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Nanomaterial-Polymer Composites for High-Temperature Fluid Loss Reduction in Water-Based Drilling Fluids

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Abstract:

In this study, we systematically evaluated the fluid loss reduction effect of four nanomaterials in high-temperature water-based drilling fluids. Compared to the natural polymer PAC, the synthetic acrylamide-based polymer-maintained integrity and reduced fluid loss from 36.25 mL to 14 mL after aging at 180 °C, while forming a thinner and less permeable filter cake. Among the nanomaterials tested, 0.5 wt.% TiO2 showed the most significant fluid loss reduction after aging at 180 °C, significantly optimizing the particle size distribution and reducing the fluid loss. When the polymer was used in combination with TiO2, a significant synergistic enhancement was observed, which reduced the fluid loss to a minimum value of 11.6 mL at 180 °C. Zeta potential, particle size analysis, and SEM images showed that the effect resulted from the improved colloidal stability, closer packing of the particles, and the formation of a dense filter cake structure. The results show that the nanomaterial-polymer composite system can significantly improve the high-temperature fluid loss reduction performance of drilling fluids through the dual mechanism of physical blocking and chemical interaction, which provides an effective strategy for the design of high-performance fluid loss reduction agents.

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Journal of Nano Research Vol. 92 View Preview

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Periodical:

Journal of Nano Research (Volume 92)

Pages:

75-81

DOI:

https://doi.org/10.4028/p-OC7xtk

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Online since:

March 2026

Authors:

Shao Cong Pang, Yu Xiu An*

Keywords:

Drilling Fluid, Fluid Loss, High Temperature, Nanomaterials, Polymers

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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