Surfactant and alkaline/surfactant/polymer (ASP) flooding are commonly used chemical enhanced oil recovery (EOR) methods. However, they are traditionally carried out in sandstone reservoirs and not in carbonates due to high adsorption of surfactant onto carbonate rock and, therefore, economic expenses. One of the strategies to reduce surfactant adsorption is the application of adsorption inhibitors. Therefore, this work evaluates the performance of a novel nonionic-anionic surfactant composition designed for a carbonate field with high temperature (70 °C) and salinity (201 g/L). The study focuses on the adsorption behaviour of surfactant onto the rock surface through a static adsorption test using high-performance liquid chromatography (HPLC) and interfacial tension (IFT) measurements for surfactant concentrations determination. The adsorption data obtained were analyzed with equilibrium models (Langmuir, Freundlich). In order to find the chemicals able to decrease the adsorption loss, a list of alkalis, polyelectrolytes, and nanoparticles was tested for compatibility and thermal stability, pH and interfacial performance in mixture with the surfactant. Then, the effectiveness of agents that passed the screening criteria was examined. It was found that the selected adsorption inhibitors decreased the adsorption significantly and reached a value lower by one order of magnitude in comparison with the surfactant. To the best of our knowledge, this is the first work that compares the effectiveness of all types of adsorption inhibitors that are mainly applied in EOR, namely alkalis, polyelectrolytes, and nanoparticles. The outcomes of this study contribute to the future design of surfactant flooding in carbonates even in harsh reservoir conditions.

表面活性剂和碱性/表面活性剂/聚合物（ASP）驱是常用的化学强化采油（EOR）方法。然而，由于表面活性剂对碳酸盐岩的高度吸附，因此传统上它们是在砂岩储层中而不是在碳酸盐岩中进行的，因此会产生经济费用。减少表面活性​​剂吸附的策略之一是应用吸附抑制剂。因此，这项工作评估了一种新型非离子-阴离子表面活性剂组合物的性能，该组合物设计用于高温（70 °C）和盐度（201 克/升）。该研究的重点是通过使用高效液相色谱 (HPLC) 和界面张力 (IFT) 测量确定表面活性剂浓度的静态吸附测试，研究表面活性剂在岩石表面的吸附行为。使用平衡模型（Langmuir，Freundlich）分析获得的吸附数据。为了找到能够降低吸附损失的化学品，测试了一系列碱、聚电解质和纳米颗粒与表面活性剂混合的相容性和热稳定性、pH 值和界面性能。然后，检查通过筛选标准的代理的有效性。发现选择的吸附抑制剂显着降低了吸附，与表面活性剂相比，吸附值降低了一个数量级。据我们所知，这是第一项比较主要应用于 EOR 的所有类型吸附抑制剂（即碱、聚电解质和纳米颗粒）的有效性的工作。即使在恶劣的储层条件下，这项研究的结果也有助于碳酸盐中表面活性剂驱的未来设计。