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箕状凹陷斜坡带油藏分布特征与描述模式——以东营凹陷南斜坡西部为例 被引量:3

Distribution characteristics and descriptive models of slope belt reservoir in dustpan-like sag——taking southern slope in southwest of Dongying sag as an example.
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摘要 箕状凹陷斜坡带按构造、储集层及油藏等特征分为单斜带与断裂带。单斜带位于斜坡带的中上部 ,距物源近、储集层物性差 ,油藏类型以地层 -岩性稠油藏为主 ,油藏描述重点是储集层的分布与变化特征 ;断裂带位于斜坡带的中下部 ,多由原始坡度继承发育而来 ,其上倾边界一般为洼陷的外边界 ,物源经单斜带运移至此成为主要的沉积带 ,其物性较单斜带有所改善 ,储集层较厚 ,沉积构造发育 ,以构造油藏为主 ,油藏描述的重点是构造及微构造的确定。断裂带是斜坡带勘探与开发的主要构造单元。该文总结了东营凹陷南斜坡西南部油藏的分布规律及控制因素 ,以断裂带的金 31块油藏为例 ,对斜坡断裂带油藏进行了系统分析解剖 。 Slope belt of dustpan?like sag may be divided into monoclinal belt and fracture belt as the characteristics structure, reservoir and oil pool etc. Monoclinal belt locates at middle?upper part of slope belt and closes to the source with poor reservoir physical properties. The reservoir type takes stratigraphic?lithologic heavy oil pool as dominant factor. Reservoir description focuses on the distribution and variation features of reservoir. Fracture belt locates at middle?lower part of slope belt and developed from the original slope mainly. It's updip boundary is always the external boundary of sag. The sources migrated from monoclinal belt became the major deposition zone. Structural oil pool is the major one with improved physical properties, thick reservoir and developed sedimentary structure. The focal point of the reservoir description is the determination of the structure and microstructure. The fracture belt is the major tectonic element in exploration and development of the slope belt. Distribution rule and control elements of the oil reservoirs in southwest of south slope in Dongying sag are summarized in this paper, and the oil reservoirs of slope fracture belt are systematically analyzed taking Jin 31 block oil pool of the fracture belt as an example, then a general description model of this type of oil reservoir is given.
出处 《油气地质与采收率》 CAS CSCD 2001年第2期25-28,共4页 Petroleum Geology and Recovery Efficiency
关键词 箕状凹陷 斜坡带 断裂带 油藏描述 东营凹陷 dustpan-like sag slope belt fracture belt reservoir description Dongying sag
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