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 4 Estimated gas reserves of structural traps in the lower assemblage of the southern margin.

Trap Formation Trap area/km2 Gas reserve/108 m3 Hutubi anticline K1q 72.0 366 J3k 72.0 2 851 Tugulu anticline K1q 26.9 118 J3k 26.9 1 259 Dongwan anticline K1q 109.5 556 J3k 109.5 5 124 Anjihai anticline K1q 133.7 566 J3k 133.7 2 061 Manasi anticline K1q 140.9 621 J3k 140.9 6 593 North Qigu No.3 anticline K1q 31.3 138 J3k 31.3 282 East Tugulu anticline K1q 78.9 347 J3k 78.9 994 Khorgos anticline K1q 21.9 93 J3k 21.9 111 North Manasi anticline K1q 71.5 315 J3k 71.5 386 Southeast Tugulu anticline K1q 72.3 318 J3k 72.3 390 South Hutubi anticline K1q 54.5 240 J3k 54.5 392 East Hutubi anticline K1q 15.3 67 J3k 15.3 28