Major breakthrough of Well Gaotan 1 and exploration prospects of lower assemblage in southern margin of Junggar Basin, NW China

DU Jinhu,ZHI Dongming,LI Jianzhong,YANG Disheng,TANG Yong,QI Xuefeng,XIAO Lixin,WEI Lingyun

Table 3 Estimated oil reserves of structural traps in the lower assemblage of the southern margin.

Trap Formation Trap area/km2 Oil reserve/104t Gaoquan anticline K1q 71.4 5 138 J2t 71.4 18 702 J1s 45.4 9 147 J1b 48.4 10 657 South Gaoquan fault nose K1q 44.3 3 188 J2t 44.3 11 604 J1s 26.6 5 360 J1b 26.6 5 857 North Tuositai fault nose K1q 34.9 2 511 J2t 34.9 9 141 J1s 20.1 4 050 J1b 20.1 4 426 North Gaoquan anticline K1q 16.2 1 166 J2t 16.2 2 798 Dunan anticline J2t 18.2 4 767 Xihu anticline J2t 19.3 2 222 Dushanzi anticline J2t 97.1 25 433 J1s 58.3 11 747 J1b 58.3 12 837 Huoxi anticline J2t 31.6 2 729 West Gaoquan fault nose K1q 12.6 907 J2t 12.6 3 300