Effect of oil-based drilling fluid on the evolution of friction interface: A reactive molecular dynamics study at different temperatures

Luo, Yiyao; Zhu, Xiaohua; Liu, Yuhui; Wang, Xiaowen; Zhang, Hu; Li, Bo; Yang, Peng

doi:10.1016/j.triboint.2023.108820

Cited by 8 publications

(4 citation statements)

References 46 publications

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“…37 In MD simulations, the change in temperature is directly proportional to the change in kinetic energy, which is determined by the atomic movement. 15 Therefore, in the nanoscratching of pure Fe systems, the intense atomic movement generated by the interaction between the diamond tip and Fe atoms, as well as the chemical energy released by the breakage of chemical bonds, is converted into heat, leading to an increase in temperature in the local area (Figure 11d−f). When the scratch depths are 1, 3, and 5 Å, the TiC layer the coated system indeed serves as an effective thermal barrier (Figure 10a−c).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…From Figure , it can be seen that the high-temperature region of the two materials during grinding mainly concentrates below the tip and on the abrasive atoms ahead . In MD simulations, the change in temperature is directly proportional to the change in kinetic energy, which is determined by the atomic movement . Therefore, in the nanoscratching of pure Fe systems, the intense atomic movement generated by the interaction between the diamond tip and Fe atoms, as well as the chemical energy released by the breakage of chemical bonds, is converted into heat, leading to an increase in temperature in the local area (Figure d–f).…”

Section: Resultsmentioning

confidence: 99%

“…It should be noted that in the subsurface oil extraction and transportation systems, the primary composition of the core components is Fe element. 15 Therefore, a direct and intuitive method is needed to study the load dependence, anisotropy direction dependence, and the low friction and antiwear erosion properties of Fe-based substrates with TiC coatings at the atomic level. Molecular dynamics (MD) simulation is a simulation tool that observes the atomic time evolution in material systems on the ps−μs scale, allowing for a better understanding of material organization properties, microcracking mechanisms, and so on.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Therefore, research on the failure protection and wear and erosion resistance of TiC coatings for petroleum machinery at the nanoscale has not been conducted. It should be noted that in the subsurface oil extraction and transportation systems, the primary composition of the core components is Fe element . Therefore, a direct and intuitive method is needed to study the load dependence, anisotropy direction dependence, and the low friction and antiwear erosion properties of Fe-based substrates with TiC coatings at the atomic level.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Probing the Atomic Erosion Wear Characteristics of TiC-Coated Fe in Oil and Gas Drilling Environments

Tang,

Liu,

Liu

et al. 2024

Langmuir

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Probing the Atomic Erosion Wear Characteristics of TiC-Coated Fe in Oil and Gas Drilling Environments

Tang,

Liu,

Liu

et al. 2024

Langmuir

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Comparing the Tribological Performance of Water-Based and Oil-Based Drilling Fluids in Diamond–Rock Contacts

Bhamra,

Everhard,

Bomidi

et al. 2024

Tribol Lett

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Oil-based drilling fluids are usually assumed to provide lower friction compared to their water-based alternatives. However, clear evidence for this has only been presented for steel–rock and steel–steel contacts, which are representative of the interface between the drillstring and the borehole or casing. Another crucial interface that needs to be lubricated during drilling is that between the cutter (usually diamond) and the rock. Here, we present pin-on-disc tribometer experiments that show higher boundary friction for n-hexadecane-lubricated diamond–granite contacts than air- and water-lubricated contacts. Using nonequilibrium molecular dynamics simulations of a single-crystal diamond tip sliding on α-quartz, we show the same trend as in the experiments of increasing friction in the order: water < air < n-hexadecane. Analysis of the simulation results suggests that the friction differences between these systems are due to two factors: (i) the indentation depth of the diamond tip into the α-quartz substrate and (ii) the amount of interfacial bonding. The n-hexadecane system had the highest indentation depth, followed by air, and finally water. This suggests that n-hexadecane molecules reduce the hardness of α-quartz surfaces compared to water. The amount of interfacial bonding between the tip and the substrate is greatest for the n-hexadecane system, followed by air and water. This is because water molecules passivate terminate potential reactive sites for interfacial bonds on α-quartz by forming surface hydroxyl groups. The rate of interfacial bond formation increases exponentially with normal stress for all the systems. For each system, the mean friction force increases linearly with the mean number of interfacial bonds formed. Our results suggest that the expected tribological benefits of oil-based drilling fluids are not necessarily realised for cutter–rock interfaces. Further experimental studies should be conducted with fully formulated drilling fluids to assess their tribological performance on a range of rock types. Graphical Abstract

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The influence of particle size and velocity on the wear failure of TiC coated Fe under oil extraction conditions: A molecular dynamics study

Tang,

Liu,

Liu

et al. 2024

Engineering Failure Analysis

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Effect of oil-based drilling fluid on the evolution of friction interface: A reactive molecular dynamics study at different temperatures

Cited by 8 publications

References 46 publications

Probing the Atomic Erosion Wear Characteristics of TiC-Coated Fe in Oil and Gas Drilling Environments

Probing the Atomic Erosion Wear Characteristics of TiC-Coated Fe in Oil and Gas Drilling Environments

Comparing the Tribological Performance of Water-Based and Oil-Based Drilling Fluids in Diamond–Rock Contacts

The influence of particle size and velocity on the wear failure of TiC coated Fe under oil extraction conditions: A molecular dynamics study

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