With the increasing exploration of unconventional wells, such as horizontal wells and complex wells, and the increasingly strict national environmental protection regulations, drilling fluid lubricants are in increasing demand. High-performance and environment-friendly lubricants for water-based drilling fluids are urgently needed. In this work, Chinese yam (Dioscorea oppositifolia L.) was investigated as a drilling fluid lubricant; the effects of Chinese yam slurry on drilling fluid lubricating properties at different temperatures were investigated and the compatibility and inhibitory properties of Chinese yam slurry were studied. The results show that the viscosity coefficient of the mud cake is reduced by 44.5% as 1.5% Chinese yam slurry was added to water-based drilling fluids. Chinese yam also has certain temperature resistance in drilling fluids, and it can inhibit the swelling of clay. Chinese yam slurry is competitively compatible with other drilling fluid additives, and the lubricity of modified drilling fluids can also be improved effectively. The lubrication mechanism of Chinese yam slurry was investigated through thermogravimetric analysis, scanning electron microscopy, Fourier transform infrared spectroscopy and contact angle tests.

中文翻译：

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山药在水基钻井液中作为绿色润滑剂的研究

随着水平井、复杂井等非常规井的勘探力度加大，以及国家环保法规的日益严格，对钻井液润滑油的需求量越来越大。迫切需要高性能、环保的水基钻井液润滑剂。在这项工作中，山药（Dioscorea oppositifoliaL.) 作为钻井液润滑剂进行了研究；考察了山药泥浆在不同温度下对钻井液润滑性能的影响，研究了山药泥浆的配伍性和抑制性。结果表明，在水基钻井液中加入1.5%的山药泥浆，泥饼的黏度系数降低了44.5%。山药在钻井液中也有一定的耐温性，能抑制粘土的膨胀。山药泥浆与其他钻井液添加剂具有很好的相容性，也能有效提高改性钻井液的润滑性。通过热重分析、扫描电镜、