Study on Interface Behaviour of the Weak Alkali Ternary System

Interfacial tensions between the weak alkali ternary system with surfactant SHSA-HN6 and Henan crude oil were measured. The effects of adding Na2CO3 and Na2CO3 concentration, SHSA-HN6 and polymer concentration on interfacial tensions were examined. The results showed that the interfacial tension reduction effect of the weak alkali ternary system was better than that of the alkali-free binary system, and the ultra-low interfacial tension （10-3 mN/m order of magnitude）for weak alkali ternary system could be reached more rapidly; the influence of polymer concentration changes on static interfacial tension of the weak alkali ternary system was small and the higher the polymer concentration was，the longer the time to reach ultra-low interfacial tension was; the interfacial tension can still be ultra-low when concentration of every component was reduced simultaneously in the weak alkali ternary system; adding Na2CO3 not only can reduce the interfacial tension and but also plays a role of sacrificial agent.

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The Reaserch of Displacement Oil of the Polymer System with the Low Interfacial Tension Conditions

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.535-537.1163 ◽

2012 ◽

Vol 535-537 ◽

pp. 1163-1166 ◽

Cited By ~ 1

Author(s):

Wen Guo Ma ◽

Quan Guo ◽

Dan Li ◽

Ren Qiang Liu ◽

Hui Fen Xia

Keyword(s):

Interfacial Tension ◽

Polymer Solution ◽

Mass Concentration ◽

Polymer System ◽

Polymer Flooding ◽

Water Flooding ◽

Displacement Efficiency ◽

Order Of Magnitude ◽

Low Interfacial Tension ◽

Concentration Changes

The polymer system in low interfacial tension conditions is a important technology in oilfield production. Through the Using both rheometer(HAAKE RS150) and interface tension instrument(TS500), the effect of interfacial tension character and viscosity caused by the changing of polymer mass concentration is studied in 30 degrees celsius condition. The man-made core displacement oil experiments and visual model displacement oil experiments were carried out, the displacement efficiency of polymer solution with low interfacial tension after water flooding or polymer flooding was analyzed. The results indicate that the interfacial tension between polymer system with low interfacial tension and oil first reduced, then increased with the increasing of polymer mass concentration, when the polymer mass concentration changes form 0.5gram/Litre to 1.5gram/Litre, the interfacial tension is 10-3 milli-Newton/meter order of magnitude, when the polymer mass concentration increased to 2.0gram/Litre, the interfacial tension is 10-2 milli-Newton/meter order of magnitude. With the changing the polymer mass concentration of polymer system from 0.5gram/Litre, 1.0gram/Litre and 2.0gram/Litre, the viscosity of polymer system with low interfacial tension increased obviously. The recovery ratio can be enhanced further by polymer solution with low interfacial tension after both water flooding and polymer flooding.

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The Laboratory Research on Ultra-Low Interfacial Tension Foam Flooding System with High-Temperature and High-Salinity

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.71-78.2163 ◽

2011 ◽

Vol 71-78 ◽

pp. 2163-2168 ◽

Cited By ~ 4

Author(s):

Xin Liang ◽

Ming Hui Xiang ◽

Yong Yang ◽

Qi Hua Chen ◽

Zeng Rong Shu

Keyword(s):

High Temperature ◽

Interfacial Tension ◽

High Salinity ◽

Divalent Cations ◽

Laboratory Research ◽

Foam Properties ◽

Order Of Magnitude ◽

Low Interfacial Tension ◽

Foam Flooding ◽

Mixture System

To obtain the ultra-low interfacial tension foam flooding system for the real reservoir condition of high-temperature and high-salinity, foam properties and dynamic interfacial tension had been performed by Ross-miles test and spin drop tension meter respectively. Ten types of surfactants were screened by foamability, stability and interfacial tension (IFT) at 85°C, high-salinity with 800 mg/L divalent cations and 30000 mg/L total mineralization. The AOS, AESO and 20YB were selected to compose further anion-nonionic mixture system. Due to AOS had excellent foam properties, AESO could achieve low interfacial tension and 20YB could improve the film quality. Through series complex study, the ultra-low interfacial tension (10-4 mN/m order of magnitude) foam system was obtained with the composition of 0.15% wt AOS+0.15% wt AESO+0.11%~0.012% wt 20YB for high-temperature and high-salinity, which V foam was 240-235 mL and t 0.5 was 180-190 min. In addition, the synergistic effect of these surfactants had been described.

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Principles of attaining ultra-low interfacial tension: The role of hydrophile—lipophile-balance of surfactant at oil/water interface

Colloids and Surfaces ◽

10.1016/0166-6622(81)80020-0 ◽

1981 ◽

Vol 2 (4) ◽

pp. 301-314 ◽

Cited By ~ 34

Author(s):

K. Shinoda ◽

M. Hanrin ◽

H. Kunieda ◽

H. Saito

Keyword(s):

Interfacial Tension ◽

Water Interface ◽

Low Interfacial Tension ◽

Oil Water

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Study on Oil-Water Interfacial Behaviour of Henan Oilfield

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.700.602 ◽

2014 ◽

Vol 700 ◽

pp. 602-606

Author(s):

Quan Wei Du ◽

Kun Liu

Keyword(s):

