摘要
利用岩心、测井资料开展流动单元研究,采用定性与定量相结合的方法,选择渗流系数、存储系数和夹层密度等参数将克拉玛依油田三3区克下组分为Ⅰ,Ⅱ,Ⅲ和Ⅳ类流动单元,并详细描述了各类流动单元的孔隙结构特征、分布规律及渗流能力特征。按流动单元进行了数值模拟研究,并分析了各类流动单元与剩余油分布的关系。研究表明:不同流动单元具有不同的渗流特征,从Ⅰ到Ⅳ类流动单元,毛细管压力曲线阀压不断增加,进汞曲线平缓段不断变短,最小润湿相饱和度大幅上升,残余油时水相相对渗透率不断下降,渗流能力不断下降;剩余油分布与储层流动单元类型密切相关,Ⅰ类流动单元水淹严重,Ⅱ和Ⅲ类流动单元是剩余油分布的相对富集区,Ⅳ类流动单元水淹较弱,但剩余油储量低。
The flow units of the study area were divided into 4 types of Ⅰ,Ⅱ,Ⅲ and Ⅳ by means of qualitative method and quantitative method based on core and well logging data.In the research of flow units,the parameters of percolation factor,storage coefficient and interlayer density were chosen.The characteristics,spatial distribution and flow capacity of pore structure were described in detail.The relationships between remaining oil and flow units were researched by reservoir simulation according to the units. The ...
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2009年第1期30-33,113,共5页
Petroleum Geology and Recovery Efficiency
基金
教育部新世纪优秀人才资助项目“高含水油藏剩余油分布及措施研究”(NCET-06-0089)
关键词
流动单元
剩余油分布
砾岩油藏
相对渗透率曲线
克拉玛依油田
flow unit
remaining oil distribution
conglomerate reservoir
relative permeability curve
Keramayi Oilfield
