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Table 1 Gas compositions (% mol) under isothermal He flow over time

From: Low-temperature gas from marine shales: wet gas to dry gas over experimental time

 

Floyd Shale, 50°C

     

time (min)

Methane

Ethane

Propane

i-Butane

n-Butane

i-Pentane

n-Pentane

0

15.92

28.30

23.48

3.57

13.53

6.11

9.10

8

16.14

33.23

24.83

3.24

11.31

4.41

6.84

16

15.53

34.42

25.87

3.42

11.07

3.67

6.02

24

12.16

32.54

27.51

3.95

12.37

4.54

6.93

32

11.34

34.31

27.97

3.61

12.00

4.15

6.63

40

13.02

34.43

27.71

3.40

11.71

3.70

6.03

48

11.36

35.12

28.13

3.48

11.89

3.63

6.40

56

10.35

35.41

28.47

3.54

11.88

4.15

6.21

64

11.58

34.91

28.28

3.31

11.67

4.30

5.95

72

11.42

34.76

28.69

3.60

11.97

3.72

5.84

80

11.08

34.73

28.35

3.50

11.61

4.73

6.00

88

8.76

36.37

29.74

3.47

11.96

3.66

6.04

% var

44

12

12

1

3

12

12

 

New Albany Shale, 100°C

     

time (min)

Methane

Ethane

Propane

i-Butane

n-Butane

i-Pentane

n-Pentane

0

3.30

29.05

36.68

3.13

17.24

2.67

7.92

4

1.18

37.08

41.00

3.12

13.71

1.39

2.53

8

1.02

34.90

39.13

3.25

15.96

2.11

3.63

12

0.85

34.13

38.09

3.07

16.74

2.43

4.69

18

0.75

33.27

39.63

3.40

16.67

2.19

4.09

21

0.45

27.45

38.69

3.88

18.62

3.50

7.41

34

0.46

26.31

38.24

3.24

18.00

3.58

10.16

45

0.54

26.19

40.16

2.94

18.20

2.92

9.04

55

0.70

25.02

41.61

2.94

18.38

2.73

8.62

65

0.71

23.68

42.29

3.09

18.54

2.86

8.82

% var

71

75

8

2

14

16

109

 

Mowry Shale, 100°C

     

time (min)

Methane

Ethane

Propane

i-Butane

n-Butane

i-Pentane

n-Pentane

0

9.15

6.84

19.12

7.94

22.71

12.99

21.25

8

4.50

4.34

18.36

11.25

24.02

17.57

19.97

16

3.86

2.95

16.79

12.06

24.43

18.99

20.92

24

5.11

3.16

15.77

11.40

23.29

19.53

21.74

32

-

4.14

16.06

12.88

24.50

20.55

21.87

40

-

-

16.47

13.14

24.34

22.81

23.24

48

-

-

15.97

13.84

24.98

23.06

22.15

56

-

-

15.33

14.44

24.55

23.15

22.52

64

-

-

15.27

14.20

23.92

24.16

22.45

72

-

-

14.92

15.17

23.64

23.71

22.56

80

-

-

11.21

15.06

23.40

26.73

23.60

% var

101

56

26

35

2

68

5

  1. Times are in minutes. Yields: Floyd, 57 μg C1-C5/g; New Albany, 1.2 mg C1-C5/g; Mowry, 25 μg C1-C5/g. % var is variance as % of mean. The dashes indicate no data. Average % variance is 14% in the Floyd data; 42% in the New Albany data; 42% in the Mowry data.