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Jiao J, Li T, Zhang G, Xiong J, Lang X, Quan X, Cheng Y, Wei Y. Molecular Dynamics Simulations of the Short-Chain Fluorocarbon Surfactant PFH XA and the Anionic Surfactant SDS at the Air/Water Interface. Molecules 2024; 29:1606. [PMID: 38611886 PMCID: PMC11013209 DOI: 10.3390/molecules29071606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/19/2024] [Accepted: 03/31/2024] [Indexed: 04/14/2024] Open
Abstract
The research and development of alternatives to long-chain fluorocarbon surfactants are desperately needed because they are extremely toxic, difficult to break down, seriously harm the environment, and limit the use of conventional aqueous film-forming foam fire extinguishing agents. In this study, mixed surfactant systems containing the short-chain fluorocarbon surfactant perfluorohexanoic acid (PFHXA) and the hydrocarbon surfactant sodium dodecyl sulfate (SDS) were investigated by molecular dynamics simulation to investigate the microscopic properties at the air/water interface at different molar ratios. Some representative parameters, such as surface tension, degree of order, density distribution, radial distribution function, number of hydrogen bonds, and solvent-accessible surface area, were calculated. Molecular dynamics simulations show that compared with a single type of surfactant, mixtures of surfactants provide superior performance in improving the interfacial properties of the gas-liquid interface. A dense monolayer film is formed by the strong synergistic impact of the two surfactants. Compared to the pure SDS system, the addition of PFHXA caused SDS to be more vertically oriented at the air/water interface with a reduced tilt angle, and a more ordered structure of the mixed surfactants was observed. Hydrogen bonding between SDS headgroups and water molecules is enhanced with the increasing PFHXA. The surface activity is arranged in the following order: PFHXA/SDS = 1:1 > PFHXA/SDS = 3:1 > PFHXA/SDS = 1:3. These results indicate that a degree of synergistic relationship exists between PFHXA and SDS at the air/water interface.
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Affiliation(s)
- Jinqing Jiao
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao 266071, China; (G.Z.); (X.L.); (Y.C.)
| | - Tao Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China; (T.L.); (J.X.); (X.Q.)
| | - Guangwen Zhang
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao 266071, China; (G.Z.); (X.L.); (Y.C.)
| | - Jing Xiong
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China; (T.L.); (J.X.); (X.Q.)
| | - Xuqing Lang
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao 266071, China; (G.Z.); (X.L.); (Y.C.)
| | - Xiaolong Quan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China; (T.L.); (J.X.); (X.Q.)
| | - Yiwei Cheng
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao 266071, China; (G.Z.); (X.L.); (Y.C.)
| | - Yuechang Wei
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China; (T.L.); (J.X.); (X.Q.)
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2
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Wang H, You Q, Zhang T, Adenutsi CD, Gao M. Experimental Investigation on Spontaneous Imbibition of Surfactant Mixtures in Low Permeability Reservoirs. ACS OMEGA 2023; 8:14171-14176. [PMID: 37091392 PMCID: PMC10116499 DOI: 10.1021/acsomega.3c00973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
Spontaneous imbibition of surfactants could efficiently enhance oil recovery in low permeability sandstone reservoirs. The majority of studies have considered the application of individual surfactants to alter wettability and reduce interfacial tension (IFT). However, a significant synergistic effect has been reported between different types of surfactants and between salts and surfactants. Therefore, this study systematically studied the capability of a binary surfactant mixture (anionic/nonionic) and a ternary surfactant mixture (anionic/nonionic/strong base-weak acid salt) in imbibition enhanced oil recovery (IEOR). The interfacial properties and the cores' wettability were explored by IFT and contact angle measurements, respectively. Subsequently, the imbibition performances of different types of surfactant solutions were discussed. The results suggested that the surfactants' potential to enhance oil recovery followed the order of ternary surfactant mixture > binary surfactant mixture > anionic > nonionic > amphoteric > polymer. The ternary surfactant mixture exhibited strong capacity to reverse the rock surface from oil-wet (125°) to strongly water-wet (3°), which was more significant than both binary surfactant mixtures and individual surfactants. In addition, the ternary surfactant mixture led to an ultralow IFT value of 0.0015 mN/m, achieving the highest imbibition efficiency (45% OOIP). This research puts forward some new ideas on the application of the synergistic effects of surfactants in IEOR from low-permeability sandstone reservoirs.
