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总结了胶态分散凝胶（CDG）体系在岩心中的吸附滞留特性。此CDG体系是由150mg／L部分水解聚丙烯酰胺与柠檬酸铝形成的交联聚合物体系。在岩心流动封堵实验中测定了CDG体系中各组分在岩心中的吸附滞留量，并与CDG体系在石英砂（100～180目）上的静态吸附结果相对照。结果表明，CDG体系在岩心中因吸附滞留引起阻力系数上升，其中的凝胶颗粒主要以机械捕集的形式滞留，吸附所占的比例很小；而未交联的柠檬酸酸铝主要以吸附的形式滞留。在本实验条件下，CDG凝胶颗粒的滞留量为102．8μg／g，AI的滞留量为0．88μg／g。注入8．64PVCDG，冲水后残余阻力系数达50左右。实验表明，CDG体系因其特殊的结构形态和吸附滞留特性，具有优于一般调剖剂的深部调创作用和液流改向能力。
The adsorption retention characteristics of colloidal dispersion gel (CDG) system in the core were summarized. This CDG system is a crosslinked polymer system formed from 150 mg / L partially hydrolyzed polyacrylamide and aluminum citrate. In the core plugging experiment, the adsorption and retention of each component in the core of the CDG system was measured and compared with the static adsorption results of the CDG system on quartz sand (100 ~ 180 mesh). The results show that the drag coefficient of CDG system increases due to adsorption and retention in the core. The gel particles mainly remain in the form of mechanical capture, and the proportion of adsorption is small. However, the uncrosslinked aluminum citrate mainly adsorbs Stranded in the form of. Under the experimental conditions, the retention of CDG gel particles was 102.8 μg / g and the retention of AI was 0.88 μg / g. Into 8.64PVCDG, after flushing the residual resistance coefficient of about 50. Experiments show that, because of its special structure morphology and adsorption retention characteristics, CDG system has better deep mediation effect and flow redirection ability than general profile control agent.