Distribution and genesis of mercury in natural gas of large coal derived gas fields in China

LI Jian,HAN Zhongxi,YAN Qituan,WANG Shuying,GE Shouguo

Table 3 Types according to mercury content in natural gas and statistics on related parameters of gas fields in eight major gas-bearing basins in China.

Basin Gas field Production layer depth/m Formation Lithology Gas field type δ13C2/‰ Natural gas type Songliao Xunshen 3 268-3 705 K1yc, K1d Sand, volcanics H -34.0 - -31.1 Coal derived Changshen 3 498-3 809 K1yc, K1d Sand, volcanics H -28.8 - -26.3 Coal derived Dehui 2 316-2 328 K1sh Volcanics H -34.8 - -26.3 Coal derived Shuangtuozi 1 950-2 073 K1q Sand M -29.1 - -24.3 Coal derived Xiaohelong 613-1 978 K1q Sand L -28.9 - -24.8 Coal derived Lamadian 600-660 K2n Sand L -39.8 - -36.6 Coal derived Honggang 540-1 229 K2n, K2m Sand L -37.4 - -33.3 Oil derived Wanjinta 1 815-1 313 K1q Sand L Carbon dioxide Tarim Kela2 3 499-4 021 K, E Sand H -19.4 - -17.8 Coal derived Dina2 4 597-5 686 E Sand H -23.3 - -20.9 Coal derived Yaha 4 947-5 790 E Sand H -23.9 - -22.6 Coal derived Kekeya 2 983-3 949 E Sand M -26.6 - -25.7 Coal derived Yingmai 4 452-5 389 K, E Sand M -20.7 - -24.0 Coal derived Ake 3 250-3 345 K Sand L -21.9 - -20.2 Coal derived Hetianhe 1 931-2 272 O, C Sand, carbonate L -34.6 - -30.9 Oil derived Tazhong 3 489-4 973 O, C Sand, carbonate L -37.8 - -35.1 Oil derived Jinan4 4 379-4 773 T Sand L -34.2 Oil derived Bohai bay Nanbu 4 673-4 689 Es Basalt H -24.4 Coal derived Banqiao 4 917-4 967 O2f, O2s Carbonate H -26.8 - -26.6 Coal derived Suqiao 4 468-4 856 O2f, O2s Carbonate H -25.9 Coal derived Wangguantun 4 515-4 580 O Carbonate L -25.4 Coal derived Guxinzhuang 3 167-3 307 O2sm Carbonate L Transitional Liuquan 1 500-1 849 Es Sand L -36.4 - -30.0 Oil derived Huanxiling 2 351-3 042 Es Sand M -28.1 Transitional Rongxingtun 1 715-1 983 Es, Ed Sand L -27.7 - -24.7 Coal derived Gaosheng 1 400-1 497 Es Sand L -34.8 - -32.3 Oil derived Ordos Sulige 3 288-3 623 O1m—P2x Sand, carbonate H -24.4 - -23.2 Coal derived Yulin 2 677-3 255 O1m—P2x Sand, carbonate M -26.3 - -23.4 Coal derived Shenmu 2 383-2 845 P1t—P2x Sand L -27.2 - -22.9 Coal derived Zizhou 1 926-2 713 P1s Sand, carbonate L -25.7 - -22.7 Coal derived Dongsheng 2 150-2 520 P2x Sand L -25.6 - -24.5 Coal derived Daniudi 2 350-2 750 P1s—P2x Sand L -25.3 - -23.8 Coal derived Jingbian 3 150-3 765 O1m Carbonate L -31.9 - -29.3 Oil derived Junggar Mosuowan 4 146-4 250 J1s Sand H -28.0 - -25.5 Coal derived Hutubi 3 536-3 614 E1z Sand L -23.0 - -21.6 Coal derived Mahe 2 410-2 480 E1z Sand L -25.0 - -24.4 Coal derived Sichuan Qiongxi 3 682-3 708 T3x Sand H -22.6 Coal derived Laoguanmiao 3 672-3 738 T3x Sand M -23.7 - -22.8 Coal derived Zhebachang 3 478-4 050 J1z, T3x Sand M -23.1 - -22.3 Coal derived Bajiaochang 2 544-3 352 T3x Sand M -27.8 - -26.1 Coal derived Hechuan 2 079-2 191 T3x Sand L -27.2 - -26.2 Coal derived Longgang 5 955-6 735 P2ch, T1f Carbonate L -27.0 - -25.3 Coal derived Weiyuan 1 911-3 000 ?C, Z Carbonate L -36.2 - -35.7 Oil derived Wolonghe 1 288-4 744 P2ch—T1j Carbonate L -35.7 - -28.0 Oil derived Wubaiti 4 232-5 045 P2ch, C2hl Carbonate L -33.6 - -31.0 Oil derived Tuha Wenxi 2 336-2 358 J2x, J2q Sand L -26.3 Coal derived Mideng 3 062-3 108 J2x Sand L -26.9 Coal derived Hongtai 2 013-2 067 J2q, J2s Sand L -25.9 Coal derived Qaidam Mabei 1 342-1 459 E31 Sand L -26.4 - -26.2 Coal derived Pingtai 1 158-1 161 E1+2 Sand L -25.1 - -21.4 Coal derived Sebei 709-1 372 Q Sand L -44.6 - -31.5 Biogas