels and by-products demand [2,3]. As reservoir pressure declines, one method of Enhanced Oil Recovery (EOR) involves injecting water or other fluids into the field to help bring crude oil to the surface [4][5][6]. In the simplest case, the Enhanced Oil Recovery (EOR) process serves as a tertiary method employed after primary and secondary recovery stages.…”

Section: Introductionmentioning

confidence: 99%

Maximizing enhanced oil recovery via oxidative cracking of crude oil: employing air injection and H₂O₂ with response surface methodology optimization

Nouari,

Hammadou née Mesdour,

Hamada

2024

Eng. Res. Express

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The utilization of air injection as a method to enhance oil recovery in oil fields has gained prominence due to its cost-effectiveness and widespread availability, particularly in heavy oil production. This study focuses on optimizing the oxidative cracking process of Algerian crude oil by employing air injection supplemented with H2O2 and analyzing the interaction of key operating parameters like temperature and catalyst amount using response surface methodology. The predicted values derived from the response functions closely aligned with experimental data, demonstrating high accuracy (R2 = 0.9727 for liquid oil, R² = 0.9176 for residue, and R² = 0.7399 for gas phases). Using the developed second-order model, optimal conditions were determined through contour and surface plots, as well as regression equation analysis using Design software. At these optimal parameters (14.78 wt. % of H2O2, 2 L/min of air flow, 100 mL of crude oil at 354.05 °C for 40 minutes), the oxidative cracking process yielded 96.32 % liquid oil, 3.018 % residue, and 0.662 % gas products. Notably, the experimental produced liquid oil constituted 96.07 vol. %, matching well with the optimization outcomes. Physicochemical analysis of liquid product phase obtained from oxidative cracking process of petroleum confirmed the prevalence of light aliphatic compounds (C2-C11) at 70.59 %, alongside 29.41 % of C12-C36. The process also resulted in reduced viscosity, density, refractive index, and sulfur content in the liquid phase. The combination of air injection and H2O2 showcases promise in recovering residual oil effectively and contributes to the ongoing advancements in EOR techniques.

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“…25 Kothenczet et al developed a new evaluation method with a more accurate relationship with additional oil yield. 26 The equivalent alkane carbon number (EACN) was introduced to characterize crude oil, which corresponds to carbon atom's number of linear alkane equivalent to the given oil. 27 The optimum parameters, such as solubilization ratio and salinity, are a function of the EACN for a pure alkane/surfactant system.…”

Section: Introductionmentioning

confidence: 99%

“…Torrealba and Johns proposed a model that could predict two- and three-phase IFTs and phase behavior for changes in composition and hydrophilic–lipophilic deviation . Kothenczet et al developed a new evaluation method with a more accurate relationship with additional oil yield . The equivalent alkane carbon number (EACN) was introduced to characterize crude oil, which corresponds to carbon atom’s number of linear alkane equivalent to the given oil .…”

Section: Introductionmentioning

confidence: 99%

Selection of Optimum Surfactant Formulations with Ultralow Interfacial Tension for Improving the Oil Washing Efficiency

et al. 2021

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Ultralow oil−water interfacial tension (IFT) has provided an important basis for screening optimum surfactant formulation for improving the oil washing efficiency. Thus, it is of great significance to further investigate the selection method for surfactant systems with ultralow IFT. In this study, a selection of surfactant systems with ultralow IFT was simplified by a method of comparing the equivalent alkane carbon number (EACN) of crude oil with the minimum alkane carbon number (n min ) of surfactant mixtures. The results show that the ultralow IFT can be achieved when the n min of optimum surfactant formulation is equal to the EACN of crude oil. Meanwhile, the oil washing efficiency experiments show that the oil washing efficiency increases with the decrease of IFT, and the optimum surfactant formulation with ultralow IFT has the highest oil washing efficiency. This study provides a more efficient way for selecting optimum surfactant formulation systems with ultralow IFT for improving the oil washing efficiency.

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Improvement of the Selection Method of Surfactants and Their Mixtures for Chemical Enhanced Oil Recovery

Cited by 9 publications

References 17 publications

Physicochemical Characterization of Zirconia Nanoparticle-Based Sodium Alginate Polymer Suspension for Enhanced Oil Recovery

Physicochemical Characterization of Zirconia Nanoparticle-Based Sodium Alginate Polymer Suspension for Enhanced Oil Recovery

Maximizing enhanced oil recovery via oxidative cracking of crude oil: employing air injection and H₂O₂ with response surface methodology optimization

Selection of Optimum Surfactant Formulations with Ultralow Interfacial Tension for Improving the Oil Washing Efficiency

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Improvement of the Selection Method of Surfactants and Their Mixtures for Chemical Enhanced Oil Recovery

Cited by 9 publications

References 17 publications

Physicochemical Characterization of Zirconia Nanoparticle-Based Sodium Alginate Polymer Suspension for Enhanced Oil Recovery

Physicochemical Characterization of Zirconia Nanoparticle-Based Sodium Alginate Polymer Suspension for Enhanced Oil Recovery

Maximizing enhanced oil recovery via oxidative cracking of crude oil: employing air injection and H2O2 with response surface methodology optimization

Selection of Optimum Surfactant Formulations with Ultralow Interfacial Tension for Improving the Oil Washing Efficiency

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Maximizing enhanced oil recovery via oxidative cracking of crude oil: employing air injection and H₂O₂ with response surface methodology optimization