摘要
双河油田北块三采试验区块Ⅱ４－６、Ⅳ１－４层系储层岩石成分成熟度及结构成熟度均低，自生矿物及粘土矿物种类多，物性及孔隙结构参数变化大，储层微观非均质性及孔喉两极分化严重，微孔隙发育；储层孔隙结构在横向上变化大，微观油水分布形态多样，导致驱油效率低，开发难度大。储层以Ⅱ、Ⅲ类为主，Ⅱ４—６层系条件较差属中低储集类型，Ⅳ１—４层系储层条件较好为中等储集类型。
Both the compositional maturity and structural maturity of Ⅱ 4-6 and Ⅳ 1-4 reservoir rocks in the north Part of Shuanghe oilfield are relatively low, and the types of authigenic and clay minerats are various, pete-structural diameters and the size of pore-throats varies distinctly, microscopic anisotropy.is high and micro-potes developed wed. The considerable variation of reservoir POre structures in lateral diredion and Plenty of microdistributive pattern of oil and water lead to low oil-expulsion. The reservoirs mentioned above are predominatly type-Ⅱ and type-Ⅲ ones.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1994年第4期341-349,共9页
Oil & Gas Geology
