黑液体系是由碱法造纸黑液（Ｂ）、石油磺酸盐（ＰＳ）和聚丙烯酰胺（ＨＰＡＭ）组成的复合体系。黑液中的碱与地层岩石接触时发生溶蚀作用及离子交换、矿物转换等，易造成碱耗，其中的石油磺酸盐和聚丙烯酰胺则可通过吸附作用而损耗。用药耗等值图法研究了黑液体系的三种成分与岩石接触过程中损耗量的大小、产生损耗的原因及减小损耗的方法，同时对黑液体系的碱耗、石油磺酸盐损耗和粘度变化情况进行了研究。结果表明，黑液体系的碱耗主要与碱和岩石的作用、聚丙烯酰胺的水解相关；石油磺酸盐损耗主要与岩石表面的吸附相关；黑液体系粘度变化则与聚丙烯酰胺的吸附和水解相关。另外，黑液体系中优化驱油配方（２３配方）的碱耗、石油磺酸盐损耗和粘度变化率都低于文献值，说明该配方的药耗符合驱油要求 Black liquor system is a composite system composed of alkali papermaking black liquor (B), petroleum sulfonate (PS) and polyacrylamide (HPAM). Alkali depletion occurs when alkali in the black liquor comes into contact with the formation rock, ion exchange, mineral conversion, etc., and petroleum sulfonate and polyacrylamide therein can be lost through adsorption. The method of equal value graph of drug consumption was used to study the three components of black liquor system, the amount of loss during contact with rock, the cause of loss and the way to reduce the loss. At the same time, the alkali consumption and the loss of petroleum sulfonate And viscosity changes were studied. The results showed that the alkali consumption of black liquor was mainly related to the action of alkali and rock and the hydrolysis of polyacrylamide. The loss of petroleum sulfonate was mainly related to the adsorption on rock surface. The viscosity change of black liquor was related to the adsorption of polyacrylamide and Hydrolysis related. In addition, the alkali consumption, petroleum sulfonate loss and viscosity change rate of the optimal flooding formula (2-3) in the black liquor system are both lower than those in the literature, indicating that the drug consumption of the formula complies with the flooding requirement