Research Article
Comparison on Rare Gas Geochemical Characteristics and Gas Originations of Kuche and Southwestern Depressions in Tarim Basin, China
Table 1
Molecular composition of hydrocarbon, nonhydrocarbon, and rare gases in some gas fields from the Kuche and Southwestern Depressions, Tarim Basin.
| Tectonic unit | Gas field | Strata | CH4 (%) | CO2 (%) | N2 (%) | C1-4 (%) | C1/C1+ | He (10-6) | Ne (10-6) | Ar (10-6) | Kr (10-6) | Xe (10-8) | References |
| Kuche Depression | Kela2 | E | 98.4 | 0.05 | 0.69 | 99.26 | 0.991 | 55 | 1.79 | 35 | 0.011 | 0.224 | [15] | K1, E | 97.5 | 0.60 | 0.37 | 99.03 | 0.985 | 41 | 3.34 | 19 | 0.005 | 0.167 | K1, E | 93.7 | 0.53 | 0.36 | 99.11 | 0.995 | 52 | 1.82 | 26 | 0.009 | 0.172 | K1, E | 98.1 | 0.70 | 0.56 | 98.74 | 0.994 | 53 | 1.77 | 20 | 0.007 | 0.166 | K1, E | 97.4 | 0.69 | 0.38 | 98.93 | 0.985 | 59 | 1.46 | 19 | 0.006 | 0.162 | K1, E | 98.3 | 0.69 | 0.58 | 98.73 | 0.994 | 53 | 1.73 | 27 | 0.009 | 0.180 | K1, E | 97.7 | 0.43 | 0.36 | 99.2 | 0.985 | 48 | | | | | This paper | K1, E | 97.5 | 0.64 | 0.38 | 98.97 | 0.984 | 52 | | | | | Dabei | K1bs | 95.8 | 1.42 | 0.44 | 98.15 | 0.976 | 59 | 1.73 | 18 | 0.008 | 0.204 | [23] | K1bs | 97.1 | 0.81 | 0.58 | 98.61 | 0.984 | 57 | 1.52 | 37 | 0.010 | 0.176 | K1bs | 94.8 | 1.27 | 1.67 | 97.03 | 0.977 | 57 | 1.55 | 15 | 0.007 | 0.151 | K1bs | 95.3 | 1.29 | 0.71 | 98.05 | 0.97 | 57 | 2.04 | 55 | 0.013 | 0.226 | K1bs | 94.3 | 1.27 | 0.99 | 97.71 | 0.965 | 60 | 1.74 | 24 | 0.007 | 0.143 | Dina | E | 87.3 | 0.59 | 1.58 | 97.83 | 0.892 | 38 | 1.18 | 25 | 0.008 | 0.144 | This paper | E | 88.5 | 0.33 | 1.11 | 97.95 | 0.904 | 40 | | | | | E | 89.1 | 0.36 | 1.08 | 98.34 | 0.906 | 33 | | | | | Keshen | K1bs | 97.9 | 0.61 | 0.86 | 98.53 | 0.994 | 36 | 2.05 | 30 | 0.008 | 0.151 | K1bs | 98.3 | 0.30 | 0.72 | 98.98 | 0.993 | 45 | 1.40 | 30 | 0.007 | 0.178 | K1bs | 97.9 | 0.78 | 0.70 | 98.45 | 0.994 | 32 | 1.30 | 23 | 0.008 | 0.165 | Southwestern Depression | Akemomu | K | 81.1 | 10.20 | 8.40 | 81.40 | 0.996 | 1046 | 10.26 | 342 | 0.042 | 1.081 | K | 80.8 | 11.30 | 7.80 | 80.89 | 0.997 | 1062 | 10.96 | 394 | 0.056 | 1.402 | Air | | | | 5.24 | 18.18 | 9340 | 1.140 | 8.7 | |
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