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Affiliation(s)
- Huan Wang
- School
of Energy Resources, China University of
Geosciences, Beijing 100083, China
- Beijing
Key Laboratory of Unconventional Natural Gas Geological Evaluation
and Development Engineering, Beijing 100083, China
| | - Qing You
- School
of Energy Resources, China University of
Geosciences, Beijing 100083, China
- Beijing
Key Laboratory of Unconventional Natural Gas Geological Evaluation
and Development Engineering, Beijing 100083, China
| | - Tiantian Zhang
- School
of Energy Resources, China University of
Geosciences, Beijing 100083, China
- Beijing
Key Laboratory of Unconventional Natural Gas Geological Evaluation
and Development Engineering, Beijing 100083, China
| | - Caspar Daniel Adenutsi
- Core
and Rock Properties Laboratory, Department of Petroleum Engineering,
Faculty of Civil and Geo-Engineering, Kwame
Nkrumah University of Science and Technology, Kumasi MC9M+9VJ, Ghana
| | - Mingwei Gao
- School
of Petroleum Engineering, State Key Laboratory of Heavy Oil, China University of Petroleum (East China), Qingdao, Shandong 266580, China
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3
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A molecular study on the behavior of polyethoxylated alkyl ethers surfactants in a water/n-alkane interface. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Kesarwani H, Srivastava V, Mandal A, Sharma S, Choubey AK. Application of α-MnO 2 nanoparticles for residual oil mobilization through surfactant polymer flooding. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:44255-44270. [PMID: 35132514 DOI: 10.1007/s11356-022-19009-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Injection of surfactant and polymer slug is among the most effective chemical enhanced oil recovery processes. The only problem encountered with the surfactant polymer (SP) flooding is the loss of surface-active agents that reduce the efficiency of surfactants in the chemical slug. Various attempts to modify SP flooding have been made previously so that the surfactant loss due to adsorption could be reduced. Nanoparticles (NPs) are one of the most effective ways of reducing surfactant adsorption as surfactant particles are held in the liquid phase by nanoparticles, resulting in lower surfactant losses due to adsorption. However, the high cost of the NPs limits their use on the field scale. To encounter this problem, the present study focuses on the application of the manganese dioxide NPs, synthesized through a green route that is economically viable. These NPs are found to be cost-effective as compared to commercially available NPs as well as the synthesis of these NPs does not require the use of toxic chemicals. The 1000 ppm NPs effectively reduced the surfactant adsorption by 46%. The surface tension was lowered from 29.4 to 26.1 mN/m when 1000 ppm NPs were applied to 2500 ppm surfactant solution. Also, the nanoparticles were found to increase the viscosity of the chemical slug by increasing the solid particles present in the slug. The sand pack flooding experiments were carried out to assess the crude oil mobilization ability of the NPs assisted SP flooding. The oil recovery was found to increase from 5% of the original oil in place, resulting in ~ 75% of the crude oil recovery, which was only ~ 70% when NPs were not introduced into the system.
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Affiliation(s)
- Himanshu Kesarwani
- Department of Petroleum Engineering and Geo Engineering, Rajiv Gandhi Institute of Petroleum Technology, Jais, 229304, India
| | - Vartika Srivastava
- Department of Basic Science and Humanities, Rajiv Gandhi Institute of Petroleum Technology, Jais, 229304, India
| | - Ajay Mandal
- Enhanced Oil Recovery Laboratory, Department of Petroleum Engineering, Indian Institute of Technology (ISM), Dhanbad, 826004, India.
| | - Shivanjali Sharma
- Department of Petroleum Engineering and Geo Engineering, Rajiv Gandhi Institute of Petroleum Technology, Jais, 229304, India.
