Carbon Quantum Dots Fluorescent Tracers for Production and Well Monitoring

Murugesan, Sankaran; Kuznetsov, O. V.; Suresh, Radhika; Agrawal, Devesh; Monteiro, O.R.; Khabashesku, Valéry N.

doi:10.2118/181503-ms

Cited by 15 publications

(9 citation statements)

References 6 publications

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“…These wavelengths are common for carbonaceous quantum dots with oxygenated and nitrogenated functional groups. Mugressan et al showed how the presence of nitrogen in N-doped CQDs generates a blue shift in the fluorescence wavelength. Hence, it is possible to change the color, or the fluorescence wavelength, by changing the chemical composition or introducing dopants.…”

Section: Resultsmentioning

confidence: 99%

“…On the basis of these results, the authors concluded that these types of nanoparticles have a tracer behavior and can be used for understanding interwell fluid dynamics. Murugesan et al 12 reported on CQDs synthesized using an electrochemical reaction. These CQDs showed different colors under UV irradiation, depending on the nitrogen content in their structures.…”

Section: Introductionmentioning

confidence: 99%

“…Even if CQDs are being implemented as tracers in the oil and gas industry, ,,− there are no reports, to the best of our knowledge, of CQDs being produced using a domestic microwave oven and Mortiño ( Vaccinium Meridionale Swartz ) extract, then used as green tracers. As mentioned above, CQDs are potential tracers for the oil industry.…”

Section: Introductionmentioning

confidence: 99%

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Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Franco

Candela

Gallego

et al. 2020

Ind. Eng. Chem. Res.

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The main objective of this study is to develop nanotechnology-based materials, specifically carbon quantum dots (CQDs), as alternative nonpolluting, nontoxic, and easily manipulated tracers for the oil industry using an easy and rapid synthesis from Mortinõ (Vaccinium meridionale Swartz) extract, a process that was evaluated in the laboratory and subjected to a Colombian oil field trial. The CQDs were synthesized using an easy and rapid microwave-assisted carbonization (MWC) methodology involving aqueous natural extraction in the presence of an organic nitrogen precursor. A displacement test at reservoir conditions in a porous media was used for evaluating CQDs retention, and a breakthrough curve with a CQDs saturation of around 1 pore volume injected was obtained, indicating that the CQDs could be completely removed from the porous media with null retention due to a poor interaction with the formation and preferential affinity to the aqueous phase. Fluorescence tests showed that quantification of the synthesized CQDs could be achieved for up to 1 ng L −1 . Coreflooding tests at reservoir conditions were performed under two scenarios: (1) monophase coreflooding (the core was saturated with water) and (2) biphasic coreflooding (at residual saturation of crude oil). The results showed that the CQD S behave excellently within these outlines and are not affected by the presence of crude oil, obtaining a breakthrough that is almost ideal for a tracer. A CQDs field trial in Colombia was conducted by injecting 20 kg of the nanomaterial at a concentration of 500 000 mg L −1 . The CQDs were analyzed in 10 producer wells, showing that they are useful as interwell tracers and the different interconnections between the different wells in the field were stablished. This study places the technology at a technology readiness level (TRL) of around 8, opens a broader landscape for the use of nanotechnology in the oil industry, and maintains Colombia as a pioneer in the application of nanoparticles and nanofluids under field conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Franco

Candela

Gallego

et al. 2020

Ind. Eng. Chem. Res.

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“…Core flow experiments showed that the recovery of CQDs in 1 wt % NaCl solution was 76% in cores with low permeability. CQDs thus provide a new alternative for tracers for monitoring reservoir conductions [166].…”

Section: Tracermentioning

confidence: 99%

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Ke-jian

Tang

et al. 2020

Nanomaterials

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Graphene and its derivatives, with their unique two-dimensional structures and excellent physical and chemical properties, have been an international research hotspot both in the research community and industry. However, in application-oriented research in the oil and gas industry they have only drawn attention in the past several years. Their excellent optical, electrical, thermal and mechanical performance make them great candidates for use in oil and gas exploration, drilling, production, and transportation. Combined with the actual requirements for well working fluids, chemical enhanced oil recovery, heavy oil recovery, profile control and water shutoff, tracers, oily wastewater treatment, pipeline corrosion prevention treatment, and tools and apparatus, etc., this paper introduces the behavior in water and toxicity to organisms of graphene and its derivatives in detail, and comprehensively reviews the research progress of graphene materials in the upstream oil and gas industry. Based on this, suggestions were put forward for the future research. This work is useful to the in-depth mechanism research and application scope broadening research in the upstream oil and gas industry.

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“…Carbonaceous nanomaterials are emerging as a sustainable alternative to their metal oxide counterparts. Carbon or graphene quantum dots (QDs), in particular, possess a unique set of attributes such as nanoscale size, low toxicity, high stability under harsh reservoir conditions, and tunable physicochemical properties, which make them ideal additives for these applications. − Furthermore, the quantum confinement effect due to the graphitic backbone of QDs endows them with fluorescent properties and the potential to be utilized as tracers for production and well monitoring and reservoir characterization . Given their small diameters (<10 nm) compared to the typical pore and throat sizes, , QDs are unlikely to cause any clogging issues if their retention by the rock is minimized.…”

Section: Introductionmentioning

confidence: 99%

Graphene Quantum Dots for the Mobilization and Solubilization of Nonaqueous Phase Liquids in Natural Porous Media

Rane

Goual

Zhang

2020

ACS Appl. Nano Mater.

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This study proposes an approach to synthesize graphene quantum dots (QDs) with remarkable physicochemical properties that allow them to effectively mobilize and solubilize nonaqueous phase liquids (NAPLs) such as crude oils in porous media. QDs are first extracted by mild oxidation of coal and then partially functionalized by alkylamines using a starch template to generate engineered QDs (EQDs). When mixed in equal amounts, the nanofluid can synergistically interact at oil/water interfaces and lower the interfacial tension (IFT) from 19.6 to 0.9 mN/m. The two quantum dots exhibit different behavior on minerals. EQDs do not adsorb because of steric hindrance caused by their aliphatic tails, whereas QDs adsorb moderately on sandstones through hydrogen bonding, leading to wettability alteration from oil-wet to weakly water-wet state. The nanofluid provides mixed-wet conditions that, together with IFT reduction, result in 21 vol % of incremental NAPL recovery compared to waterflooding. The performance of this mixture is curbed in carbonates with only 9.6 vol % of additional recovery because of strong QD adsorption and pore plugging. The ability of this nanofluid to alter wettability was further confirmed in a miniature silicate-rich rock using X-ray microtomography. The in situ contact angle distributions on quartz and carbonate shifted to a more water-wet state and covered a wide range of values, denoting a nonuniform wettability reversal. Thus, the application of QD-based nanofluids is more suitable in silicate-rich formations where chemical retention by the rock is minimum. This study paves the way for the development of more EQDs by tuning their structure via chemical functionalization of their oxygen-rich active sites.

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Carbon Quantum Dots Fluorescent Tracers for Production and Well Monitoring

Cited by 15 publications

References 6 publications

Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Graphene Quantum Dots for the Mobilization and Solubilization of Nonaqueous Phase Liquids in Natural Porous Media

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