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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)]).