A novel binary flooding system of a biobased surfactant and hydrophobically associating polymer with ultralow interfacial tensions

Li, Na; Bao, Xinning; Guo, Yongjun; Yang, Shi‐Zhong; Li, Ying-Cheng; Mu, Bo‐Zhong

doi:10.1039/c8ra02901f

Cited by 15 publications

(11 citation statements)

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“…The combined binary surfactant mixture has a lower CMC value at a lesser amount of surfactants to achieve the same IFT and better salt tolerance, reducing its effective cost. 32 A lot of literature is present about the synergy between the two surfactants, but the study regarding their application in the field of EOR is limited. However, few authors have investigated the application of binary surfactant mixtures in the EOR process.…”

Section: Introductionmentioning

confidence: 99%

“…It is evident from the previous studies that synergy can exist between the cationic/anionic, anionic/nonionic, and cationic/nonionic binary surfactant mixtures, provided the right combination of the surfactants are selected with their proportionate mole fraction in their respective mixture. The combined binary surfactant mixture has a lower CMC value at a lesser amount of surfactants to achieve the same IFT and better salt tolerance, reducing its effective cost …”

Section: Introductionmentioning

confidence: 99%

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Anionic/Nonionic Surfactant Mixture for Enhanced Oil Recovery through the Investigation of Adsorption, Interfacial, Rheological, and Rock Wetting Characteristics

et al. 2021

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Surfactant adsorption is a major problem encountered with the surfactant polymer flooding. A lot of additives have been used in this regard to tackle this problem. In the present study, a mixture of a nonionic and an anionic surfactant was used to investigate its effect on the various aspects of the surfactant polymer flooding. The effect of temperature and the nonionic surfactant concentration on the critical micelle concentration of the anionic surfactant was explored. The adsorption behavior of the surfactant mixture on the sand particles was explored by comparing the initial and final concentrations of the surfactant mixture. The adsorption data were fitted in the different adsorption isotherms (Langmuir, Freundlich, and Temkin). The interfacial property and the rock wetting characteristics of the surfactant mixture were investigated by measuring the surface tension and contact angle, respectively. Next, the viscosity of the chemical slug (surfactant and polymer) was analyzed at different temperatures. The viscosity results were fitted in the power law model to understand the fluid flow behavior. Finally, the sand pack flooding experiments were performed using the chemical slug composed of a surfactant mixture and an industrial-grade polymer. In all the experiments, the binary surfactant mixture outperforms the individual surfactants and efficiently reduced the surfactant adsorption by 63%. Also, the binary surfactant mixture achieved an ultralow interfacial tension value of 0.0097 mN/m. The chemical slug composed of the binary surfactant and polymer was able to recover up to 76% of the total oil.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anionic/Nonionic Surfactant Mixture for Enhanced Oil Recovery through the Investigation of Adsorption, Interfacial, Rheological, and Rock Wetting Characteristics

et al. 2021

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“…The results indicate that this binary system could maintain favorable interface performance in a wide range of salinities with an excellent salt tolerance, which has a good application prospect in most oilfields. 37 Effect of Temperature on IFT of the SP System. Figure 6 shows that the IFT of the binary system appeared to have an upward trend but still reached an ultralow value as the temperature rose from 45 to 80 °C.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Rheological Properties of a New Microbial Exopolysaccharide Produced by Sphingomonas sp. HS and Its Potential in Enhanced Oil Recovery

Miao

Zhou

et al. 2022

Energy Fuels

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The alkali-free surfactant−polymer flooding system with ultralow interfacial tensions is still a challenge to enhance oil recovery at present. In this study, a new thermally stable and salt tolerant biopolymer (HS-EPS) was obtained from thje broth of Sphingomonas sp. HS, a newly isolated strain (CGMCC No. 22954). Compared to HPAM, the elasticity of HS-EPS was dominant which is conducive to enhancing oil recovery. The HS-EPS showed good viscosity stability at salinities up to 360 g/L of NaCl, 60 g/L of Ca 2+ , and 60 g/L of Mg 2+ , temperatures up to 90 °C, and pH 4−10. Meanwhile, a new alkali-free surfactant−polymer binary system was developed using HS-EPS and a biobased surfactant newly synthesized in our laboratory. The interfacial tension between this binary flooding system and Daqing crude oil was below 10 −2 mN/m with 100 g/L of NaCl, 400 mg/L of Ca 2+ , or at a temperature of 80 °C. In addition, this binary system possesses a good oil sand adsorption resistance, dilution resistance, and aging stability. These results demonstrate that the new biopolymer HS-EPS secreted by Sphingomonas sp. HS is promising in oil recovery in the alkali-free flooding system.

