摘要
为研究强碱三元复合驱对储层的伤害，了解强碱体系是否造成储层内部结垢，对位于大庆油田杏二区中部强碱三元复合驱工业性试验区注三元复合体系前后分别钻取的2口密闭取心检查井的同层位岩心进行了对比检测研究。2口检查井岩心的X-射线衍射谱图形一致，特征衍射峰的形状、位置对应较好；能谱结果显示三元体系驱替后的岩心中钙镁元素没有发生聚集。表明三元复合驱体系对储层的伤害很小，三元复合体系驱替后储层孔道内没有生成堵塞性钙镁结垢。
In order to study the formation damage and its possible internal scaling caused by strong ASP flooding, the contrasts and tests for the reservoir cores are conducted within the same oil layer of the two closed coring and inspecting wells respectively drilled before and after the flooding in Xingerzhong pilot area of Daqing 0ilfield. The x-ray diffraction pattens of the cores are consistent, the shapes and the positions of the characteristic diffraction peaks are pretty favorite ; no aggregations of calcium and magnesium elements are detected by energy dispersive spectrometer in ASP flooded cores. The study results show that the flooding system has a little damage to the formations and there are no above plug scaling within the reservoir pores and channels after the flooding.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2012年第5期137-141,共5页
Petroleum Geology & Oilfield Development in Daqing
关键词
强碱三元复合驱
储层岩心
地层伤害
结垢
大庆油田
strong alkali-surfactant-polymer flooding （ASP）
reservoir core
formation damage
scaling
Daqing Oilfield