Ternary System ◽

Interfacial Tension ◽

Composite System ◽

Weak Base ◽

Ternary Composite ◽

Interfacial Behaviour ◽

Oil Water ◽

Reduction Effect ◽

Interface Behaviour ◽

Better Than

In order to decide the formula of ASP system to be used in Henan oilfield, the weak base ternary composite system compounded with petroleum sulfonate(Ss), polymer and weak base; the alkali ASP system compounded with alkylbenzene sulfonates(Sy), polymer and alkali were studied, and the oil-water interface behaviour of Henan oilfield with weak base ASP system compounded with surfactant SHSA-HN6 and ZL-Ⅱ polymer was evaluated. The results showed that the interfacial tension reduction effect of Weak base ternary system is better than that of Alkali ternary system; the interfacial tension between oil and water can be reduced significantly by the weak base ternary system compounded with surfactant (Ss) and polymer (ZL-Ⅱand KYPAM). After adding 1.2% Na2CO3 to the mixture of surfactant (SHSA-HN6) and polymer, the interfacial tension of Henan oil-water was reduced to the ultra-low level(>10-3mN/m).

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A Model Representing a Physiological Role of CO2 at the Cell Membrane

The Journal of General Physiology ◽

10.1085/jgp.44.5.869 ◽

1961 ◽

Vol 44 (5) ◽

pp. 869-887 ◽

Cited By ~ 77

Author(s):

D. F. Sears ◽

R. M. Eisenberg

Keyword(s):

Cell Membrane ◽

Interfacial Tension ◽

Sessile Drop ◽

Pure Water ◽

Physiological Role ◽

Electrolyte Solutions ◽

Chloride Solutions ◽

Interfacial Tensions ◽

Molecular Arrangement

A model is presented suggesting the interaction of CO2 and bicarbonate on lipids of the cell membrane. The interfacial tensions between water and oil (benzene) phases were measured using the stalagmometer and the sessile drop methods. Effects of electrolyte solutions and of CO2 on molecular arrangement at the interface were calculated. Chloride solutions against oleic acid in benzene produced little decrease in interfacial tension from that measured for pure water against the oil phase. Presence or absence of CO2 caused no change in interfacial tension of water or chloride solutions against the oil phase. Bicarbonate salts in the absence of CO2 caused marked decreases in interfacial tension from that measured for water or chloride solutions. Concomitant with this decrease in interfacial tension were an increase in hydration of the interface and changes in molecular spacings of the lipid. This hydration may be considered as reflecting a more ionic-permeable cell membrane. The addition of CO2 to the bicarbonates caused an increase in interfacial tension of the model, approaching that of the chlorides, with decreased hydration of the interface. Viewed as occurring at the cell membrane this would make the lipid more continuous and decrease the ease of ionic penetration. In this way the action of bicarbonates and CO2 at the interface suggests an explanation of the action of CO2 on the cell.

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Ultra-Low Interfacial Tension of a Surfactant under a Wide Range of Temperature and Salinity Conditions for Chemical Enhanced Oil Recovery

Tenside Surfactants Detergents ◽

10.3139/113.110562 ◽

2018 ◽

Vol 55 (3) ◽

pp. 252-257 ◽

Cited By ~ 3

Author(s):

Derong Xu ◽

Wanli Kang ◽

Liming Zhang ◽

Jiatong Jiang ◽

Zhe Li ◽

...

Keyword(s):

Interfacial Tension ◽

Enhanced Oil Recovery ◽

Oil Recovery ◽

Wide Range ◽

Low Interfacial Tension

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The Effect of Carbonyl and Hydroxyl Compounds on Swelling Factor, Interfacial Tension, and Viscosity in CO2 Injection: A Case Study on Aromatic Oils

Processes ◽

10.3390/pr9010094 ◽

2021 ◽

Vol 9 (1) ◽

pp. 94

Author(s):

Asep Kurnia Permadi ◽

Egi Adrian Pratama ◽

Andri Luthfi Lukman Hakim ◽

Doddy Abdassah

Keyword(s):

Interfacial Tension ◽

Oil Recovery ◽

Viscosity Reduction ◽

Co2 Injection ◽

Minimum Miscibility Pressure ◽

Lower Viscosity ◽

Hydroxyl Compounds ◽

Swelling Factor

A factor influencing the effectiveness of CO2 injection is miscibility. Besides the miscible injection, CO2 may also contribute to oil recovery improvement by immiscible injection through modifying several properties such as oil swelling, viscosity reduction, and the lowering of interfacial tension (IFT). Moreover, CO2 immiscible injection performance is also expected to be improved by adding some solvent. However, there are a lack of studies identifying the roles of solvent in assisting CO2 injection through observing those properties simultaneously. This paper explains the effects of CO2–carbonyl and CO2–hydroxyl compounds mixture injection on those properties, and also the minimum miscibility pressure (MMP) experimentally by using VIPS (refers to viscosity, interfacial tension, pressure–volume, and swelling) apparatus, which has a capability of measuring those properties simultaneously within a closed system. Higher swelling factor, lower viscosity, IFT and MMP are observed from a CO2–propanone/acetone mixture injection. The role of propanone and ethanol is more significant in Sample A1, which has higher molecular weight (MW) of C7+ and lower composition of C1–C4, than that in the other Sample A9. The solvents accelerate the ways in which CO2 dissolves and extracts oil, especially the extraction of the heavier component left in the swelling cell.

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