聚合物微球是油田广泛应用的一种能够提高水驱采收率的深部调剖剂,为了更好地进行效果分析和调整,针对A油田区块油藏地质与开发特征以及聚合物微球驱后生产动态表现进行了归类分析,考察其油藏适应性及见效特征.主要从地质因素、微球匹配因素、工程因素3个方面对聚合物微球驱适应性进行了分析,结果表明含水率为30%~50%的孔隙裂缝型井组是主要挖潜对象,进行措施方案设计时应考虑微球与油藏孔隙吼道半径和地层水矿化度的匹配关系,段塞用剂的质量浓度和体积需要实验室专门评价.基于低渗透油藏聚合物微球适应性分析建立了油藏筛选标准,地层水矿化度、油藏渗透率、油层厚度等主要地质开发指标给出了具体的筛选指标界限,为待选区块发挥聚合物微球驱最大效果提供了保证.%Polymer microspheres are used extensively in oil field which can improve water flooding efficiency of deep profile control agent .In order to better analyze and adjust the effect ,an oilfield reservoir geology and characteristic of exploitation and dynamic performance of polymer microspheres after polymer flooding production were classified analysis .The reservoir adaptability and effective characteristics were also investigated .The adaptability of polymer microspheres flooding was analyzed mainly from geological factors ,microspheres matching factors ,and engineering factors .The results showed that the main object of tapping was the pore fracture type well group which the moisture content was 30% ~50% .The matching relations among microspheres and porous reservoir roar radius and the salinity of formation water were considered ,the concentration and amount of slug agents need to evaluate specially .The reservoir screening criteria was established based on the adaptability analysis of low permeability reservoir polymer microspheres . The specific screening index limit of formation water mineralization degree ,reservoir permeability ,and reservoir thickness were given ,it provided great insurance for selective microsphere polymer flooding block .
展开▼
