Amphiphilic copolymers based on PEG‐acrylate as surface active water viscosifiers: Towards new potential systems for enhanced oil recovery

Raffa, Patrizio; Broekhuis, Antonius; Picchioni, Francesco

doi:10.1002/app.44100

Cited by 39 publications

(28 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PEG has been mentioned as being water soluble, salt tolerant and in some cases, thermo-responsive. Thus, the use of PEG in the preparation of surface-active polymers has recently experienced a great interest (Raffa et al 2016). Osterloh and Jante Jr (1992) used a high salinity brine of 190,000 mg/L TDS, to verify whether the PEG addition can improve the cost-effectiveness of surfactant/polymer flooding.…”

Section: Introductionmentioning

confidence: 99%

Novel application of PEG/SDS interaction as a wettability modifier of hydrophobic carbonate surfaces

et al. 2018

View full text Add to dashboard Cite

Wettability alteration of carbonate reservoirs from oil-wet to water-wet is an important method to increase the efficiency of oil recovery. Interaction between surfactants and polymers can enhance the effectiveness of surfactants in EOR applications. In this study, the interaction of polyethylene glycol (PEG) with an ionic surfactant, sodium dodecyl sulphate (SDS), is evaluated on an oil-wet carbonate rock surface by using contact angle measurements. The results reveal that wettability alteration of carbonate rocks is achieved through PEG/SDS interaction on the rock surface above a critical aggregation concentration (CAC). The behaviour of PEG/SDS aqueous solutions is evaluated using surface and interfacial tension measurements. Furthermore, the effect of PEG and SDS concentrations and impact of electrolyte addition on PEG/SDS interaction are investigated. It is shown that electrolyte (NaCl) can effectively decrease the CAC values and accordingly initiate the wettability alteration of rocks. Moreover, in a constant SDS concentration, the addition of NaCl leads to a reduction in the contact angle, which can also be obtained by increasing the aging time, temperature and pre-adsorption of PEG on the rock surface.

show abstract

Section: Introductionmentioning

confidence: 99%

Novel application of PEG/SDS interaction as a wettability modifier of hydrophobic carbonate surfaces

et al. 2018

View full text Add to dashboard Cite

show abstract

“…This finding is likely caused by the PEG being confined to the particle surfaces. A lower dexrease of the surface tension was for instance observed by Raffa et al [106] for PEGA polymerized into a comb structure compered to free PEGA monomer. Nevertheless, as is clear from figure 4.10, in which the particle concentration was kept constant, the IFT is lowered more with increasing salt concentration, which supports the hypothesis of a salt-induced dehydration of the PEG-layer as the driving force.…”

Section: Paper IIImentioning

confidence: 74%

Stabilizing Colloidal Particles against Salting-out by Shortening Surface Grafts

et al. 2019

View full text Add to dashboard Cite

I I performed the syntheses of the particles grafted with mPEGA polymers of 5000 g/mol, as well as the particles with a polystyrene core. I performed the SAXS analysis, the DCP measurements of the former as well as the DLS measurements of both the former and latter. In addition, I did the cryo-EM image analysis and contributed to the discussion around it. I also wrote the "Crosslinked particles" section of the paper and part of the "Conclusions". Paper II I performed all of the synthesis work. I carried out the SAXS measurements with technical assistance and I analyzed some of the SAXS data using model fitting. I performed the DLS stability measurements of the new batches as well as for the LL25 batch. I wrote everything, except the part about the Flory-Huggins model for the stability, in a first draft of the paper. I contributed to the development of the Flory-Huggins model. Paper III I performed the synthesis, the majority of experimental planning, execution and interpretation of the results as well as most of the measurements, exception being the non-dialyzed particles in the pendant drop method and the Pickering emulsions. The SANS measurements were done with assistance. In addition, I wrote the first draft of the paper. Paper IV I performed the synthesis as well as all the sample preparations. I did the SAXS measurements together with the co-author with on-site techniqual assistance at the ESRF.

show abstract

“…The use of poly(ethylene glycol) acrylate in the preparation of surface-active polymers has attracted a lot of attention in the past few years. 16,[22][23][24][25][26] In some cases, the polymers were water-soluble and salt-tolerant. On the other hand, polymeric surfactants based on hydrophobically modified polyacrylamides have been emerged as promising candidates for EOR applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and laboratory evaluation ofiso‐tridecyloxypolyethylene glycol acrylate copolymers as potential viscosity reducers for heavy oil

Fu-sheng

Lei

Liu

et al. 2020

Energy Science & Engineering

View full text Add to dashboard Cite

As driven by the increase in global fuel demand and decrease in worldwide reserves of conventional oil, it is important to develop new production technologies for heavy oil. In this work, copolymers PAAI7, PAAI10, and PAAI15 were synthesized and evaluated as potential viscosity reducers for heavy oil. iso‐Tridecyloxypolyethylene glycol acrylates (I13CxAA, x = 7, 10, 15), acrylic amide (AM), and 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS) were polymerized to give the copolymers PAAIx, respectively. Copolymers PAAIx were characterized by FTIR, 1H NMR spectroscopy, and TGA and showed good thermal stabilities as the decomposition temperature was above 350°C. Their viscosity‐average molecular weights were measured as in the range between 6.53 × 106 and 10.58 × 106 g/mol. The effects of temperature, shear rate, and salinity on the viscosity of polymer solutions were studied, and PAAIx had reasonable rheological properties. The solutions of PAAIx in formation water could emulsify heavy oil sample to form oil‐in‐water emulsion when mass ratio of oil:water was in the range of 6:4‐2:8, respectively. The rates of reduction in viscosity of emulsions compared with that of original oil sample were 53.5%‐97.5% at 50°C under shear rate of 20 s−1. The effects of oil:water ratio, emulsifying temperature, and shear rate on the viscosities of emulsions were extensively studied, and the effect of the polymer structure on the emulsification and viscosity reduction of heavy oil was also discussed. Among three copolymers, PAAI15 formed the most stable emulsion with heavy oil and the emulsion had the lowest viscosity. PAAI15 had the potential for further study.

show abstract

Amphiphilic copolymers based on PEG‐acrylate as surface active water viscosifiers: Towards new potential systems for enhanced oil recovery

Cited by 39 publications

References 42 publications

Novel application of PEG/SDS interaction as a wettability modifier of hydrophobic carbonate surfaces

Novel application of PEG/SDS interaction as a wettability modifier of hydrophobic carbonate surfaces

Stabilizing Colloidal Particles against Salting-out by Shortening Surface Grafts

Synthesis and laboratory evaluation ofiso‐tridecyloxypolyethylene glycol acrylate copolymers as potential viscosity reducers for heavy oil

Contact Info

Product

Resources

About