Improving performances of double-chain single-head surfactants for SP flooding by combining with conventional anionic surfactants

Yan, Li-min; Cui, Zhenggang; Song, Binglei; Pei, Xiaomei; Jiang, Jianzhong

doi:10.1080/01932691.2017.1300910

Cited by 11 publications

(22 citation statements)

References 38 publications

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“…Moreover, with the addition of AOS, the mole fraction of nonionics decreased, as expected. 24 As shown in our previous article, 24 the addition of AOS to formulations can improve the solubility and stability of the formulation. 24,36,37 Comparatively, aqueous solutions of binary mixtures containing C m GA−E n seem to be more stable than those containing 1,3-dialkyl glyceryl ether ethoxylates, especially in the ternary systems, where sedimentation or flocculation does not appear even at room temperature (ca.…”

Section: Energy and Fuelsmentioning

confidence: 81%

“…The temperature of the onset of turbidity was taken as the cloud point, which was usually reproducible to within ± 0.5 °C. 24,36,37 Interfacial Tension. The dynamic interfacial tensions (IFTs) between aqueous solutions of surfactants with polyacrylamide (1000 mg/L) in Daqing connate water and Daqing crude oil were measured using a Texas 500 model tensiometer at a rotation period of 14 ms/ rotation (4286 rpm) at 45 ± 0.1 °C (the reservoir temperature of the Daqing oilfield), and the value at 120 min was taken as the equilibrium IFT.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The temperature was kept at 45 ± 0.5 °C using an air-therm heater (Air-Therm-ATX, World Precision Instruments, Sarasota, FL) during measurements. 20,23,24,38 Emulsification of Daqing Crude Oil. For emulsification experiments, 6.7 mL of crude oil was added to 10 mL of an aqueous solution of a surfactant formulation at 5 mM in Daqing connate water containing 1000 mg/L PAM.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Performances of Guerbet Alcohol Ethoxylates for Surfactant–Polymer Flooding Free of Alkali

Yan

Cui

et al. 2017

Energy Fuels

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Two series of double-chain single-head nonionic surfactants, Guerbet alcohol ethoxylates (C m GA–E n ; m = 16 and 20, n = 5.7–24.0), were synthesized, and their performances as surfactants for surfactant–polymer (SP) flooding free of alkali were evaluated. The products have relatively low critical micelle concentrations [(6.8 × 10–7)–(1.0 × 10–5 mol/L)] and a wide range of surface tensions at the critical micelle concentration (γcmc) values (30.3–38.0 mN/m) at 25 °C, depending on both the alkyl-chain length and the number of ethylene oxide (EO) units. When used alone, these nonionic surfactants are not efficient for reducing crude oil/connate water interfacial tension (IFT), but their binary mixtures with a highly hydrophobic zwitterionic surfactant, didodecylmethyl hydroxylpropyl sulfobetaine (diC12HSB), are very efficient in reducing Daqing crude oil/connate water IFTs. Ultralow IFTs can be achieved in a wide total concentration range (0.3–10 mM) at 45 °C, and the low limit (0.3 mM) can be further reduced to 0.15 mM by adding an anionic surfactant, α-olefin sulfonate (AOS), to the binary mixtures at a small mole fraction (0.1). Both the binary and ternary mixtures display good resistance against adsorption by Daqing sandstone, and when dissolved in connate water, they prefer to keep the negatively charged rock surface water-wet and produce a crude-oil-in-water emulsion. In addition, the incorporation of AOS into the binary mixtures was found to be beneficial for preventing crystallization of zwitterionic surfactant and flocculation of nonionic surfactants, as reported previously. Comparatively, for SP flooding free of alkali, the Guerbet alcohol ethoxylates are as excellent as the glyceryl ether ethoxylates, nonionic surfactants with a similar double-alkyl single-head structure, but are far superior to the conventional nonionic surfactants with monoalkyl single-head structures.