| | - Abhay Kumar Choubey
- Department of Basic Science and Humanities, Rajiv Gandhi Institute of Petroleum Technology, Jais, 229304, India
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5
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Effects of rhamnolipid bio-surfactant and sodium dodecylbenzene sulfonate (SDBS) surfactant on enhanced oil recovery from carbonate reservoirs. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1007/s43153-021-00208-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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6
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Characteristics of Viscoelastic-Surfactant-Induced Wettability Alteration in Porous Media. ENERGIES 2021. [DOI: 10.3390/en14248454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Wettability alteration is one of the most important mechanisms of surfactant flooding. In this work, the combined Amott/USBM (United States Bureau of Mines) method was applied to study the average wettability alteration of initially neutral cores after viscoelastic-surfactant (VES) filtration. The effects of static aging, dynamic aging, VES concentration, filtration flow rate, and pore radius on the alteration of a core’s average wettability were studied. The wettability-alteration trends measured by Amott and USBM were consistent, demonstrating that the overall hydrophilicity of the core was enhanced after VES filtration. The wettability alterations of the core brought about by dynamic aging were more significant than by static aging. The viscoelastic properties of the VES played an important role in altering the wettability. In addition, the ability of the VES to affect the core’s wettability was significantly enhanced when the VES concentration was increased, which was beneficial in increasing VES adsorption on the pore-wall surface, thus altering the overall wettability of the core. Increasing filtration flow rates can destroy those high-viscosity VES aggregates via the higher shear rate. A higher retention of VES makes the core more hydrophilic. The difference in the wettability of cores with different pore radius after VES filtration was not significant. The alteration of average wettability caused by VES in porous media provides a new vision for studying the EOR mechanism of VES.
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Investigation on the stability of mixed AlOOH/SiO2 aqueous dispersions and their application to stabilize Pickering emulsions in the presence of TX-100 and enhance oil recovery. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Banerjee B, Paria S. Effect of Electrolytes on Solution and Interfacial Behaviors of Double Chain Cationic-Nonionic Surfactant Mixtures for Hydrophobic Surface Wetting and Oil/Water Emulsion Stability Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10560-10572. [PMID: 34424690 DOI: 10.1021/acs.langmuir.1c01672] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The solution behaviors of the binary mixture of double chain cationic surfactant didodecyldimethylammonium bromide (DDAB) with nonionic surfactants of varied head groups, EO-9 and EO-40, in the presence and absence of electrolytes were studied and found nonideal behavior. The different physicochemical properties such as Gibb's surface excess (Γ), minimum area per molecule (Amin), and interaction parameters at bulk (βM) and interface (βσ) were calculated. In the presence of nonionic surfactants, lowering of CMC, CVC, and surface tension at these two concentrations of DDAB were observed. The βM and βσ values indicate strong interaction between DDAB and EO-40 mixed system. Further, addition of electrolytes to the mixed systems show increased interaction and change of physicochemical properties because of the combination of electrical and salting out effects.
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Affiliation(s)
- Barnali Banerjee
- Interfaces and Nanomaterials Laboratory, Department of Chemical Engineering, National Institute of Technology, Rourkela-769008, Orissa, India
| | - Santanu Paria
- Interfaces and Nanomaterials Laboratory, Department of Chemical Engineering, National Institute of Technology, Rourkela-769008, Orissa, India
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9
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Awan FUR, Al-Yaseri A, Akhondzadeh H, Iglauer S, Keshavarz A. Influence of mineralogy and surfactant concentration on zeta potential in intact sandstone at high pressure. J Colloid Interface Sci 2021; 607:401-411. [PMID: 34509114 DOI: 10.1016/j.jcis.2021.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/23/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
HYPOTHESIS Zeta-potential in the presence of brine has been studied for its application within hydrocarbon reservoirs. These studies have shown that sandstone's zeta-potential remains negatively charged, non-zero, and levels-off at salinities > 0.4 mol.dm-3, thus becoming independent of salinity when ionic strength is increased further. However, research conducted to date has not yet considered clay-rich (i.e. clay ≥ 5 wt%) sandstones. EXPERIMENTS Firstly, streaming potential measurements were conducted on Bandera Gray sandstones (clay-rich and clay-poor) with 0.6 and 2 mol.dm-3 NaCl brine-saturated in pressurised environments (6.895 MPa overburden and 3.447 MPa back-pressure). Secondly, the streaming potential was determined at identical conditions for the effect of two surfactants, SDBS and CTAB, at concentrations of 0.01 and 0.1 wt% on the clay-poor sample in 0.6 mol.dm-3 NaCl. Thirdly, a comparison of zeta potentials determined via electrophoretic and streaming potential was conducted. Accordingly, this work analyses the effects of mineralogy and surfactants within this process. FINDINGS Clay-rich sandstone possessed lower zeta-potentials than clay-poor sandstone at the two tested salinities. SDBS reduced zeta-potential and yielded higher repulsive forces rendering the rock more hydrophilic. Additionally, electrophoretic zeta-potentials were higher when compared to streaming zeta-potentials. Mechanisms for the observed phenomena are also provided.
