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Discovery and geological knowledge of the large deep coal-formed Qingyang Gas Field, Ordos Basin, NW China
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FU Jinhua,WEI Xinshan,LUO Shunshe,ZUO Zhifeng,ZHOU Hu,LIU Baoxian,KONG Qingfen,ZHAN Sha,NAN Junxiang
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Table 2 Carbon isotope composition of natural gas components in the Upper Paleozoic of the Ordos Basin.
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| Exploration zone | Well No. | Horizon | δ13C/‰ | | C1 | C2 | C3 | | Longdong area | Long4 | Shan 1 Member | -28.80 | -23.00 | -25.50 | | Long 7 | He 8 Member, Shan 1 Member | -25.90 | -33.60 | -32.90 | | Qingtan1 | Shan 1 Member | -29.50 | -29.80 | -30.70 | | Long 5 | Shan 1 Member | -27.40 | -33.40 | -31.80 | | Qing1-13-65 | Shan 1 Member | -24.10 | -27.50 | -30.30 | | Gaoqiao | Shan371 | He 8 Member, Shan 1 Member | -32.45 | -34.28 | -30.13 | | Su127 | He 8 Member | -28.99 | -33.70 | -34.06 | | Lian32 | He 8 Member | -32.30 | -30.30 | -30.46 | | Shan 316 | Shan 2 Member, Benxi Formation | -29.11 | -36.43 | -35.20 | | Shan 339 | Shan 2 Member | -29.06 | -34.20 | | | Yichuan-Huanglong | Yi7 | Taiyuan Formation | -35.14 | -36.18 | -33.70 | | Yi8 | Shan 2 Member | -31.28 | -31.39 | -30.84 | | Shuang23 | Taiyuan Formation | -35.71 | -23.67 | -22.63 | | Shuang34 | He 8 Member | -37.22 | -27.48 | -26.18 | | Sulige | Tao46 | Shan 2 Member | -33.81 | -22.99 | -22.58 | | Su 353 | He 8 Member, Shan 1 Member | -24.08 | -25.57 | -28.70 | | Shan 388 | Shan 1 Member | -28.76 | -23.21 | -25.13 | | Su 120 | Shan 1 Member | -28.30 | -21.71 | -22.30 | | Su 124 | He 8 Member | -29.88 | -23.39 | | | Su134 | He 8 Member | -32.49 | -23.61 | -25.32 |
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