Scale inhibition squeeze treatment is a common practice to prevent scale deposition within the downhole utilities, valve applications, and tubular components of the oil and gas producing wells. The conventional squeeze treatment has a short lifetime due to the reservoir rocks' limited adsorption of scale inhibitors and the quick desorption rate. As a result, this process has to be repeated multiple times per year, leading to massive increases in operational costs. Carbon-based nanomaterials are known for their high specific surface area, making them an attractive coating agent to enhance the capability of rocks’ surfaces to adsorb chemicals such as scale inhibitors. In this paper, carbon-based nanomaterials of graphene nanoplatelet (GNPs) and three different types of carbon nanotubes (CNTs) are proposed as novel nanocoating to extend the lifetime of the conventional scale inhibitor squeeze treatment. A natural polymer of Gum Arab (GA) was used to graft the nanomaterials surfaces to ensure a homogeneous and stabilized coating solution. The adsorption of diethylenetriamine penta (methylene phosphonic acid) (DTPMP) scale inhibitor into GNPs and CNTs was investigated using a UV–Vis spectrophotometer. Various characterization techniques such as FTIR, Raman spectroscopy, and XPS were performed to evaluate the interaction between DTPMP and the proposed nanocoating (GNPs/CNTs). Based on UV–Vis results, GNPs was found to be the optimal coating agent with an adsorption capacity of 135 mg/g at ambient temperature and 114 mg/g at 96 °C. Its coating gets saturated with DTPMP within 1 h of interaction. Increasing the initial scale inhibitor concentration was found to increase the adsorption capacity of GNPs. Based on the core flooding conducted on Berea sandstone, the injection of nanocoating into the core sample reduces the permeability by only 12%. Finally, the injected nanomaterial was safely transported through the core, and the primary retention mechanism was adsorption rather than physical filtration/plugging.

阻垢挤压处理是防止在井下设施、阀门应用和油气生产井的管状部件内结垢的常见做法。由于储层岩石对阻垢剂的吸附有限且解吸速度快，传统的挤压处理寿命短。因此，这个过程必须每年重复多次，导致运营成本大幅增加。碳基纳米材料以其高比表面积而闻名，使其成为一种有吸引力的涂层剂，可增强岩石表面吸附阻垢剂等化学物质的能力。在本文中，提出了石墨烯纳米片（GNP）和三种不同类型的碳纳米管（CNT）的碳基纳米材料作为新型纳米涂层，以延长常规阻垢剂挤压处理的寿命。阿拉伯树胶 (GA) 的天然聚合物用于接枝纳米材料表面，以确保均匀和稳定的涂层溶液。使用紫外-可见分光光度计研究了二亚乙基三胺五（亚甲基膦酸）（DTPMP）阻垢剂在 GNP 和 CNT 中的吸附。进行了各种表征技术，如 FTIR、拉曼光谱和 XPS，以评估 DTPMP 与所提出的纳米涂层 (GNPs/CNTs) 之间的相互作用。根据 UV-Vis 结果，发现 GNPs 是最佳的包衣剂，在环境温度下吸附容量为 135 mg/g，在 96 °C 下吸附容量为 114 mg/g。它的涂层在相互作用的 1 小时内被 DTPMP 饱和。发现增加初始阻垢剂浓度会增加 GNP 的吸附能力。基于对 Berea 砂岩进行的岩心驱替，向岩心样品中注入纳米涂层仅降低了 12% 的渗透率。最后，注入的纳米材料安全地通过核心传输，主要保留机制是吸附而不是物理过滤/堵塞。向岩心样品中注入纳米涂层只会使渗透率降低 12%。最后，注入的纳米材料安全地通过核心传输，主要保留机制是吸附而不是物理过滤/堵塞。向岩心样品中注入纳米涂层只会使渗透率降低 12%。最后，注入的纳米材料安全地通过核心传输，主要保留机制是吸附而不是物理过滤/堵塞。