摘要
古城油田B125区Ⅴ2-5油组原油粘度高、非均质性强,水驱后水窜严重,水驱效率低,急需进行开采方式转换研究与试验。为了适应开发需要,开展了表面活性剂驱技术研究与先导性试验。3个井组的矿场先导性试验表明,表面活性剂可使油水界面张力降至10-1mN/m数量级,驱油效率可在水驱的基础上提高15个百分点,有利于提高最终采收率,改善开发效果。
Because in V2-5 formation of Block B125 in Gucheng Oilfield,crude oil viscosity was high,heterogeneity was high and water channeling was severe with low waterflooding efficiency after waterflooding was conducted,improvement and study of production methods were badly needed.For the needs of oil production,the techniques of surfactant flooding were investigated and a pilot test was carried out.The results from field pilot test of 3 well groups indicate that the interfacial tension can be reduced to 10-1 mN/m,15 percent of oil displacement efficiency can be raised based on waterflooding by using the surfactant,it is beneficial for enhancing oil recovery and improving production efficiency.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2007年第4期117-118,128,共3页
Journal of Oil and Gas Technology
基金
中国石油化工股份有限公司科技攻关项目(P06050)
关键词
化学驱
注表面活性剂
表面张力
驱油效率
先导性试验
chemical flood
surfactant flood
surface tension force
oil displacement efficiency
pilot test
