针对鄂７井储集层的地质特征，提出了适合该井酸化作业的工作液配方，全面评价了酸液的性能。实验结果表明，该酸液与地层岩石的反应速度慢，腐蚀性小，滤失量低，易于返排，在较高浓度Ｆｅ~（３＋）存在时不沉淀，能满足现场施工的要求。 According to the geological characteristics of the reservoir in Well E 7, a working fluid formulation suitable for the well acidification operation was proposed, and the performance of the acid fluid was evaluated in an all-round way. The experimental results show that the acid has little reaction with formation rocks, low corrosiveness, low filtration loss, easy to return to the formation, and does not precipitate when Fe 3+ exists in a high concentration, which can meet the requirements of on-site construction.