摘要
利用岩石薄片、铸体薄片、扫描电镜和压汞资料 ,对孤岛油田馆上段储层微观结构进行了全面研究。馆上段的孔隙结构可以分为 4种类型 ,以Ⅱ ,Ⅲ类孔隙结构为主 ,微观非均质性严重。沉积环境和成岩作用是影响储层微观结构的主要地质因素 ,经过长期注水开发 ,在一定程度上改善了储层微观结构。储层孔喉分布和孔隙结构的非均质性是影响孤岛油田驱油效率的主要因素之一 ,岩石润湿性的分布不均匀是影响驱油效率的另一重要因素。
The rock sections, cast sections, scanning electron microscope and mercury injection curve of Gudao oilfield were observed and analyzed to study the microstructural characteristics of reservoir formation. Four types of reservoir pore structures are presented. The results show that the reservoir pore structures are mainly type Ⅱ and type Ⅲ, and micro heterogeneity of the reservoir formation is distinct. Sedimentary environment and diagenesis are the main factors affecting the microstructure of the reservoir rocks, which was improved by injecting water development. The heterogeneity of pore structure is a main factor affecting oil displacement efficiency. The uneven distribution of rock wettability is another main factor affecting oil displacement efficiency.
出处
《石油大学学报（自然科学版）》
CSCD
北大核心
2002年第3期47-51,54,共6页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
国家重点基础研究发展规划项目 (G19980 40 80 1)
关键词
孤岛油田
储层
微观结构特征
驱油效率
影响
非均质性
岩石润湿性
Gudao oilfield
reservoir
rock microstructure
heterogeneity
rock wettability
oil displacement efficiency
