Interfacial Friction Evolution in an Oil-Based Drilling Fluid Environment: An Atomic Understanding from ReaxFF Simulations

Zhu, Xiaohua; Luo, Yiyao; Liu, Yunhai; Wang, Xiaowen; Zhang, Hu; Jiang, Yuhong

doi:10.1007/s11249-023-01748-x

Cited by 8 publications

(2 citation statements)

References 46 publications

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“…The simulation results were consistent with experimental data for sodium-based montmorillonite but not for potassium-based montmorillonite. Xiaohua et al (2023) [163] [167] utilized MD simulations to study the shear viscosity variation in supramolecular polymer drilling fluid systems with shear rate. The results indicated that when the shear rate exceeds a critical value, the decrease in shear viscosity is attributed to polymer molecules aligning along the flow field.…”

Section: Drilling Fluid Chemicalmentioning

confidence: 99%

“…The simulation results were consistent with experimental data for sodium-based montmorillonite but not for potassium-based montmorillonite. Xiaohua et al (2023) [ 163 ] investigated the evolution of interfacial friction in oil-based drilling fluid environments using ReaxFF simulation, analyzing molecular motion and friction chemical reactions of oil-based drilling fluid molecules, indicating that the decrease in friction is attributed to fluid dynamic lubrication of oil-based drilling fluid molecules and the passivation of a large amount of H 2 and a small amount of H atoms produced by friction chemical reactions. Jinbei et al (2024) [ 164 ] used all-atom MD to study the morphology and stability of montmorillonite colloids in a calcium ion environment, providing references for the failure of drilling fluid systems caused by calcium contamination.…”

Section: Application Of Numerical Simulation Technology In Drilling F...mentioning

confidence: 99%

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The Application Potential of Artificial Intelligence and Numerical Simulation in the Research and Formulation Design of Drilling Fluid Gel Performance

Sheng,

He,

et al. 2024

Gels

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Drilling fluid is pivotal for efficient drilling. However, the gelation performance of drilling fluids is influenced by various complex factors, and traditional methods are inefficient and costly. Artificial intelligence and numerical simulation technologies have become transformative tools in various disciplines. This work reviews the application of four artificial intelligence techniques—expert systems, artificial neural networks (ANNs), support vector machines (SVMs), and genetic algorithms—and three numerical simulation techniques—computational fluid dynamics (CFD) simulations, molecular dynamics (MD) simulations, and Monte Carlo simulations—in drilling fluid design and performance optimization. It analyzes the current issues in these studies, pointing out that challenges in applying these two technologies to drilling fluid gelation performance research include difficulties in obtaining field data and overly idealized model assumptions. From the literature review, it can be estimated that 52.0% of the papers are related to ANNs. Leakage issues are the primary concern for practitioners studying drilling fluid gelation performance, accounting for over 17% of research in this area. Based on this, and in conjunction with the technical requirements of drilling fluids and the development needs of drilling intelligence theory, three development directions are proposed: (1) Emphasize feature engineering and data preprocessing to explore the application potential of interpretable artificial intelligence. (2) Establish channels for open access to data or large-scale oil and gas field databases. (3) Conduct in-depth numerical simulation research focusing on the microscopic details of the spatial network structure of drilling fluids, reducing or even eliminating data dependence.

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Section: Drilling Fluid Chemicalmentioning

confidence: 99%

Section: Application Of Numerical Simulation Technology In Drilling F...mentioning

confidence: 99%

The Application Potential of Artificial Intelligence and Numerical Simulation in the Research and Formulation Design of Drilling Fluid Gel Performance

Sheng,

He,

et al. 2024

Gels

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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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Effect of hexagonal boron nitride on structural, mechanical, and tribological behavior of polyamide 6/glass fibers (5 wt%) hybrid nanocomposites

Vikram,

Pramanik,

Bhaumik

2023

Iran Polym J

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Interfacial Friction Evolution in an Oil-Based Drilling Fluid Environment: An Atomic Understanding from ReaxFF Simulations

Cited by 8 publications

References 46 publications

The Application Potential of Artificial Intelligence and Numerical Simulation in the Research and Formulation Design of Drilling Fluid Gel Performance

The Application Potential of Artificial Intelligence and Numerical Simulation in the Research and Formulation Design of Drilling Fluid Gel Performance

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

Effect of hexagonal boron nitride on structural, mechanical, and tribological behavior of polyamide 6/glass fibers (5 wt%) hybrid nanocomposites

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