摘要
通过开展并联双管长岩心实验,分析了水驱、氮气驱、气一水交替驱、氮气泡沫调驱、聚合物段塞+氮气泡沫调驱等方式的原油采出程度及含水率的变化程度,为QK17-2油田中一高含水期提高采收率研究提供了可靠依据。结果表明,聚合物段塞+氮气泡沫调驱的驱油效果最好,岩心驱替的采出程度比水驱的采出程度提高13.39%,调驱能够有效改善层间非均质性对原油采出程度的影响,提高原油采收率。
By means of the experiments of parallel double-barreled long core, the interval oil recoveries and changed degrees of the water cut for water flooding, N2 flooding, NJwater alternative injection, N2 foam adjustment flooding and polymer slug ＋ N2 foam adjustment flooding are analyzed, thus the reliable evidences for the EOR of Oilfield QK17-2 at the stages of medium and high water cuts are provided. The results show that the oil swept effi- ciency of polymer slug ＋ N2 foam adjustment flooding is the best, the recovery of the flooded core is 13.39% higher than that of the water flooding, it can be proved that the profile controlling and flooding is effective to reduce the in- fluences of the interbedded heterogeneity and moreover enhance the oil recovery.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2013年第4期121-124,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
国家科技重大专项(2008ZX05000-030)
关键词
QK17—2油田
采收率
泡沫调驱
长岩心
实验
Oilfield QK17-2
recovery
foam adjustment/profile-controlling and flooding
long core
experiment
