Limits and grading evaluation criteria of tight oil reservoirs in typical continental basins of China

ZHOU Nengwu,LU Shuangfang,WANG Min,HUANG Wenbiao,XIAO Dianshi,JIAO Chenxue,WANG Jingming,TIAN Weichao,ZHOU Lei,CHEN Fangwen,LIU Wei,WANG Zhixuan

Fig. 6. Tight oil reservoir types and physical property grading maps of typical continental basins in China. (a) Tight sandstone in the Qingshankou Formation, Songliao Basin; (b) Tight sandstone in the Quantou Formation, Songliao Basin; (c) Mixed rock in the Lucaogou Formation, Jimsar sag, Junggar Basin; (d) Tight glutenite in the Baikouquan Formation, Mahu area, Junggar Basin; (e) Glutenite in the Kongdian Formation Member 1 - Shahejie Formation Member 4, Jinxian Sag, Bohai Bay Basin; (f) Siltstone in the Funing Formation, North Jiangsu Basin.