Study of the main controlling factors of shale oil enrichment in the Zhanhua Sag
SU Siyuan1,2, JIANG Zhenxue1,2, NING Chuanxiang1,2, WANG Zhi1,2, LI Zheng3, ZHU Rifang3
1 State Key Laboratory of Petroleun Resources and Prospecting, China University of Petroleum-Beijing, Beijing 102249, China 2 Unconventional Natural Gas Institute, China University of Petroleum-Beijing, Beijing 102249, China 3 Shengli Oil Company, SINOPEC, Dongying 257015, China
By using microscopy, pyrolysis, helium porosity, pulse permeability and XRD whole rock mineral analysis, the main controlling factors of shale oil enrichment were studied in the Zhanhua Sag, Jiyang Depression, Bohai Bay Basin. The results show that the hydrocarbon generation potential and storage capacity are the two important factors controlling shale oil enrichment. For hydrocarbon generation, the abundance, type and maturity of organic matter are the decisive factors. For hydrocarbon storage, the development of laminar texture and microfractures is beneficial to improving the reservoir capacity of shale. The laminar organic-rich lithofacies has excellent hydrocarbon generating ability and reservoir capacity so it is the most favorable lithofacies for shale oil exploration. Laminar texture, overpressure and microfractures could improve the flow ability of shale oil. In addition, brittle minerals and overpressure are conducive to the fracturing exploration.
Key words：
shale oil enrichment main control factors hydrocarbon generating ability reservoir capacity
蘇思遠(yuǎn)，姜振學(xué),，寧傳祥,，王智，李政,，朱日房. 沾化凹陷頁巖油富集可采主控因素研究[J]. 石油科學(xué)通報(bào), 2017, 2(2): 187-198. SU Siyuan, JIANG Zhenxue, NING Chuanxiang, WANG Zhi, LI Zheng, ZHU Rifang. Study of the main controlling factors of shale oil enrichment in the Zhanhua Sag. Petroleum Science Bulletin, 2017, 2(2): 187-198.