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Affiliation(s)
- Faisal Ur Rahman Awan
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia; Centre for Sustainable Energy and Resources, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia; Department of Petroleum and Gas Engineering, New M. A. Jinnah Road Ext., Dawood University of Engineering and Technology, Karachi 74800, Sindh, Pakistan
| | - Ahmed Al-Yaseri
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia
| | - Hamed Akhondzadeh
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia; Centre for Sustainable Energy and Resources, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia
| | - Stefan Iglauer
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia; Centre for Sustainable Energy and Resources, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia.
| | - Alireza Keshavarz
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia; Centre for Sustainable Energy and Resources, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Western Australia, Australia.
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10
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Ntakirutimana S, Tan W. Synergistic effects of ionic and nonionic surfactants treatment on activated carbon electrodes for inverted capacitive deionization. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117987] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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11
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Aziz UA, Adnan N, Sohri MZR, Mohshim DF, Idris AK, Azman MA. Characterization of Anionic–Nonionic Surfactant Mixtures for Enhanced Oil Recovery. J SOLUTION CHEM 2019. [DOI: 10.1007/s10953-019-00902-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Wei Y, Babadagli T. Changing interfacial tension and wettability using new generation chemicals and nano metal particles at elevated temperatures and pressures: An analysis through a new experimental design for heavy-oil recovery applications. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1542311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- You Wei
- School of Mining and Petroleum Engineering, Faculty of Engineering, University of Alberta, Edmonton, Canada
| | - Tayfun Babadagli
- School of Mining and Petroleum Engineering, Faculty of Engineering, University of Alberta, Edmonton, Canada
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13
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Kumari R, Kakati A, Nagarajan R, Sangwai JS. Synergistic effect of mixed anionic and cationic surfactant systems on the interfacial tension of crude oil-water and enhanced oil recovery. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1489280] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Rashmi Kumari
- Department of Chemical Engineering, Indian Institute of Technology Madras , Chennai , India
- Enhanced Oil Recovery Laboratory, Petroleum Engineering Program, Department of Ocean Engineering, Indian Institute of Technology Madras , Chennai , India
| | - Abhijit Kakati
- Enhanced Oil Recovery Laboratory, Petroleum Engineering Program, Department of Ocean Engineering, Indian Institute of Technology Madras , Chennai , India
| | - R. Nagarajan
- Department of Chemical Engineering, Indian Institute of Technology Madras , Chennai , India
| | - Jitendra S. Sangwai
- Enhanced Oil Recovery Laboratory, Petroleum Engineering Program, Department of Ocean Engineering, Indian Institute of Technology Madras , Chennai , India
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14
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Ruan CY, Zhang GS, Zhou ZH, Zhang Q, Situ WX, Zhang L, Zhu Y, Zhang L. Effects of Polyether Surfactants on Dynamic Interfacial Tension of Betaine Solutions against Crude Oil. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chong-Yu Ruan
- School of Chemistry, Chemical Engineering and Life Sciences; Wuhan University of Technology; Wuhan 430070 China
| | - Guo-Shan Zhang
- Development Experiment Center of Xinjiang Oilfield Research Institute of Experiment & Testing; No. 29, Junggar Road, Karamay 834000 China
| | - Zhao-Hui Zhou
- State Key Laboratory of Enhanced Oil Recovery; PetroChina Research Institute of Petroleum Exploration & Development; No. 20, Xue Yuan Road, Beijing 100083 China
