Nanotechnology in Enhanced Oil Recovery

Cheraghian, Goshtasp; Rostami, Sara; Afrand, Masoud

doi:10.3390/pr8091073

Cited by 83 publications

(47 citation statements)

References 91 publications

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“…The contact angle is the base of calculation of the surface free energy (SFE) which is the most important factor in the cohesive and adhesive of the asphalt mixture structure and is directly related to the moisture damage of asphalt pavement. The Contact Angle (CA) is a feature to quantify the wettability of solid surfaces when in contact with a droplet 61 . A CA value smaller or higher than 90° on a solid substrate shows a substrate is hydrophilic or hydrophobic, respectively.…”

Section: Resultsmentioning

confidence: 99%

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Cheraghian

Wistuba

Kiani

et al. 2021

Sci Rep

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Warm mix asphalt (WMA) is gaining increased attention in the asphalt paving industry as an eco-friendly and sustainable technology. WMA technologies are favorable in producing asphalt mixtures at temperatures 20–60 °C lower in comparison to conventional hot mix asphalt. This saves non-renewable fossil fuels, reduces energy consumption, and minimizes vapors and greenhouse gas emissions in the production, placement and conservation processes of asphalt mixtures. At the same time, this temperature reduction must not reduce the performance of asphalt pavements in-field. Low aging resistance, high moisture susceptibility, and low durability are generally seen as substantial drawbacks of WMA, which can lead to inferior pavement performance, and increased maintenance costs. This is partly due to the fact that low production temperature may increase the amount of water molecules trapped in the asphalt mixture. As a potential remedy, here we use fumed silica nanoparticles (FSN) have shown excellent potential in enhancing moisture and aging susceptibility of asphalt binders. In this study, asphalt binder modification by means of FSN was investigated, considering the effects of short-term and long-term aging on the rheological, thermal, and microstructural binder properties. This research paves the way for optimizing WMA by nanoparticles to present enhanced green asphalt technology.

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Section: Resultsmentioning

confidence: 99%

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Cheraghian

Wistuba

Kiani

et al. 2021

Sci Rep

Self Cite

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show abstract

“… 11 , 66 On the addition of 25 vol % CSNs to the solution, the contact angle further reduced to a value of 82°, which further decreased to a minimum value of 43° at 600 s. The reduction of the contact angle in the presence of nanoparticles could be attributed to the adsorption of nanoparticles on the interface. 67 , 68 The reduction in the contact angle clearly indicates the shifting of wettability from mixed wetting toward water-wet.…”

Section: Resultsmentioning

confidence: 99%

Application of Novel Colloidal Silica Nanoparticles in the Reduction of Adsorption of Surfactant and Improvement of Oil Recovery Using Surfactant Polymer Flooding

2021

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Surfactant polymer flooding is one of the most common chemical enhanced oil recovery techniques, which improves not only the microscopic displacement of the fluid through the formation of the emulsion but also the volumetric sweep efficiency of the fluid by altering the viscosity of the displacing fluid. However, one constraint of surfactant flooding is the loss of the surfactant by adsorption onto the reservoir rock surface. Hence, in this study, an attempt has been made to reduce the adsorption of the surfactant on the rock surface using novel colloidal silica nanoparticles (CSNs). CSNs were used as an additive to improve the performance of the conventional surfactant polymer flooding. The reduction in adsorption was observed in both the presence and absence of a polymer. The presence of a polymer also reduced the adsorption of the surfactant. Addition of 25 vol % CSNs effectively reduced the adsorption of up to 61% in the absence of a polymer, which increased to 64% upon the introduction of 1000 ppm polymer in the solution at 2500 ppm of the surfactant concentration at 25 °C. The adsorption of surfactant was also monitored with time, and it was found to be increasing with respect to time. The adsorption of surfactant increased from 1.292 mg/g after 0.5 days to 4.179 mg/g after 4 days at 2500 ppm of surfactant concentration at 25 °C. The viscosity, surface tension, and wettability studies were also conducted on the chemical slug used for flooding. The addition of CSNs effectively reduced the surface tension as well as shifted the wettability toward water-wet at 25 °C. Sand pack flooding experiments were performed at 60 °C to access the potential of CSNs in oil recovery, and it was found that the addition of 25 vol % CSNs in the conventional surfactant polymer chemical slug aided in the additional oil recovery up to 5% as compared to that of the conventional surfactant polymer slug.

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“…The most widely applied catalysts are heterogeneous catalysts based on transition metals, oxide, sulfide, carbide and phosphide nanoparticles, as well as metalized solid acids [36][37][38]. The possible approaches to apply the nanoparticles in various heavy oil production technologies were evaluated in a review article [39]. The main advantages of nanocatalysts over traditional ones is their huge surface area with the absence of a porous structure that can be clogged with coke-like compounds [40].…”

Section: Nanocatalystsmentioning

confidence: 99%

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

et al. 2021

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The aquathermolysis process is widely considered to be one of the most promising approaches of in-situ upgrading of heavy oil. It is well known that introduction of metal ions speeds up the aquathermolysis reactions. There are several types of catalysts such as dispersed (heterogeneous), water-soluble and oil soluble catalysts, among which oil-soluble catalysts are attracting considerable interest in terms of efficiency and industrial scale implementation. However, the rock minerals of reservoir rocks behave like catalysts; their influence is small in contrast to the introduced metal ions. It is believed that catalytic aquathermolysis process initiates with the destruction of C-S bonds, which are very heat-sensitive and behave like a trigger for the following reactions such as ring opening, hydrogenation, reforming, water–gas shift and desulfurization reactions. Hence, the asphaltenes are hydrocracked and the viscosity of heavy oil is reduced significantly. Application of different hydrogen donors in combination with catalysts (catalytic complexes) provides a synergetic effect on viscosity reduction. The use of catalytic complexes in pilot and field tests showed the heavy oil viscosity reduction, increase in the content of light hydrocarbons and decrease in heavy fractions, as well as sulfur content. Hence, the catalytic aquathermolysis process as a distinct process can be applied as a successful method to enhance oil recovery. The objective of this study is to review all previously published lab scale and pilot experimental data, various reaction schemes and field observations on the in-situ catalytic aquathermolysis process.

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Nanotechnology in Enhanced Oil Recovery

Cited by 83 publications

References 91 publications

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Application of Novel Colloidal Silica Nanoparticles in the Reduction of Adsorption of Surfactant and Improvement of Oil Recovery Using Surfactant Polymer Flooding

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

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