In coiled tubing applications, common constraints e.g., high friction, lateral drag and restricted flow rate increase the demand for friction modifiers. These modifiers also face the inevitable intrusion of abrasive particles in the wellbore that impair the drilling efficiency and accelerate wear of the sliding components. This study shows the tribological effect of sand particles in plain deionized (DI) water, resulting in a high friction environment with the risk of particles embedding in a two-body sliding behavior. To mitigate the drilling system’s performance degradation, two additives, inorganic fullerene-like tungsten disulfide (IF-WS₂) and an ionic liquid with alkanolamines named “Base,” were added and their synergic tribological effects with sand were investigated. The presence of sand particles offered a reduction in coefficient of friction (COF) by 22% in the presence of DI water + IF-WS₂, and a slight increase in wear. The Base additive was not as efficient as IF-WS₂ at the same sand content, resulting in an increase in the COF and wear. In addition to the rolling friction, the gradual exfoliation of the IF-WS₂ played an important role in alleviating friction and wear, leading to formation of tungsten-based tribolayer on sand particles.

在连续油管应用中，常见的限制因素，例如高摩擦、横向阻力和受限的流速，增加了对摩擦改进剂的需求。这些改性剂还面临着磨粒不可避免地侵入井眼，这会降低钻井效率并加速滑动部件的磨损。这项研究显示了砂粒在普通去离子 (DI) 水中的摩擦学效应，导致高摩擦环境，存在颗粒嵌入双体滑动行为的风险。为了减轻钻井系统的性能下降，两种添加剂，无机类富勒烯二硫化钨 (IF-WS ₂) 和一种名为“碱”的具有链烷醇胺的离子液体，并研究了它们与砂的协同摩擦学效应。在去离子水 + IF-WS ₂存在的情况下，砂粒的存在使摩擦系数 (COF) 降低了 22% ，并且磨损略有增加。在砂含量相同的情况下，基础添加剂不如 IF-WS ₂有效，导致 COF 和磨损增加。除了滚动摩擦外，IF-WS ₂的逐渐剥离在减轻摩擦和磨损方面发挥了重要作用，导致在砂粒上形成钨基摩擦层。