分流河道储层内微观剩余油分布及影响因素Microscopic distribution of remaining oil and its influential factors in distributary channel reservoirs
张雁,冯殿辉
ZHANG Yan1,FENG Dian-hui2(1.Geosciences Institute of Daqing Petroleum Institute
摘要(Abstract)：
在河流相储层中,由于微观孔隙结构不同,致使注水开发油田中水驱波及区域内尚残留着大量的剩余油,研究这部分油的存在位置、形态及其成因对油田的稳产具有重要意义。利用薄片、电镜、压汞等资料详细研究了杏南油田葡一组分流河道砂体的微观孔隙特征,并划分了微观孔隙结构类型,在此基础上,研究了分流河道储层内不同孔隙结构类型中剩余油的形态及分布规律,探讨了剩余油分布的影响因素。研究结果表明:水驱开发早期剩余油多以网络状、簇状为主,开发晚期则以斑块状、孤滴状、附着状及油水混相为主;影响剩余油的主要因素为岩石表面润湿性、微观孔隙结构、填隙物成分、含量及油水粘度比等。
Microscopic pore configurations differ a lot in fluvial facies reservoirs,as a consequence of which,large amount of residue oil still remain in the water swept area after water flooding,hence studies on the emplacement,conformation and origination of this kind of oil are of great importance to stable production of oil field.a comprehensive study focused on the microscopic pore features of the distributary channel sandbodies in Pu-I Formation,Xingnan Oilfield has been conducted,integrating thin section,electron microscope and mercury injection data,furthermore,identify microscopic pore configuration types.Based on the above researches,the conformation and distribution of remaining oil in different pore configurations in distributary channel have been studied as well as the influential factors on remaining oil distribution.
关键词(KeyWords)：
微观剩余油;分流河道砂体;孔隙结构
microscopic remaining oil;distributary channel sandbody;pore configuration
基金项目(Foundation):
作者(Author):
张雁,冯殿辉
ZHANG Yan1,FENG Dian-hui2(1.Geosciences Institute of Daqing Petroleum Institute
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