摘要
大庆油田利用主力油层聚合物驱成熟配套技术,在室内研究的基础上,进行了二类油层聚合物驱矿场试验。总结试验区的动态开发特点,分析存在的问题,形成了以聚合物驱控制程度为核心,以限制聚合物驱对象、细分层系、缩小井距、优化聚合物驱方案为主要内容的二类油层聚合物驱总体开发原则,通过工业化应用,深入研究了二类油层聚合物驱含水率变化特征,通过研究含水率曲线形态,将二类油层含水变化特征分为5种类型,其中圆底锅型含水率下降幅度较大,含水率下降了22.9个百分点,阶段提高采收率为7.4%,聚合物驱效果好。
Field experiment of polymer flooding in type Ⅱ oil layers was made based on laboratory study using the mature support technology of polymer flooding in major oil layers. Development property of experiment behavior was summarized to analyze the issues. General production principle of polymer flooding in type Ⅱ oil layers was formed:the key is control degree of polymer flooding,the main content is polymer flooding object control,subdivision of reservoir,well spacing reduction and polymer flooding project optimization. Through industrial scale application,change properly of water cut of polymer flooding oil wells in type Ⅱ oil layers was studied deeply. Based on the decline curve of water cut,il was divided into five types,in which round kettle type has good polymer flooding effect and large decrease of water cut with the 22.9 percent decreased of water cut and 7.4% of interval EOR.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2008年第6期71-72,共2页
Petroleum Geology and Recovery Efficiency
关键词
二类油层
聚合物驱油
见效特征
大庆油田
type Ⅱ oil layers
polymer flooding,response property
Daqing Oilfield
