聚合物凝胶调剖体系的段塞组合优化及矿场应用  

Optimization of Slug Combination of Polymeric Gel Profile Control System and Its Application

作　　者：谭良柏[1] 罗跃[2] 杨欢[2] 任朝华[2] 张謦文[2] 孔玉明[2] 

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《石油天然气学报》2012年第12期140-142,10,共3页Journal of Oil and Gas Technology

摘　　要：为了改善常规调剖堵水的不足,进行了室内逐级深部调剖研究。注入不同浓度、不同段塞比例的聚合物凝胶、表面活性剂复合段塞调驱体系,考察各组试验提高采收率和封堵的情况。结果表明:强凝胶+表面活性剂+中强凝胶+弱凝胶+表面活性剂+强凝胶封口的段塞组合提高采收率幅度最大。调驱后效果明显,调驱井组的日产油由39.2t上升到58.9t,含水由72.5%降至67.3%。截止到2011年底,已累计增油1965.4t。In order to improve the conventional profile control and water plugging a deep profile control was carried out step by step in laboratory.A profile control and flooding system with different concentrations and different proportions of polymer gel,complex surfactant slug was injected to study situations of enhanced oil recovery and sealing properties of the polymer gel in each group.Experimental results show that the combination of sealing slug with strong polymer gel + surfactant + middle-strong polymer gel + weak polymer gel + surfactant + strong gel sealing flooding system has the best effect of enhanced oil recovery.It obtains obvious effect in field application,daily production increases from 39.2t to 58.9t,water-cut decreases from 72.5% to 67.3%.By the end of 2011,accumulated oil increment is 3500t.

关 键 词：深部调剖 聚合物凝胶 段塞优化 封堵 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]