Systematic experimental study of the temperature dependence of viscosity and rheological behavior of water-based drilling fluids with nano-additives

Минаков, А. В.; Pryazhnikov, M. I.; Mikhienkova, E. I.; Voronenkova, Y.O.

doi:10.1016/j.petlm.2022.03.001

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…[23] This effect can be further amplified in sugarwater mixtures with varying molar fractions. [24][25][26][27] To assess whether additives influence the efficiency of iron-LMCT in water at different temperatures, the kinetics of the reaction's induction period were examined. Starting material conversion with and without D-fructose were monitored using 1 H-NMR spectroscopy over a 3 hours at reaction temperatures of 4 °C and 25 °C, with samples drawn every 30 min, respectively (Scheme 7 and 8).…”

Section: Mechanistic Investigationsmentioning

confidence: 99%

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C-H Functionalisation by Iron Ligand-to-Metal Charge Transfer in Water

Stahl,

Koenig

2024

Preprint

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Functionalisation of partially water-soluble C-H precursors through Fe(III)Cl3 Ligand-to-Metal charge transfer catalysis in aqueous solution is achieved under near UV-light irradiation. The light-driven bond-homolysis of the Fe-Cl bond within the iron complex results in the generation of highly reactive chlorine radicals, facilitating hydrogen atom abstraction from a furane-derived starting material. Sugars or cinchonidine derivatives promote the interaction between metal salt and organic substrates. Lowering the reaction temperature to 4°C can modulate the reaction kinetics, resulting in a shorter induction period of the photoreaction.

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Section: Mechanistic Investigationsmentioning

confidence: 99%

“…We hypothesise that the increase in water's viscosity due to the lower temperature of the reaction medium, as well as the presence of D-fructose, may lead to a more effective reaction. [25] Comparable After protonation of the anionic product derivative, the final compound 12 is formed. [29] Scheme 9.…”

Section: Mechanistic Investigationsmentioning

confidence: 99%

C-H Functionalisation by Iron Ligand-to-Metal Charge Transfer in Water

Stahl,

Koenig

2024

Preprint

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“…A systematic experimental study of the temperature dependence of the viscosity of drilling fluids, modified by NPs of different size and composition, was performed in our recent work [13]. It was shown that the addition of NPs significantly influences the temperature dependence of the viscosity of clay and clay-polymer dispersions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoparticle and Carbon Nanotube Additives on Thermal Stability of Hydrocarbon-Based Drilling Fluids

Lysakova,

Minakov,

Skorobogatova

2023

Energies

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The article presents the results of experimental study on the effect of additives of silicon oxide nanoparticles, as well as single-walled and multi-walled carbon nanotubes on the colloidal stability and thermal degradation process of hydrocarbon-based drilling fluids. Such a comprehensive study of hydrocarbon-based drilling fluids was carried out for the first time. The effect of the concentration and size of silicon oxide nanoparticles, as well as the type and concentration of nanotubes on the colloidal stability of drilling fluids during thermal aging tests at different temperatures, was investigated. The nanoparticle size varied from 18 to 70 nm, and the concentration ranged from 0.25 to 2 wt.%. Single-walled and multi-walled nanotubes were studied, whose concentration varied from 0.01 to 0.5 wt.%. The thermal aging temperature varied from 30 to 150 °C. According to the results of the investigation, it was shown that the temperature stability of hydrocarbon-based drilling fluids can be significantly improved by adding the above substances. At the same time, it was shown that the use of single-walled nanotubes for thermal stabilization of drilling fluids was several times more effective than the use of multi-walled nanotubes, and tens of times more effective than the use of spherical silicon oxide nanoparticles.

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