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首页> 外文期刊>Journal of Applied Polymer Science >Influence of Glycerides–Xanthan Gum Synergy on Their Performance as Lubricants for Water-Based Drilling Fluids
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Influence of Glycerides–Xanthan Gum Synergy on Their Performance as Lubricants for Water-Based Drilling Fluids

机译：甘油-黄原胶协同作用对其作为水基钻井液润滑剂的性能的影响

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摘要

Water-based fluids for drilling wells are an environmentally friendly alternative to oil-based formulations typically used in the oil industry. Aqueous mixtures of nonionic monoglyceride surfactants (C6, C8, C10, C12, and C18 carbon chains) and xanthan gum (XG) were investigated with that purpose, correlating their lubricity and solubility in water, as well as using surface tension and contact angle measurements. The results showed that monoglycerides behave as excellent lubricants in water, with a steady decrease of the friction coefficient as the hydrocarbon chain length increased. Monoglycerides were able to reduce the friction coefficient even further when used in XG suspensions, suggesting that they are probably forming a complex with the polysaccharide that shows a synergy toward their performance as lubricants. Experiments of adsorption onto iron oxide nanoparticles also produced evidence of the interaction between these molecules, which favors their adsorption on the metal surface. These results indicate that interactions occurring in solution between the surfactants and the polysaccharide are crucial in the mechanism of action of these mixtures as lubricants in water-based drilling fluids.
机译：用于钻井的水基流体是石油工业中通常使用的油基配方的环保替代品。为此，对非离子甘油单酸酯表面活性剂（C6，C8，C10，C12和C18碳链）和黄原胶（XG）的水性混合物进行了研究，将它们在水中的润滑性和溶解性相关联，并使用表面张力和接触角测量。结果表明，甘油单酸酯在水中表现优异，随着烃链长度的增加，摩擦系数逐渐降低。单甘油酯在XG悬浮液中使用时，甚至能够进一步降低摩擦系数，这表明它们可能与多糖形成复合物，从而对它们作为润滑剂的性能具有协同作用。吸附到氧化铁纳米颗粒上的实验还产生了这些分子之间相互作用的证据，这有利于它们在金属表面的吸附。这些结果表明在表面活性剂和多糖之间的溶液中发生的相互作用对于这些混合物作为水基钻井液中的润滑剂的作用机理至关重要。

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