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“…Finally, the interfacial tension between the crude oil and each diluted surfactant solution was measured. 26 …”

Section: Methodsmentioning

confidence: 99%

Highly Ca²⁺-Ion-Tolerant Biobased Zwitterionic Surfactant with High Interfacial Activity

et al. 2022

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The wide application of surfactants has a harmful effect on the environment, drawing more attention to the development and application of low-toxicity surfactants. A salt-tolerant and low-toxicity biobased zwitterionic surfactant, N , N -dimethyl- N -[2-hydroxy-3-sulfo-propyl]- N -benzyloxyoctadecanoyl-1,3-propanediamine (SPBOPA), was prepared from the oleic acid extracted from waste oils and anise ether extracted from the tarragon. The final surfactant structure was confirmed using gas chromatography–mass spectrometry (GC–MS), liquid chromatography–mass spectrometry (LC–MS), and 1 H nuclear magnetic resonance (NMR) spectroscopy. The SPBOPA surfactant could reduce the interfacial tension between crude oil and formation brine to ultralow (5.2 × 10 –4 mN/m) at a low dosage without extra alkali. It still had good interfacial properties in NaCl up to 60 g/L, Ca 2+ up to 2000 mg/L, and temperature up to 100 °C. Furthermore, SPBOPA had strong antidilution and antiadsorption properties with low toxicity as demonstrated by the high LD 50 value of >5000 mg/kg·BW. It could also enhance the wetting ability of crude oil surfaces. Meanwhile, it showed a high biodegradability in the environment. All of the results achieved in this work confirmed that the SPBOPA surfactant is a more robust and promising biobased surfactant candidate than traditional surfactants as an eco-friendly surfactant for enhanced oil recovery (EOR).

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A novel binary flooding system of a biobased surfactant and hydrophobically associating polymer with ultralow interfacial tensions

Abstract: A novel alkali free binary flooding system of a biobased zwitterionic surfactant and hydrophobically associating polymer with ultralow interfacial tension at a low surfactant dosage was studied in this paper.

Cited by 15 publications

References 35 publications

Anionic/Nonionic Surfactant Mixture for Enhanced Oil Recovery through the Investigation of Adsorption, Interfacial, Rheological, and Rock Wetting Characteristics

Anionic/Nonionic Surfactant Mixture for Enhanced Oil Recovery through the Investigation of Adsorption, Interfacial, Rheological, and Rock Wetting Characteristics

Rheological Properties of a New Microbial Exopolysaccharide Produced by Sphingomonas sp. HS and Its Potential in Enhanced Oil Recovery

Highly Ca²⁺-Ion-Tolerant Biobased Zwitterionic Surfactant with High Interfacial Activity

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A novel binary flooding system of a biobased surfactant and hydrophobically associating polymer with ultralow interfacial tensions

Abstract: A novel alkali free binary flooding system of a biobased zwitterionic surfactant and hydrophobically associating polymer with ultralow interfacial tension at a low surfactant dosage was studied in this paper.

Cited by 15 publications

References 35 publications

Anionic/Nonionic Surfactant Mixture for Enhanced Oil Recovery through the Investigation of Adsorption, Interfacial, Rheological, and Rock Wetting Characteristics

Anionic/Nonionic Surfactant Mixture for Enhanced Oil Recovery through the Investigation of Adsorption, Interfacial, Rheological, and Rock Wetting Characteristics

Rheological Properties of a New Microbial Exopolysaccharide Produced by Sphingomonas sp. HS and Its Potential in Enhanced Oil Recovery

Highly Ca2+-Ion-Tolerant Biobased Zwitterionic Surfactant with High Interfacial Activity

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Highly Ca²⁺-Ion-Tolerant Biobased Zwitterionic Surfactant with High Interfacial Activity