Affecting factors and application of the stable hydrogen isotopes of alkane gases

HUANG Shipeng,DUAN Shufu,WANG Zecheng,JIANG Qingchun,JIANG Hua,SU Wang,Feng Qingfu,HUANG Tongfei,YUAN Miao,REN Mengyi,CHEN Xiaoyue

Table 2 Geochemical data of natural gas in the Triassic Xujiahe Formation, Sichuan Basin.

Area Gas field Well Horizon Main components/% δ13C/‰ δ2H/‰ Data source CH4 C2H6 C3H8 iC4H10 nC4H10 C1/C1-4 CO2 N2 CH4 C2H6 C3H8 C4H10 CH4 C2H6 C3H8 Western Sichuan Basin Xinchang Xin882 T3x4 93.41 3.78 0.93 0.20 0.18 0.948 0.46 0.85 -34.3 -23.1 -21.4 -20.0 -166 -139 -132 [23] Qiongxi QX3 T3x2 93.57 3.85 0.59 0.09 0.07 0.953 1.55 0.23 -33.1 -23.0 -22.7 -20.6 -157 -133 -135 [23] QX4 T3x2 93.52 3.19 0.62 0.10 0.08 0.959 1.47 0.24 -32.9 -23.2 -23.0 -22.0 -157 -133 -137 QX6 T3x2 95.95 2.48 0.30 0.04 0.04 0.971 0.92 0.21 -31.2 -23.2 -23.1 -20.9 -158 -132 -118 QX10 T3x2 93.57 3.85 0.59 0.09 0.07 0.953 1.55 0.23 -33.2 -22.8 -22.8 -20.4 -154 -135 -123 QX13 T3x2 93.49 3.90 0.63 0.11 0.08 0.952 1.47 0.25 -33.7 -24.1 -23.4 -20.9 -158 -134 -137 QX14 T3x2 96.50 1.57 0.12 0.02 0.01 0.982 1.55 0.23 -30.5 -24.1 -23.8 -157 -135 -137 QXi16 T3x2 96.46 1.74 0.16 0.02 0.02 0.980 1.39 0.20 -30.8 -23.8 -159 -134 -139 QX006-X1 T3x2 93.17 4.12 0.71 0.13 0.11 0.948 1.36 0.26 -31.6 -22.4 -22.4 -157 -132 -139 Zhongba Z2 T3x2 90.82 5.77 1.44 0.31 0.36 0.920 0.47 0.27 -35.5 -24.3 -22.9 -22.5 -170 -144 -136 [25] Z16 T3x2 89.80 6.10 1.65 0.38 0.43 0.913 0.56 0.49 -35.6 -24.3 -22.8 -171 -147 -138 [25] Z19 T3x2 90.36 5.81 1.53 0.31 0.36 0.919 0.45 0.63 -35.0 -24.0 -22.5 -22.2 -170 -144 -135 [25] Z29 T3x2 87.86 6.53 2.10 0.60 0.83 0.897 0.39 0.28 -34.8 -24.8 -23.7 -23.5 -171 -133 [25] Z34 T3x2 90.80 5.70 1.43 0.30 0.40 0.921 0.13 1.20 -35.4 -24.5 -22.8 -170 -143 -135 [23] Z36 T3x2 90.90 5.75 1.49 0.31 0.35 0.920 0.52 0.21 -31.2 -23.2 -23.1 -20.9 -158 -132 -118 [25] Z39 T3x2 87.82 6.36 2.70 0.93 1.39 0.885 0.32 0.33 -36.9 -25.6 -23.2 -173 -147 [25] Z44 T3x2 90.19 5.79 1.55 0.32 0.36 0.918 0.47 0.91 -35.0 -24.0 -22.7 -22.6 -171 -145 -137 [25] Z63 T3x2 91.00 5.75 1.43 0.31 0.35 0.921 0.46 0.28 -35.5 -24.4 -23.0 -22.5 -170 -145 -136 Central Sichuan Basin Hechuan HC106 T3x2 89.28 6.83 1.87 0.46 0.37 0.904 0.21 0.39 -39.8 -27.0 -24.1 -156 -117 -104 [23] H108 T3x2 85.76 8.24 3.25 0.67 0.68 0.870 0.26 0.54 -41.4 -28.3 -25.0 -27.2 -167 -123 -103 HC109 T3x2 92.54 5.15 0.98 0.28 0.20 0.933 0.15 0.31 -38.3 -26.2 -23.6 -147 -124 -111 HC001-1 T3x2 89.27 6.98 1.89 0.46 0.35 0.902 0.16 0.44 -39.5 -27.1 -23.9 -24.4 -153 -120 -101 HC001-2 T3x2 89.87 6.64 1.69 0.43 0.32 0.908 0.16 0.41 -39.0 -26.8 -23.8 -150 -108 -96 HC001-30-x T3x2 90.46 6.14 1.51 0.41 0.35 0.915 0.20 0.39 -38.8 -27.6 -24.5 -25.5 -150 -109 -105 TN1 T3x2-4 -41.8 -27.1 -24.5 -163 -117 -107 TN104 T3x2 86.44 7.69 2.96 0.73 0.67 0.878 0.26 0.43 -41.0 -27.4 -24.0 -26.7 -163 -116 -104 TN105 T3x2 87.78 7.42 2.32 0.57 0.50 0.890 0.27 0.37 -40.4 -27.4 -24.0 -25.9 -157 -116 -103 TN001-2 T3x2 87.10 7.65 2.56 0.65 0.59 0.884 0.30 0.39 -40.7 -27.5 -24.5 -26.1 -160 -111 -101 Guang’an GA002-39 T3x6 -38.8 -26.9 -25.6 -24.7 -164 -133 -131 [23] Anyue Y101 T3x2 84.38 7.87 2.50 0.69 0.79 0.877 0.35 0.71 -41.3 -26.8 -23.7 -25.2 -172 -120 -110 [23] Y105 T3x2 84.64 8.67 3.86 0.70 0.73 0.858 0.29 0.59 -41.6 -28.5 -25.4 -26.2 -167 -117 -104 WD12 T3x2 84.15 10.04 2.95 0.70 0.61 0.855 0.31 0.42 -41.2 -27.4 -23.8 -25.6 -163 -116 -103 This paper WD2-C1 T3x2 84.50 10.12 2.78 0.61 0.50 0.858 0.30 0.50 -40.6 -26.4 -22.8 -24.9 -167 -116 -105 Y101-11 T3x2 83.95 10.13 3.00 0.70 0.60 0.853 0.30 0.43 -41.1 -26.3 -23.0 -25.1 -162 -117 -102 Y101-X12 T3x2 84.18 9.97 2.83 0.66 0.59 0.857 0.00 0.51 -40.8 -27.5 -23.8 -25.3 -168 -117 -105 Y101-X12 T3x2 83.86 10.13 2.89 0.68 0.62 0.854 0.00 0.47 -40.8 -27.3 -23.3 -24.7 -165 -119 -101 Bajiao- chang J33 T3x4 92.95 4.93 1.14 0.20 0.24 0.935 0.38 -40.1 -27.4 -24.6 -24.6 -166 -132 -123 [23] J48 T3x6 91.90 5.30 1.38 0.26 0.31 0.927 0.67 -40.3 -26.5 -24.2 -22.7 -169 -141 -127 J49 T3x2 96.26 2.85 0.53 0.10 0.09 0.964 0.11 -37.0 -27.3 -24.2 -22.9 -156 -132 -124 J57 T3x 90.99 5.51 1.71 0.33 0.33 0.920 0.41 0.25 -37.3 -25.5 -22.9 -22.7 -162 -132 -123