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Composition and origin of molecular compounds in the condensate oils of the Dabei gas field, Tarim Basin, NW China
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ZHU Guangyou,CHI Linxian,ZHANG Zhiyao,LI Tingting,YANG Haijun,CHEN Weiyan,ZHAO Kun,YAN Huihui
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Table 4 Natural gas compounds of Cretaceous Bashijiqike Formation in the Dabei gas field.
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| Well | Depth/m | Natural gas Compounds/% | | Carbon isotopic value/‰ | | C1 | C2 | C3 | C4+ | N2 | CO2 | C1 | C2 | C3 | C4 | | DB1 | 5 586 | 94.8 | 2.30 | 0.36 | 0.35 | 1.12 | 0.44 | | -33.1 | -21.4 | | | | DB101-1 | 5 730 | 96.1 | 2.24 | 0.37 | 0.31 | 0.33 | 0.54 | | -31.6 | -22.5 | -21.7 | -22.6 | | DB101-5 | 5 744 | 95.1 | 2.11 | 0.45 | 0.36 | 0.92 | 0.62 | | -29.3 | -20.7 | -22.1 | -20.6 | | DB2 | 5 669 | 95.3 | 2.25 | 0.38 | 0.33 | 1.19 | 0.39 | | -30.8 | -21.5 | -20.8 | | | DB202 | 5 763 | 94.8 | 2.16 | 0.36 | 0.30 | 1.27 | 0.45 | | -30.4 | -21.6 | -22.5 | -21.4 | | DB207 | 5 527 | 95.8 | 2.20 | 0.17 | 0.17 | 0.64 | 0.51 | | -29.8 | -22.2 | | | | DB208 | 5 681 | 96.5 | 2.22 | 0.01 | 0.01 | 0.51 | 0.59 | | -30.2 | -21.4 | -21.6 | |
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