Comprehensive evaluation on hydrocarbon-bearing availability of fault traps in a rift basin: A case study of the Qikou sag in the Bohai Bay Basin, China

FU Xiaofei,SONG Xianqiang,WANG Haixue,LIU Haitao,WANG Shunyu,MENG Lingdong

Fig. 1. Formation and evolution of Nandagang synthetic fault traps and Koucun antithetic fault traps in southern Qikou sag. (a) Present distribution of Nandagang synthetic fault and fault traps of Sha-1 Member; (b) Present throw-distance curve of Nandagang synthetic fault; (c) Present distribution of Koucun antithetic fault and fault traps of Sha-1 Member; (d) Present throw-distance curve of Koucun antithetic fault; (e) Distribution of Nandagang synthetic fault and fault traps of Sha-1 Member during the reservoir-forming period; (f) Throw-distance curve of Nandagang synthetic fault in the reservoir-forming period; (g) Distribution of Koucun antithetic fault and fault traps of Sha-1 Member during the reservoir-forming period; (h) Throw-distance curve of Koucun antithetic fault during the reservoir-forming period.