Janus nanoparticles as lubricant and anti-wear additives in water-based drilling fluid

Xuan Yang; Li Daqi; Deng Shijie; Yang Haoru; Xiao Yao; Liang Fuxin

doi:10.7623/syxb202609011

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Janus nanoparticles as lubricant and anti-wear additives in water-based drilling fluid

更新时间：2026-10-17

- Janus nanoparticles as lubricant and anti-wear additives in water-based drilling fluid
- ACTA PETROLEI SINICA Vol. 47, Issue 9, Pages: 1888-1897(2026)
- 作者机构：
  
  1. 中石化石油工程技术研究院有限公司,北京,102206
  2. 清华大学化学工程系,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.7623/syxb202609011
  CLC： TE254
- Online First：14 October 2026，
  
  Published：2026
- 稿件说明：
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宣扬, 李大奇, 邓师洁, 杨昊儒, 肖瑶, 梁福鑫. 基于Janus纳米颗粒的水基钻井液润滑抗磨剂[J]. 石油学报, 2026, 47(9): 1888-1897.

Xuan Yang, Li Daqi, Deng Shijie, et al. Janus nanoparticles as lubricant and anti-wear additives in water-based drilling fluid[J]. ACTA PETROLEI SINICA, 2026, 47(9): 1888-1897.
宣扬, 李大奇, 邓师洁, 杨昊儒, 肖瑶, 梁福鑫. 基于Janus纳米颗粒的水基钻井液润滑抗磨剂[J]. 石油学报, 2026, 47(9): 1888-1897. DOI： 10.7623/syxb202609011.

Xuan Yang, Li Daqi, Deng Shijie, et al. Janus nanoparticles as lubricant and anti-wear additives in water-based drilling fluid[J]. ACTA PETROLEI SINICA, 2026, 47(9): 1888-1897. DOI： 10.7623/syxb202609011.

摘要

基于Janus颗粒结构设计及调控方法，将强疏水的聚四氟乙烯（PTFE）与亲水性的氧化硅（SiO

）相结合，制备了能够在水性介质中良好分散的PTFE@SiO

Janus纳米颗粒，考察了Janus纳米颗粒在加重膨润土基浆和水基钻井液体系中高温老化后的润滑抗磨性能。研究结果表明，质量分数为2%的Janus纳米颗粒能够分别降低基浆和钻井液体系的摩擦系数51.3%和36.5%，并且与酯类润滑剂复配后能够起到协同增效作用。此外，Janus纳米颗粒还具有较好的抗磨性能，在高载荷下的磨痕面积明显低于酯类润滑剂。作用机理的分析表明，摩擦过程中Janus颗粒的PTFE端通过分子链易于滑移的特性，形成连续润滑膜，降低摩擦系数，刚性的SiO

端则起到提高润滑膜强度的作用，保证润滑效能的稳定发挥。独特的“双面神”结构是Janus纳米颗粒兼具优异润滑和抗磨性能的关键。

Abstract

Based on the structural engineering and regulation strategy of Janus nanoparticles

hydrophobic polytetrafluoroethylene (PTFE) and hydrophilic silica (SiO

) were combined to fabricate PTFE@SiO

Janus nanoparticles with excellent dispersibility in aqueous media. The lubrication and anti-wear performance of Janus nanoparticles after high-temperature aging in weighted bentonite-based slurry and water-based drilling fluid systems was systematically investigated. The results show that at a dosage of 2%（mass fraction）

Janus nanoparticles reduce the friction coefficient of the base slurr

y and drilling fluid systems by 51.3% and 36.5%

respectively

and exhibit a clear synergistic effect when combined with ester-based lubricants. In addition

Janus nanoparticles demonstrate superior anti-wear performance

with significantly smaller wear scar areas under high-load conditions compared with ester lubricants. Mechanistic analysis indicates that

during the friction process

the PTFE side of Janus nanoparticles readily forms a continuous lubricating film owing to the facile slippage of molecular chains

thereby reducing the friction coefficient; the rigid SiO

side enhances the mechanical strength of the lubricating film

ensuring stable lubrication performance. Overall

the unique Janus amphiphilic structure is the key to the outstanding lubrication and anti-wear performance of the nanoparticles.

关键词

Keywords

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