大庆油田油水相对渗透率统计规律及其应用  

Statistical regularity of oil-water relative permeability in Daqing Oilfield

作　　者：王曙光[1] 赵国忠[1] 余碧君[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《石油学报》2005年第3期78-81,85,共5页Acta Petrolei Sinica

基　　金：中国石油天然气股份有限公司重点科技项目(030116)"大庆喇萨杏油田特高含水期水驱优化调整技术研究"部分成果。

摘　　要：以大庆油田617个天然岩心测量的非稳态油水相对渗透率曲线为样本,统计得到了束缚水饱和度、残余油下水饱和度、束缚水下油相相对渗透率、残余油下水相相对渗透率与有效渗透率间的统计关系和平均相对渗透率曲线,给出了利用油水相对渗透率统计规律计算不同渗透率储层岩石代表性的油水相对渗透率曲线的方法。根据相对渗透率的统计规律,用Buckley-Leverrett水驱理论和油藏数值模拟方法,研究了大庆油田不同渗透率级别的均质油藏,在250m和500m井距下水驱开采的含水上升规律。Statistical formulas of connate water saturation, water saturation at residual oil, oil relative permeability at connate water saturation, water relative permeability at residual oil with the effective permeability and an average relative permeability curve were obtained on the basis of oil-water relative permeability curves of 617 natural cores in Daqing Oilfield by unstable state experiment. A computing method for some representative relative permeability curve of the reservoir rock with varying permeability was proposed. According to the relative permeability statistical regularity, the water-cut rising regularities of water-drive homogenous reservoirs with well distances of 250 m and 500 m and varying permeability in Daqing Oilfield were investigated by Buckley-Leverrett theory and reservoir numerical simulation.

关 键 词：砂岩储层 相对渗透率 统计规律 油藏数值模拟 含水率变化 大庆油田 

分 类 号：TE312[石油与天然气工程—油气田开发工程]