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本文讨论了水平井酸化对酸液体系的基本要求。除酸液缓速、防粘土膨胀、铁离子稳定，破乳助排等与直井酸化相同的要求外，水平井酸化中使用的酸液体系应在长时间内保持低腐蚀速度，不产生点蚀，降阻效率高，而且要实行转向酸化。报道了新开发的碳酸盐岩油藏水平井酸化用的两种添加剂的应用性能：具有良好缓蚀性能并兼有破乳、降低表面张力等多项性能的多功能复合添加剂ＳＨＳ１；不溶于酸而溶于油的悬浮液型转向剂（酸化暂堵剂）ＳＨＳ２。
This article discusses the basic requirements of acid-liquid systems for horizontal well acidification. In addition to acid retarder slow, anti-clay expansion, iron ion stabilization, demulsification and drainage with the same vertical well acidification requirements, the horizontal well acidification acid system used in a long time to maintain a low corrosion rate, does not produce pitting , Reducing the efficiency of high resistance, but also the implementation of steering acidification. This paper reports the application performance of two additives for horizontal well acidification of newly developed carbonate reservoirs: SHS1, a multifunctional composite additive with good corrosion inhibition, multiple properties such as breaking emulsion and reducing surface tension; Insoluble in acid and soluble in oil suspension diverting agent (acidification temporary blocking agent) SHS 2.