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Table 1 The distribution of C1-C5 hydrocarbons generated from Mowry shale, 100°C.

From: Metathesis in the generation of low-temperature gas in marine shales

  Mowry 1
time (hr) 1 2 3 4 5 6 7 8 9 10 11
C 1 3.42 2.96 2.26 2.15 2.11 2.42 1.53 1.23 0.94 1.02 1.19
C 2 0.87 0.83 0.53 0.52 0.58 0.68 0.42 0.34 0.39 0.34 0.32
C 3 5.00 2.69 0.90 0.72 0.65 0.62 0.41 0.37 0.25 0.24 0.29
i-C 4 25.74 12.65 3.16 1.84 1.09 0.61 0.31 0.20 0.10 0.10 0.10
n-C 4 29.01 14.29 2.99 1.90 1.28 0.92 0.53 0.26 0.31 0.25 0.26
CP 12.55 6.87 1.34 0.91 0.64 0.37 0.24 0.17 0.08 0.08 0.08
i-C 5 72.07 37.75 8.26 5.18 3.26 1.88 1.01 0.38 0.25 0.25 0.08
n-C 5 54.42 28.27 5.31 3.44 2.23 1.38 0.81 0.37 0.24 0.28 0.27
Sum mol 203.08 106.31 24.76 16.67 11.83 8.87 5.26 3.32 2.56 2.56 2.61
Sum wt 13462 6987 1520 984 657 435 252 139 102 101 94
Product AMW 66 66 61 59 56 49 48 42 40 40 36
log Q 1.35 1.07 0.86 0.75 0.61 0.50 0.55 0.60 0.18 0.31 0.52
log Q* 1.36 1.28 1.15 1.04 0.85 0.72 0.66 0.41 0.47 0.49 0.51
  Mowry 2
time (hr) 1 2 3 4 5 6 7 8 9 10 11
C 1 2.78 2.70 2.08 1.72 1.73 1.61 1.69   0.98 1.15 0.88
C 2 0.81 0.92 0.64 0.44 0.52 0.48 0.52   0.28 0.35 0.28
C 3 9.31 4.34 1.19 0.79 0.68 0.54 0.53   0.25 0.29 0.24
i-C 4 31.63 13.39 2.71 1.46 0.81 0.47 0.32   0.11 0.12 0.06
n-C 4 43.35 18.12 3.49 1.94 1.29 0.88 0.71   0.29 0.34 0.27
CP 14.59 7.31 1.70 1.01 0.67 0.40 0.26   0.10 0.10 0.05
i-C 5 80.07 37.15 8.27 4.61 2.77 1.58 1.01   0.24 0.26 0.18
n-C 5 68.80 31.18 6.49 3.63 2.23 1.33 0.89   0.28 0.36 0.23
Sum mol 251.35 115.11 26.57 15.60 10.70 7.30 5.93   2.52 2.97 2.17
Sum wt 16568 7521 1646 936 602 381 281   102 120 84
Product AMW 66 65 62 60 56 52 47   41 40 39
log Q 1.59 1.14 0.78 0.84 0.64 0.58 0.52   0.49 0.45 0.43
log Q* 1.20 1.09 0.98 0.98 0.80 0.74 0.64   0.61 0.59 0.55
  1. Data in mol × 109 hydrocarbon/g shale in a 2 ml aliquot collected at the hour indicated. Sum wt is wt C1-C5 hydrocarbons generated in the hour indicated, (g/g shale hr) × 109. Product AMW is the wt product divided by moles product: Sum wt/Sum mol. Log Q is log ([(C1)*(C3)]/[(C2)2]). Log Q* is log ([(C1)*(n-C4)]/[(C2)*(C3)]).