大庆石油地质与开发2024，Vol.43Issue(6)：39-48,10.DOI:10.19597/J.ISSN.1000-3754.202307045
松辽盆地榆树林油田葡萄花油层微油藏成藏主控因素与模式
Main controlling factors and accumulation patterns of micro-reservoirs in Putaohua Reservoir of Yushulin Oilfield in Songliao Basin
摘要
Abstract
In view of the problems of small scale,multiple types and unclear main controlling factors of reservoirs in Putaohua Reservoir of Yushulin Oilfield,based on classification and distribution analysis of reservoirs in various structural units,hydrocarbon generation and expulsion modeling,paleostructure restoration and migration model-ing are conducted to analyze main controlling factors for accumulation such as relationship between fault activity pe-riod and accumulation,and effective reservoirs,clarifying accumulation patterns of micro-reservoirs in Putaohua Reservoir of Yushulin Oilfield.The results show that:Putaohua Reservoir in studied area develops 5 types of reser-voirs including 3 types of fault reservoirs,and lithologic reservoirs and fault-lithologic reservoirs.The formation of micro-reservoirs is coupling controlled by 4 factors of"source rock,fault,ridge and sandstone".High-maturity source rocks with high hydrocarbon expulsion intensity controls macro-distribution of reservoirs.Oil and gas migrate along paleostructural ridges towards high parts of Shangjia and Shangnan paleo-uplifts formed before large-scale ac-cumulation in"one direction and two paths".Type Ⅰ faults and Type Ⅱ faults opened in the main accumulation pe-riod are vertical transport paths for oil and gas.Effective reservoirs along migration paths are favorable targets for hy-drocarbon accumulation.3 kinds of accumulation patterns are established,including"superimposed source rock and reservoir,vertical faults transport,and continuous accumulation of favorable sandbodies"in western syncline area,"adjacent source rock and reservoir,lateral migration and accumulation of connected faults-sandbodies,and relative enrichment of effective reservoirs"in central slope area,and"separated source rock and reservoir,lateral migration and accumulation of distal faults-sandbodies,and effective reservoirs accumulated on ridges"in eastern uplift area.The research provides theoretical guidance for further exploration and development of Putaohua Reser-voir in Yushulin Oilfield.关键词
微油藏/主控因素/葡萄花油层/榆树林油田/松辽盆地Key words
micro-reservoir/main controlling factors/Putaohua reservoir/Yushulin oilfield/Songliao Basin分类
能源科技引用本文复制引用
刘强..松辽盆地榆树林油田葡萄花油层微油藏成藏主控因素与模式[J].大庆石油地质与开发,2024,43(6):39-48,10.基金项目
国家科技重大专项"松辽盆地致密油开发示范工程"(2017ZX05071). （2017ZX05071）
