Experimental Investigation of Polymer Solutions Used in Enhanced Oil Recovery - Thermal Properties Improved by Nanoclay

Cheraghian, G.; Nezhad, S. Khalili; Kamari, M.; Bazgir, S.

doi:10.3997/2214-4609.20141684

Cited by 2 publications

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“…Such an interaction among the polymer and the NPs preserved the polymer chains from degradation and maintained a high extent of entanglement among the polymer chains attached to the NPs even under shearing. To demonstrate the effectiveness of the nanohybrid 1 system formulated in this work, a comparison was made with the work of Cheraghian and Nezhad [44], who formulated HPAM/nanoclay nanohybrid for CEOR application. A plot of the apparent viscosity vs. shear rate is given in Figure 6 (at room condition for Cheraghian and Nezhad [44]) and nanohybrid 1 (current study).…”

Section: Rheological Behavior Of the Hpam Solution And The Nanohybridmentioning

confidence: 99%

“…To demonstrate the effectiveness of the nanohybrid 1 system formulated in this work, a comparison was made with the work of Cheraghian and Nezhad [44], who formulated HPAM/nanoclay nanohybrid for CEOR application. A plot of the apparent viscosity vs. shear rate is given in Figure 6 (at room condition for Cheraghian and Nezhad [44]) and nanohybrid 1 (current study). Despite the higher T used in our study (85 • C), further enhancement in the viscosity of the HPAM solution was achieved with the combined addition of nanoclay and CuO NPs.…”

Section: Rheological Behavior Of the Hpam Solution And The Nanohybridmentioning

confidence: 99%

“…Comparison between the apparent viscosity of nanohybrid 1 (at 85 • C) with a nanoclay-based nanohybrid composed of 0.9 g of nanoclay and 3.2 g of HPAM (at T~25 • C)[44].…”

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confidence: 99%

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Enhancing the Performance of HPAM Polymer Flooding Using Nano CuO/Nanoclay Blend

et al. 2020

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A single polymer flooding is a widely employed enhanced oil recovery method, despite polymer vulnerability to shear and thermal degradation. Nanohybrids, on the other hand, resist degradation and maintain superior rheological properties at different shear rates. In this article, the effect of coupling CuO nanoparticles (NPs) and nanoclay with partially hydrolyzed polyacrylamide (HPAM) polymer solution on the rheological properties and the recovery factor of the nanohybrid fluid was assessed. The results confirmed that the NP agents preserved the polymer chains from degradation under mechanical, chemical (i.e., salinity), and thermal stresses and maintained good extent of entanglement among the polymer chains, leading to a strong viscoelastic attribute, in addition to the pseudoplastic behavior. The NP additives increased the viscosity of the HPAM polymer at shear rates varying from 10–100 s−1. The rheological properties of the nanohybrid systems varied with the NP additive content, which in turn provided a window for engineering a nanohybrid system with a proper mobility ratio and scaling coefficient, while avoiding injectivity issues. Sandpack flooding tests confirmed the superior performance of the optimized nanohybrid system and showed a 39% improvement in the recovery ratio relative to the HPAM polymer injection.

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Section: Rheological Behavior Of the Hpam Solution And The Nanohybridmentioning

confidence: 99%

Section: Rheological Behavior Of the Hpam Solution And The Nanohybridmentioning

confidence: 99%

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Enhancing the Performance of HPAM Polymer Flooding Using Nano CuO/Nanoclay Blend

et al. 2020

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“…Figure13. Histogram of the pore radius in the saturated and displacement states before and after the PMDF treatment.…”

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Experimental Investigation on a Novel Polyelectrolyte Molecular Deposition Film for Improved Injectivity in Low-Permeability Reservoirs

Lai

Nie

et al. 2020

ACS Omega

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Acrylamide and dimethyl diallyl ammonium chloride were used as monomers to synthesize a polyelectrolyte molecular deposition film (PMDF) injection agent for solving the problem of high injection pressure of water wells in low-permeability reservoirs. The structure of the PMDF injection agent was determined through IR and 1 H nuclear magnetic resonance (NMR). The performance evaluation results show a change of wettability from hydrophilic to neutral wetting with the contact angle changing from 22.32 to 73.31°b ecause of agent injection. It can also change the negative ζ-potential on the surface of the sand to a positive value. For comparison, core displacement experiments involving the commercial Gemini surfactant DF-G reveal that the effects of the depressurization of PMDF are more obvious than those of DF-G. The adsorption stability of the former is better than that of the latter. Especially, under a high-speed water flow of 30 pore volume (PV) injection, the depressurization rate of PMDF is still as high as 43.59%. Finally, the oil−water relative permeability curves and core nuclear magnetic resonance (NMR) experiments demonstrate that the PMDF treatment can reduce the irreducible water saturation, which indicated that the porosity of the flowable part of the core increased and the swept volume was increased. The suitable range of PMDF according to NMR pore-radius distribution within a low-permeability reservoir: the flowable partial pore required the throat radius greater than 0.01 μm.

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Experimental Investigation of Polymer Solutions Used in Enhanced Oil Recovery - Thermal Properties Improved by Nanoclay

Cited by 2 publications

References 0 publications

Enhancing the Performance of HPAM Polymer Flooding Using Nano CuO/Nanoclay Blend

Enhancing the Performance of HPAM Polymer Flooding Using Nano CuO/Nanoclay Blend

Experimental Investigation on a Novel Polyelectrolyte Molecular Deposition Film for Improved Injectivity in Low-Permeability Reservoirs

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