摘要
哈萨克斯坦肯基亚克油田盐上边水稠油油藏经过多年衰竭式开采,边水突进,导致油井含水率高,产量低,采出程度低,亟待转换开发方式。为此,开展了热水驱、聚合物驱、饱和蒸汽驱、过热蒸汽驱的室内物理模拟和数值模拟对比研究。结果表明,对盐上油藏中侏罗统油层采用300℃(过热度为50℃)过热蒸汽开发效果最好,驱油效率最高可达到91.7%,对其开发指标进行数值模拟,预测采出程度最高可达47.96%。过热蒸汽吞吐现场先导试验也取得了显著的效果,单轮次吞吐平均单井增油量为1700t,平均含水率下降了13.6%。可见,过热蒸汽驱是适合该油藏储层特征和当前油藏状态的最佳开发方式。
Kenkiyak oilfield is characterized by high-viscosity oil,strong heterogeneity,shallow burial,high permeability and porosity,and huge edge water.After 40 years of depletion development.the serious heterogeneous characteristic and water invasion made the water-cut of oil wells very high.but recovery factor of the reservoir was very low.The production performance has been inefficient for a long time.In response to this problem,the current development mode should be switched for high efficiency.Through physi-cal and numerical simulation study on hot water flooding.polymer drive.saturated steam drive.superheat steam drive,the results showed that 300℃ superheated steam flooding can largely enhance oil recovery which may reach 47.46 percent on the Middle Ju-rassic reservoir.As a result,the superheated steam injection is most suitable for the development of the reservoir.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2010年第2期91-94,共4页
Petroleum Geology and Recovery Efficiency
基金
中国石油天然气集团公司攻关课题"海外非常规油藏开发潜力分析与最优开发方式研究"(07G60201)
关键词
稠油油藏
过热蒸汽驱
饱和蒸汽驱
热水驱
聚合物驱
肯基亚克油田
ordinary heavy oil
superheat steam drive
saturated steam drive
hot water drive
polymer drive
Kenkiyak oilfield
