Problems occurring in oilfields after secondary oil recovery can include low oil content, difficulty in tracing, and high production costs. The use of two-dimensional nanomaterials can improve the efficiency of oil exploration and extraction. In this study, we designed a new nanofluid based on lecithin-modified MXene (lecithin@MXene-COOH) for directional oil extraction and tertiary oil recovery. MXene has good interfacial affinity, and 0.02 % lecithin@MXene-COOH can be effectively enriched at the oil–water interface. The nanofluid based on lecithin@MXene-COOH has excellent emulsifying properties, and we found that the optimal formulation has an emulsifying volume of 12.8 mL. The efficient enrichment of lecithin@MXene-COOH at the oil–water interface means that it can effectively define the position of oil droplets. The lecithin@MXene-COOH nanofluid has excellent oil displacement effect, and can efficiently drive oil, with an improvement of recovery efficiency of up to 15.95 % after the traditional flooding stage. This research has developed a new application of MXene-based nanomaterials, and the lecithin@MXene-COOH nanofluid is predicted to have a successful future in the field of oilfield tracing and extraction.

中文翻译：

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定向采油：MXene 作为石油开发剂在石油勘探和生产中的新应用


油田在二次采油后出现的问题可能包括含油量低、难以追踪和生产成本高。使用二维纳米材料可以提高石油勘探和开采的效率。在这项研究中，我们设计了一种基于卵磷脂改性 MXene （lecithin@MXene-COOH） 的新型纳米流体，用于定向采油和三次采油。MXene 具有良好的界面亲和力，0.02% lecithin@MXene-COOH 可在油-水界面处有效富集。基于 lecithin@MXene-COOH 的纳米流体具有优异的乳化性能，我们发现最佳配方的乳化体积为 12.8 mL。lecithin@MXene-COOH 在油-水界面处的高效富集意味着它可以有效地定义油滴的位置。lecithin@MXene-COOH 纳米流体具有优异的驱油效果，可以高效驱动石油，在传统驱油阶段后，采收效率提高高达 15.95%。这项研究开发了基于 MXene 的纳米材料的新应用，预计 lecithin@MXene-COOH 纳米流体将在油田追踪和开采领域取得成功。