用毛管压力资料求取原始含油饱和度的方法  

Method of applying capillary pressure data to calculate initial oil saturation

作　　者：赵国欣[1] 朱家俊[2] 关丽[2] 

机构地区：[1]浙江大学理学院,浙江杭州310027 [2]中石化胜利油田分公司地质科学研究院,山东东营257015

出　　处：《中国石油大学学报（自然科学版）》2008年第4期38-41,共4页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中国石化'十条龙'项目(p01013)

摘　　要：利用胜利油田实际储层测试数据,分析了压汞过程中汞的湿润性、储层孔隙结构及流体性质、油气成藏动力构成的多样性,以及用毛管压力资料求取原始含油饱和度存在的问题。结果表明,在胜利油区油气成藏时储层的孔隙度要比现今储层的孔隙度大6%左右,油气成藏时的密度、界面张力普遍比现今的小,油气成藏的动力除浮力以外还包含地层的高压等因素。研究认为,因地质运动变化,油藏的储层孔隙结构、流体参数发生较大变化,用压汞法取得的毛管压力资料不能准确求取原始含油饱和度。Based on the test data of actual reservoir in Shengli Oilfield, the wettability of mercury in the course of mercury intrusion, the change of reservoir pore configuration, fluid property, varieties of composition of oil-gas accumulation power, were analyzed. The problem of applying capillary pressure data to calculate initial oil saturation was made out. The results show that as pool forming, the porosity is 6% more than the porosity of reservoir today, the density and interfaeial tension of pool forming are commonly less than those of today. The accumulation power includes the formation high pressure except for uplift pressure. The reservoir pore configuration and fluid parameters have changed greatly because of geology movement. Applying capillary pressure data to calculate initial oil saturation is inaccurate.

关 键 词：毛管压力 孔隙结构 地质运动 流体性质 成藏动力 含油饱和度 

分 类 号：TE122.23[石油与天然气工程—油气勘探]