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. 5. Tight reservoir types and their pore-throat structure characteristics in typical continental basins in China. (a) Quantou Formation type I tight reservoir, Songliao Basin; (b) Quantou Formation type II tight reservoir, Songliao Basin; (c) Quantou Formation type III tight reservoir, Songliao Basin; (d) Quantou Formation type IV tight reservoir, Songliao Basin; (e) Qingshankou Formation type I tight reservoir, Songliao Basin; (f) Qingshankou Formation type II tight reservoir, Songliao Basin; (g) Qingshankou Formation type III tight reservoir, Songliao Basin; (h) Qingshankou Formation type IV tight reservoir, Songliao Basin; (i) Lucaogou Formation type I tight reservoir, Jimsar sag, Junggar Basin; (j) Lucaogou Formation type II tight reservoir, Jimsar sag, Junggar Basin; (k) Lucaogou Formation type III tight reservoir, Jimsar sag, Junggar Basin; (l) Lucaogou Formation type IV tight reservoir, Jimsar sag, Junggar Basin; (m) Baikouquan Formation type I tight reservoir, Mahu area, Junggar Basin; (n) Baikouquan Formation type II tight reservoir, Mahu area, Junggar Basin; (o) Baikouquan Formation type III tight reservoir, Mahu area, Junggar Basin; (p) Baikouquan Formation type IV tight reservoir, Mahu area, Junggar Basin.