| | - Qun Zhang
- State Key Laboratory of Enhanced Oil Recovery; PetroChina Research Institute of Petroleum Exploration & Development; No. 20, Xue Yuan Road, Beijing 100083 China
| | - Wei-Xian Situ
- School of Chemistry, Chemical Engineering and Life Sciences; Wuhan University of Technology; Wuhan 430070 China
| | - Lei Zhang
- Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Yan Zhu
- School of Chemistry, Chemical Engineering and Life Sciences; Wuhan University of Technology; Wuhan 430070 China
| | - Lu Zhang
- School of Chemistry, Chemical Engineering and Life Sciences; Wuhan University of Technology; Wuhan 430070 China
- Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; Beijing 100190 China
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15
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Hajibagheri F, Hashemi A, Lashkarbolooki M, Ayatollahi S. Investigating the synergic effects of chemical surfactant (SDBS) and biosurfactant produced by bacterium ( Enterobacter cloacae ) on IFT reduction and wettability alteration during MEOR process. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Kumar S, Mandal A. Thermodynamics of Micellization, Interfacial Behavior and Wettability Alteration of Aqueous Solution of Nonionic Surfactants. TENSIDE SURFACT DET 2017. [DOI: 10.3139/113.110514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The present work deals with the physiochemical properties of polyoxyethylene sorbitan fatty acid esters (polysorbates), which are commonly known under the trade name Tween. Thermodynamics of micellization and adsorption at air-water interface for these nonionic surfactants solutions have been studied over a broad range of temperature. As the temperature of the surfactant solutions increases, the surface tension decreases whereas the critical micelle concentration (CMC) of each surfactant solution initially decreases and then increases. The free Gibb free energies of the micelle formation
Δ
G
m
o
$\Delta {\rm{G}}_{\rm{m}}^{\rm{o}}$
, and the surfactant adsorption
Δ
G
ads
o
$\Delta {\rm{G}}_{{\rm{ads}}}^{\rm{o}}$
, are calculated for the CMC of each surfactant at different temperatures. The surface or expanding pressure (Πcmc), minimum area per molecule (Amin), maximum surface excess (Γmax) are also calculated. The interfacial tension (IFT) between the aqueous surfactant solutions and the crude oil are measured at different concentrations of the surfactants using a spinning drop tensiometer. The contact angles are determined on an oil wet quartz surface to investigate the wettability alteration in the presence of Tween surfactants with varying salinity. FTIR analysis of quartz at dry and oil wet state, crude oil and COBRS (crude oil-brine-rock-surfactant) combinations are performed to identify the associated functional groups and their mutual interactions.
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Affiliation(s)
- Sunil Kumar
- Department of Petroleum Engineering , Indian Institute of Technology (ISM), Dhanbad 826004 , India
| | - Ajay Mandal
- Department of Petroleum Engineering , Indian Institute of Technology (ISM), Dhanbad 826004 , India
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17
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Characterizing the impact of surfactant structure on interfacial tension: a molecular dynamics study. J Mol Model 2017; 23:112. [DOI: 10.1007/s00894-017-3285-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 02/20/2017] [Indexed: 10/20/2022]
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18
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Zhang X, Zhou Y, Yang X. Physicochemical properties of alcohol polyoxyethylene ether acetate/alkyl ethoxy polyglycoside surfactant mixtures. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2016.1230865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xiaolan Zhang
- China Research Institute of Daily Chemical Industry, Taiyuan, P. R. China
| | - Yuan Zhou
- China Research Institute of Daily Chemical Industry, Taiyuan, P. R. China
| | - Xiuquan Yang
- China Research Institute of Daily Chemical Industry, Taiyuan, P. R. China
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