Research on Oil Accumulation Process of Lithologic Reservoir in Chang 8 Member of Yanchang Formation, Xifeng Oilfield

详细信息   

• 责任者：Liu Zhen (State Key Laboratory of Petroleum Resource and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Zhu Wenqi
• 刊名：Geoscience
• 出版年：2013
• 卷期：27(4)
• 关键词：岩性油气藏 ; lithologic reservoir ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.895-906
• 图表：9 illus., 36 refs.
• 分类号：1003
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

摘要

 
    

     Using quantitative methods, the evolution process of formations, geothermal field, hydrocarbon generation and drainage, diagenesis, porosity, accumulation times, traps and the driving force window are simulated, and the space-time matching of key accumulation factors are further analyzed. The results show that beginning form the Early Cretaceous, the regional structural subsidence and incidental significant geothermal event triggered the generation and drainage of source rocks. Dissolution of organic acid before accumulation period dramatically improved the porosity of Chang 8 reservoir which provides enough space for oil accumulation.