Inspired Fluorinated BDD Film for Multifunctional Protection of Downhole Sensor Electrodes
Jiahao Liu, Shuo Zhao, Jincan Wang, Jiaxi Liu, Xiang Yu, Jing Zhang
TL;DR
A fluorinated diamond film inspired by fish scales protects oil well sensors from wear, corrosion, and fouling, improving their durability and accuracy.
Contribution
A fluorinated boron-doped diamond film with biomimetic structures is developed to enhance electrode durability in harsh oilfield environments.
Findings
FBDD-coated electrodes show a friction coefficient of 0.08 and wear rate of 5.1 × 10−7 mm3/(N·mm).
The film achieves oil and water contact angles of 95.32° and 106.47°, indicating strong amphiphobic properties.
FBDD films outperform industrial benchmarks in wear resistance, corrosion resistance, and fouling prevention.
Abstract
Conductivity sensors play a vital role in monitoring production data in oil wells to ensure efficient oilfield operations, and their service performance depends on the durability of Invar alloy electrodes. The alloy electrodes are susceptible to damage from abrasive solid particles, corrosive media, and oil fluids in downhole environments. The degradation of the alloy electrodes directly compromises the signal stability of conductivity sensors, resulting in inaccurate monitoring data. Inspired by the intrinsic oleophobic properties of fish scales, we developed a fluorinated boron-doped diamond (FBDD) film with biomimetic micro–nano structures to enhance the wear resistance, corrosion resistance, and amphiphobicity of Invar alloy electrodes. The fish scale architecture was fabricated through argon-rich hot-filament chemical vapor deposition (90% Ar, 8 h) followed by fluorination.…
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Taxonomy
TopicsDiamond and Carbon-based Materials Research · Advanced Sensor and Energy Harvesting Materials · Calcium Carbonate Crystallization and Inhibition