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

Table 1 Statistics on interpretation quality of Nandagang fault in Guantao Formation of Qikou sag.

Corrected position Seismic line Displacement of f1/m Displacement of f2/m Transformed displacement/m Separation/ m Ratio of displacement to separation Average ratio of displacement to separation Stage of fault interaction Segment growth point #1 L1646 172.18 172.18 128.65 1.34 1.70 Hard linkage L1650 141.06 141.06 89.50 1.58 L1654 178.23 178.23 82.00 2.17 Segment growth point #2 L1744 185.63 185.63 46.35 4.00 4.22 Hard linkage L1748 197.59 197.59 46.25 4.27 L1752 203.87 203.87 46.40 4.39 Segment growth point #3 L1920 253.65 253.65 67.10 3.78 3.75 Hard linkage L1924 241.21 241.21 68.65 3.51 L1928 273.08 273.08 69.25 3.94 Segment growth point #4 L2038 219.74 219.74 85.15 2.58 2.50 Hard linkage L2042 220.61 220.61 92.95 2.37 L2046 240.19 240.19 94.55 2.54 Neighboring position L2128 250.69 58.54 309.23 727.80 0.42 0.40 Transitional linkage L2132 237.50 65.20 302.70 792.70 0.38 L2136 276.54 39.16 315.71 819.40 0.39