Evaluation of highly stable ultrahigh-molecular-weight partially hydrolyzed polyacrylamide for enhanced oil recovery

Choi, Jin-Kyu; Ka, Duyoun; Chung, Tae Woong; Jung, Junyang; Koo, Gunhyo; Uhm, Taewon; Jung, Sung Hoon; Park, Sounghee; Jung, Hee‐Tae

doi:10.1007/s13233-015-3076-3

Cited by 33 publications

(30 citation statements)

References 22 publications

(46 reference statements)

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“…Again, employing the widely used HPAM as a benchmark, the degree of hydrolysis (the degree of anionicity) typically ranges from 15% to 35%. The optimal charge density is reservoir-dependent but can be controlled using two different techniques: hydrolysis of polyacrylamide (through co-hydrolysis or post-hydrolysis, see [54,60]) or copolymerization of acrylamide and acrylic acid (sodium acrylate) [26,61,62]. Extensions to other polyacrylamide-based polyelectrolytes would typically involve multicomponent polymerization (see, for example, [26][27][28]53,63]).…”

Section: Polymer Compositionmentioning

confidence: 99%

“…This makes it possible in principle to separate molecules by size and composition simultaneously; Messaud et al [91] suggest that the technique could be used to evaluate polymers with molecular weights as high as 10 9 g/mol, and the polymer chains would undergo minimal shear degradation during analysis. In a recent study, Choi et al [62] used FFF to evaluate ultra-high molecular weight polymers for EOR. In their work, they were able to evaluate an ultra-high molecular weight HPAM sample (absolute-weight average molecular weight reported as 7.330 × 10 6 Da) using a solution of sodium chloride (NaCl; 0.1 M) and sodium azide (NaN 3 ; 0.2 g/L) as the effluent [62].…”

Section: Molecular Weight Averagesmentioning

confidence: 99%

“…In a recent study, Choi et al [62] used FFF to evaluate ultra-high molecular weight polymers for EOR. In their work, they were able to evaluate an ultra-high molecular weight HPAM sample (absolute-weight average molecular weight reported as 7.330 × 10 6 Da) using a solution of sodium chloride (NaCl; 0.1 M) and sodium azide (NaN 3 ; 0.2 g/L) as the effluent [62]. More details about FFF (and variations on the technique) have been provided in a detailed review by Messaud et al [91].…”

Section: Molecular Weight Averagesmentioning

confidence: 99%

“…Next, thermal degradation studies are considered. Many researchers (including [20,26,29,31,35,37,62]) are working towards more thermally stable polymers for EOR, especially since polymer flooding is currently limited to reservoirs with moderate temperatures. Although some researchers have reported that polymer flooding can be used in reservoirs up to 100 • C [97], Sheng et al [17] found that the median temperature for polymer-flooding projects was only 46.1 • C. The general aversion to high-temperature conditions is likely due to two major temperature-related limitations for EOR polymers: the potential for degradation of the polymer backbone and the potential for hydrolysis [98,99].…”

Section: Thermal Degradationmentioning

confidence: 99%

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Evaluation of Polymeric Materials for Chemical Enhanced Oil Recovery

2020

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Polymer flooding is a promising enhanced oil recovery (EOR) technique; sweeping a reservoir with a dilute polymer solution can significantly improve the overall oil recovery. In this overview, polymeric materials for enhanced oil recovery are described in general terms, with specific emphasis on desirable characteristics for the application. Application-specific properties should be considered when selecting or developing polymers for enhanced oil recovery and should be carefully evaluated. Characterization techniques should be informed by current best practices; several are described herein. Evaluation of fundamental polymer properties (including polymer composition, microstructure, and molecular weight averages); resistance to shear/thermal/chemical degradation; and salinity/hardness compatibility are discussed. Finally, evaluation techniques to establish the polymer flooding performance of candidate EOR materials are described.

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Section: Polymer Compositionmentioning

confidence: 99%

Section: Molecular Weight Averagesmentioning

confidence: 99%

Section: Molecular Weight Averagesmentioning

confidence: 99%

Section: Thermal Degradationmentioning

confidence: 99%

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Evaluation of Polymeric Materials for Chemical Enhanced Oil Recovery

2020

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“…-Rheological properties. A polymer solution often exhibits shear thinning within a certain range of shear rates [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Polymer Degradation on Polymer Flooding in Homogeneous Reservoirs

Xin

et al. 2018

MATEC Web Conf.

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Abstract. In this paper, physical and numerical simulations were applied to investigate the polymer degradation performance and its effect on polymer enhanced oil recovery (EOR) efficiency in homogeneous reservoirs. Physical experiments were conducted to determine basic physicochemical properties of the polymer, including viscosity, rheology, and degradation. A new mathematical model was proposed, and an in-house simulator was designed to further explore polymer degradation. The results of the physical experiments illustrated that polymer could increase polymer solution viscosity significantly, and the relationship between polymer solution viscosity and polymer concentration exhibited a clear power law relationship. However, the viscosity of a polymer solution with the same polymer concentration decreased with an increase in the shear rate, showing shear thinning performance. Moreover, the viscosity decreased with an increase in time, which was caused by polymer degradation. The validation of the designed simulator was improved when compared to the simulation results using ECLIPSE V2013.1 software. The difference between 0 and 0.1 day -1 in the polymer degradation rate showed a decrease of 6% in oil recovery after 2,000 days, according to simulation results, which demonstrated that polymer degradation had an adverse effect on polymer flooding efficiency.

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Molecular weight and the Mark‐Houwink relation for ultra‐high molecular weight charged polyacrylamide determined using automatic batch mode multi‐angle light scattering

Wang

Huang

2016

J of Applied Polymer Sci

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This study presents an automatic batch mode (i.e., off‐line) multi‐angle light scattering (MALS) method for the molecular weight (MW) determination of ultra‐high MW (UHMW) polyacrylamide (PAM) homopolymer and acrylamide copolymers. This method combines a MALS detector with a sample dilution and injection device that automatically delivers a concentration gradient from a stock solution. The automation makes it practical to use the batch MALS method for routine MW analysis of UHMW polymers. The automatic batch MALS analyses of a series of poly(sodium acrylate‐co‐acrylamide) (30:70 mol %) in 1.0M NaCl show a non‐linear Mark‐Houwink relation in the MW range of 1.2 × 106 to 12.6 × 106 g mol−1. The entire molecular weight range can be fit with a quadratic relation or two linear equations, one for molecular weight up to 5.3 × 106 g mol−1 and the other from 5.3 × 106 to 12.6 × 106 g mol−1. The non‐linear Mark‐Houwink relation suggests that the extrapolation of the Mark‐Houwink equation beyond the measured MW range into the UHMW regions can significantly overestimate the MW of the UHMW polymers. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43748.

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Evaluation of highly stable ultrahigh-molecular-weight partially hydrolyzed polyacrylamide for enhanced oil recovery

Cited by 33 publications

References 22 publications

Evaluation of Polymeric Materials for Chemical Enhanced Oil Recovery

Evaluation of Polymeric Materials for Chemical Enhanced Oil Recovery

Effect of Polymer Degradation on Polymer Flooding in Homogeneous Reservoirs

Molecular weight and the Mark‐Houwink relation for ultra‐high molecular weight charged polyacrylamide determined using automatic batch mode multi‐angle light scattering

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