精细石油化工

评价了P(AMPS-co-AM)聚合物与不同类型纳米颗粒（二氧化钛、U-GNPs、F-GNPs）对水基钻井液流变性能的影响。结果表明：在常温下，F-GNPs显著提升钻井液的结构强度与携屑能力，最佳掺量为0.12%；在高温下，聚合物与F-GNPs协同增效显著，P(AMPS-co-AM)添加量为1.5%时，180°C老化后动切力与塑性黏度保持率分别达88%和92%，显示出优异的热稳定性，为深部煤层钻探钻井液高温稳定性问题提供了有效解决方案。

The effect of P(AMPS co AM) polymer and different types of nanoparticles(including titanium dioxide, U-GNPs, and F-GNPs) on the rheological properties of water-based drilling fluids was evaluated. The experimental results show that under normal temperature conditions, F-GNPs have the most significant effect on improving the rheological properties of drilling fluids. The optimal addition amont is 0.12%, which can effectively enhance the structural strength and chip carrying capacity of drilling fluids. Under high temperature conditions, P(AMPS co AM) polymer exhibits excellent synergistic effect with F-GNPs. When the polymer addition amount is 1.5%, the drilling fluid system can still maintain a dynamic shear force retention rate of 88% and a plastic viscosity retention rate of 92% after high-temperature aging at 180 ℃, demonstrating excellent thermal stability. Nano polymer composite materials developed in this study provide an effective technical solution for solving the high-temperature stability problem of drilling fluids in deep coal seam drilling.