Water-soluble complexes of hydrophobically modified polymer and surface active imidazolium-based ionic liquids for enhancing oil recovery

Gou, Shaohua; Yin, Ting; Yan, Liwei; Guo, Qipeng

doi:10.1016/j.colsurfa.2015.02.022

Cited by 40 publications

(25 citation statements)

References 34 publications

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“…[12] On the other hand, the surface activity of ANOB solution can lower the oil-water interfacial tension. Thus, oil displacement efficiency can be improved, as well as the oil recovery to some extent.…”

Section: Effect Of Ca 2+ and Mg 2+ On Viscositymentioning

confidence: 99%

“…Recently, some scholars are interested in development of hydrophobically modified polyacrylamide (HMPAM) system to improve the performances of HPAM solution in temperature endurance, salt resistance and stabilities. [9][10][11][12] These studies mainly focused on direct polymerization of surface active monomers, whereas very scarce studies were conducted on the performance improvement of PAM and the polymerization of PAM with surface active monomers.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Characterization, and Property Evaluation of a Hydrophobically Modified Polyacrylamide as Enhanced Oil Recovery Chemical

Chen

Tang

et al. 2015

Journal of Dispersion Science and Technology

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A novel hydrophobically modified polyacrylamide p(AM/NaA/OP-10-AC/BOAM) was successfully synthesized via an aqueous micellar copolymerization method from acrylamide (AM), sodium acrylate (NaA), octylphenol polyoxyethylene acrylate (OP-10-AC), and small amounts of N-benzyl-N-octylacrylamide (BOAM), with the aim of investigating the copolymer's rheological behaviors under various conditions such as polymer concentration, shearing, temperature and salinity. The copolymer was characterized by infrared spectroscopy, scanning electron microscopy, and atomic force microscope. Scanning electron micrographs show large aggregates in solution formed by the association from the hydrophobic groups of the copolymer. Compared with partially hydrolyzed polyacryamide (HPAM), the copolymer shows a much higher thickening capability and a much greater ability to resist shearing, heat, and salts. This good property of the copolymer is attributed to its three-dimensional dimensional network structure. Downloaded by [New York University] at 23:49 15 July 2015 2According to the core flooding test, it can be obtained that oil recovery is enhanced about 4.3% by the copolymer flooding contrasted to the HPAM flooding in mid-low permeability cores under conditions of 1500 mg/L of polymers and 45 °C. All the results prove that the copolymer has the capability of increasing oil recovery by improving waterflood sweep efficiency in high-salinity reservoirs.

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Section: Effect Of Ca 2+ and Mg 2+ On Viscositymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Property Evaluation of a Hydrophobically Modified Polyacrylamide as Enhanced Oil Recovery Chemical

Chen

Tang

et al. 2015

Journal of Dispersion Science and Technology

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“…Among the EOR technologies, polymer flooding is widely used for its high viscosity of the displacing phase can improve the mobility ratio so as to enlarge the swept volume . However, the viscosity of polyacrylamide (PAM) and partially hydrolyzed PAM (HPAM) solutions get a significant decrease under harsh conditions such as high temperature, high saltness, and high shear rate, etc…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and solution properties of a surface‐active hydrophobically associating polymer

Ren

2018

J of Applied Polymer Sci

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A nonionic surfmer (MAA-EO 23 C 12 ) was prepared and reacted with acrylamide, acrylic acid, and a double tailed hydrophobic monomer (BTMAM) to synthesize a surface-active hydrophobically associating copolymer (SHAP) through photoinitiated free radical copolymerization in aqueous solution. Fourier transform infrared and 1 H-nuclear magnetic resonance spectroscopy were used to characterize the functional monomer and the SHAP. Several performance evaluations, such as viscosification property, temperature resistance, salt tolerance, and shear resistance, were also conducted. Experiment results demonstrated that the introduced nonionic surfmer and hydrophobic monomer could endow the copolymer with excellent temperature resistance, salt tolerance, and shear resistance capability at low concentration.

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“…13,14 However, a safe temperature limit for AM-AMPS copolymer is recommended below 90 o C based on the investigations by Kamal et al 15 In our previous studies, sulfonated copolymers have been proven to be successfully applied in EOR applications and possessed high performance on thickening property, temperature tolerance and salt resistance. [16][17][18][19][20] Recently, increasing attention has been paid to multifunctional polymers, especially imidazole-and imidazoline-containing polymers which show a wide range of potential applications. [21][22][23][24][25][26] And the chemical architecture of substituted imidazoline units constituted as the following: a five-membered aromatic heterocyclic containing two nitrogen atoms at the 1, 3-positions (namely, an electron-rich hydrophilic amidine (N=C-N) motif), a hydrophobic alkyl chain and a pendant side chain constituted by electron-donor hydrophilic functional group(s) attached to N of the motif and the C terminal, respectively.…”

Section: Introductionmentioning

confidence: 99%

Thermally stable imidazoline-based sulfonate copolymers for enhanced oil recovery

et al. 2015

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Novel imidazoline-based sulfonate copolymers (noted PAMDSCM and PAMPSCM) were successfully prepared by copolymerization of acrylamide (AM), acrylic acid (AA), 1-acrylamido ethyl-2-oleic imidazoline (ACEIM) with the sodium salts of 3-(diallyl-amino)-2-hydroxypropyl (NDS) or 2-acrylamido-2-methylpropane sulfonic acid (AMPS), respectively. The copolymers were characterized by infrared (IR) spectroscopy, 1 H nuclear magnetic resonance ( 1 H NMR) spectroscopy, pyrene fluorescence probe spectroscopy, viscosimetry and thermogravimetry (TG). Both PAMDSCM and PAMPSCM copolymers had excellent high-temperature tolerance in comparison with the same concentration of HPAM, and the residual viscosities were 32.0 mPa•s and 31.3 mPa•s (viscosity retention rates were 38.8% and 37.1%) at 140 o C, respectively. The copolymers possessed superior long-term thermal stability and their residual viscosity rates were up to 81.8% and 63.8% (52.9 mPa•s and 47.1 mPa•s) lasted 1.5 hours at 100 o C and 170 s -1 , respectively.

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Water-soluble complexes of hydrophobically modified polymer and surface active imidazolium-based ionic liquids for enhancing oil recovery

Cited by 40 publications

References 34 publications

Synthesis, Characterization, and Property Evaluation of a Hydrophobically Modified Polyacrylamide as Enhanced Oil Recovery Chemical

Synthesis, Characterization, and Property Evaluation of a Hydrophobically Modified Polyacrylamide as Enhanced Oil Recovery Chemical

Synthesis, characterization, and solution properties of a surface‐active hydrophobically associating polymer

Thermally stable imidazoline-based sulfonate copolymers for enhanced oil recovery

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