断块油田不同方式注氮气的研究与实践  

RESEARCH AND APPLICATION OF NITROGEN INJECTION BY USING DIFFERENT INJECTION MEANS IN FAULT-BLOCK OILFIELD

作　　者：左青山[1] 温鸿滨[1] 芦维国[1] 王杰[2] 

机构地区：[1]中石化胜利油田股份有限公司现河采油厂 [2]胜利油田有限公司地质科学研究院

出　　处：《钻采工艺》2007年第5期42-43,52,共3页Drilling & Production Technology

摘　　要：断块油田水驱开发后期都面临高含水的问题,如何降低含水提高油藏采收率一直是研究重点。着重在通过氦气对地层由膨胀降粘及长岩心水气交替物模实验基础上介绍了注氮气降水增油机理和在现河断块油田采用氮气吞吐、气水交替驱以及泡沫驱等不同注入方式下的矿场实践情况,分析了影响注气效果的因素,为断块油田注氮气提供一些经验。All the fault-block oilfields face the problem of high water-cut in later period of waterflooding development. So, how to lower water-cut and EOR are always the emphases of our research. This article introduces the water-cut reducing and stimulation mechanism of nitrogen injection as well as its field application in Xianhe fault-block oilfield by using different injection means such as nitrogen soak, nitrogen-water alternating flooding and foam flooding. It also analyzes the factors of affecting nitrogen injection results, which provides some experiences for nitrogen injection in fault-block oilfields in the future.

关 键 词：注氮气 氮气吞吐 交替驱 断块油田 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]