ASP三元复合体系中储层矿物碱耗实验

Reservoir Mineral Alkali Consumption Experiment in the ASP Ternary Complex System

针对大庆油田萨中区块的储层矿物组成,开展了高岭石、伊利石、绿泥石、长石、石英五种矿物在ASP三元复合体系中和在单一氢氧化钠溶液中的静态碱耗实验研究,分别给出了五种矿物在ASP三元复合体系中和在单一氢氧化钠溶液中碱耗规律,并进行了对比分析。研究表明,聚合物和表面活性剂对储层矿物碱耗有抑制作用,在ASP三元复合体系中与在单一氢氧化钠溶液中相比,储层矿物碱耗量明显降低;在单一氢氧化钠溶液中黏土矿物和骨架矿物的碱耗方式均以化学反应碱耗为主,而在ASP三元复合体系中黏土矿物碱耗方式以物理吸附碱耗为主,骨架矿物碱耗方式以化学反应碱耗为主。

Reservoir mineral component of Sazhong Block in Daqing Oilfield include kaolinite,illite,chlorite,feldspar and quartz,the static alkali consumption experiment of five minerals in the ASP ternary complex system and single sodium hydroxide solution were studied. The alkali consumption rule of the five minerals in the ASP ternary complex system and in single sodium hydroxide solution were put forward and analyzed,respectively. The research showed that polymer and surfactant had inhibitory effect on the reservoir mineral alkali consumption. The reservoir mineral alkali consumption in the ASP ternary complex system reduced obviously compared to that in the single sodium hydroxide solution. In single sodium hydroxide solution,the alkali consumption of skeletal mineral and clay mineral were mainly in chemical reaction alkali way;however,the alkali consumption of clay in the ASP ternary complex system was mainly in physical adsorption alkali way,and skeletal mineral alkali consumption was mainly in chemical reaction alkali way.