双城断陷南部洼漕含油层系成藏特征

双城断陷位于松辽盆地东南断陷带,近几年在双城南洼漕相继发现营四段、登娄库组含油储层,揭示了松辽盆地新的勘探方向。作为全新的勘探领域,该含油层系的成藏特征尚不清楚,制约了勘探部署。系统分析源岩、储层等要素研究其成藏特征,为勘探部署提供理论支持。研究认为:营四段暗色泥岩为本区的重要源岩层系,砂岩、砂砾岩、火山岩均发育好储层,具有三种成藏组合类型。

Reservoir forming characteristics of oil-bearing formations in the south depression of Shuangcheng fault rift

Shuangcheng fault depression was located in the southeastern fault zone of Songliao basin.oil reservoirs have been found in four section of Yingcheng formation and Denglouku formation,the new exploration direction of Songliao basin was displayed. As a new field of exploration,the reservoir-forming characteristics of the reservoirs were not clear, therefore, the exploration was restricted.In this paper,source rock, reservoir and other elements of reservoir characteristics were systematically researched, to provide guidance for exploration and deployment. The study said: the dark mudstone in four section of Yingcheng formation was the important source rocks in this area, good reservoir developed in sandstone、gravel、volcanic rocks,three types of reservoir formation were developed.