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Section: Energy and Fuelsmentioning

confidence: 81%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

See 1 more Smart Citation

Performances of Guerbet Alcohol Ethoxylates for Surfactant–Polymer Flooding Free of Alkali

Yan

Cui

et al. 2017

Energy Fuels

Self Cite

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“…Commercial AOS with an average molar mass of 313 g mol −1 were supplied by SinoLight Chemical Co. Ltd., China, which are a concentrated aqueous solution with a surface‐active matter content of 33.9% (Yan et al, ). C m HSB with a purity of ≥98% were synthesized and purified in our laboratory using the corresponding tertiary amines (≥98%) supplied by Solvay (Zhangjiagang) Specialty Chemicals Co. Ltd. (Shi et al, ).…”

Section: Methodsmentioning

confidence: 99%

A New Series of Double‐Chain Single‐Head Sulfobetaine Surfactants Derived from 1,3‐Dialkyl Glyceryl Ether for Reducing Crude Oil/Water Interfacial Tension

Yan

Cui

et al. 2018

J Surfact & Detergents

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A new series of sulfobetaine surfactants with double‐chain single‐head structure were derived from 1,3‐dialkyl glyceryl ethers and their performances in reducing Daqing crude oil/connate water interfacial tension (IFT) in the absence of alkali were studied. With a large hydrophilic head group and double hydrophobic chains, these surfactants are efficient at reducing crude oil/connate water IFT. Those with didecyl and dioctyl are good hydrophobic surfactants that can reduce Daqing crude oil/connate water to ultra‐low IFT by mixing with a small molar fraction of various conventional single‐chain hydrophilic surfactants, such as α‐olefin sulfonates, dodecyl polyoxyethylene (10) ether, and cetyl dimethyl hydroxypropyl sulfobetaine. The asymmetric double‐chain sulfobetaine derived from 1‐decyl‐3‐hexyl glyceryl ether can reduce Daqing crude oil/connate water IFT to ultra‐low solely over a wide concentration range (0.03–10 mM or 0.0017–0.58 wt.%), which allows for use of an individual surfactant instead of mixed surfactants to avoid chromatographic separation in the reservoir. In addition, formulations rich in sulfobetaine surfactants show low adsorption on sandstone, keeping the negatively charged solid surface water‐wet, and forming crude oil‐in‐water emulsions. These new sulfobetaine surfactants are, therefore, good candidates for surfactant‐polymer flooding free of alkali.

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“…The formation of a stable emulsion, ultra-low interfacial tension in the range of 10 −3 -10 −4 mN/m, and the alteration of the sandstone wettability toward the hydrophilicity are of the results they found (Yan et al 2017). Somewhere else, they improved the results with the binary combination of these surfactants (Yan et al 2018). Kumar et al examined the ability of cationic surfactants from the C n TAB family to reduce interfacial tension and wettability.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the performances of commercial surfactants in reducing interfacial tension and wettability alteration in the process of chemical water injection into carbonate reservoirs

Najimi

Nowrouzi

Manshad

et al. 2019

J Petrol Explor Prod Technol

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Surfactants are used in the process of chemical water injection to reduce interfacial tension of water and oil and consequently decrease the capillary pressure in the reservoir. However, other mechanisms such as altering the wettability of the reservoir rock, creating foam and forming a stable emulsion are also other mechanisms of the surfactants flooding. In this study, the effects of three commercially available surfactants, namely AN-120, NX-1510 and TR-880, in different concentrations on interfacial tension of water and oil, the wettability of the reservoir rock and, ultimately, the increase in oil recovery based on pendant drop experiments, contact angle and carbonate core flooding have been investigated. The effects of concentration, temperature, pressure and salinity on the performances of these surfactants have also been shown. The results, in addition to confirming the capability of the surfactants to reduce interfacial tension and altering the wettability to hydrophilicity, show that the TR-880 has the better ability to reduce interfacial tension than AN-120 and NX-1510, and in the alteration of wettability the smallest contact angle was obtained by dissolving 1000 ppm of surfactant NX-1510. Also, the results of interfacial tension tests confirm the better performances of these surfactants in formation salinity and high salinity. Additionally, a total of 72% recovery was achieved with a secondary saline water flooding and flooding with a 1000 ppm of TR-880 surfactant.

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Improving performances of double-chain single-head surfactants for SP flooding by combining with conventional anionic surfactants

Cited by 11 publications

References 38 publications

Performances of Guerbet Alcohol Ethoxylates for Surfactant–Polymer Flooding Free of Alkali

Performances of Guerbet Alcohol Ethoxylates for Surfactant–Polymer Flooding Free of Alkali

A New Series of Double‐Chain Single‐Head Sulfobetaine Surfactants Derived from 1,3‐Dialkyl Glyceryl Ether for Reducing Crude Oil/Water Interfacial Tension

Experimental study of the performances of commercial surfactants in reducing interfacial tension and wettability alteration in the process of chemical water injection into carbonate reservoirs

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