Table 3 |
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|
Gas compositions (% mol) in sequential closed reactions, Mowry Shale at 100°C |
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|
1st hr |
2nd hr |
3rd hr |
4th hr |
next 24 hr |
% var |
|
|
|
||||||
|
Methane |
0.77 |
1.80 |
11.21 |
19.89 |
53.13 |
2651 |
|
Ethane |
0.27 |
0.49 |
3.38 |
9.33 |
16.25 |
783 |
|
Propane |
5.69 |
3.61 |
4.50 |
8.96 |
12.06 |
176 |
|
i-Butane |
13.89 |
11.56 |
9.98 |
5.66 |
2.48 |
243 |
|
n-Butane |
21.39 |
15.87 |
12.48 |
10.15 |
7.82 |
208 |
|
i-Pentane |
30.56 |
36.72 |
33.64 |
26.42 |
3.90 |
650 |
|
n-Pentane |
27.41 |
29.95 |
24.82 |
19.59 |
4.37 |
488 |
|
μmol/g, cum |
0.145 |
0.171 |
0.181 |
0.185 |
0.203 |
|
|
Duplicate Reaction |
||||||
|
1st hr |
2nd hr |
3rd hr |
4th hr |
next 24 hr |
% var |
|
|
Methane |
1.80 |
6.82 |
23.16 |
30.24 |
56.26 |
1973 |
|
Ethane |
0.49 |
2.06 |
5.14 |
8.95 |
15.63 |
569 |
|
Propane |
3.61 |
2.86 |
5.40 |
10.41 |
10.17 |
199 |
|
i-Butane |
11.56 |
6.99 |
7.03 |
5.10 |
2.74 |
157 |
|
n-Butane |
15.87 |
11.26 |
9.08 |
9.16 |
6.87 |
111 |
|
i-Pentane |
36.72 |
37.10 |
29.82 |
20.41 |
4.24 |
737 |
|
n-Pentane |
29.95 |
32.90 |
20.38 |
15.74 |
4.10 |
649 |
|
μmol/g, cum |
0.320 |
0.370 |
0.389 |
0.394 |
0.410 |
|
|
|
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|
Yields in μmol C1-C5/g are cumulative. Gas compositions represent gas generated during that period, not cumulative gas compositions. Total gas yield was 43 μg C1-C5/g for the first reaction and 65 μg C1-C5/g for the duplicate reaction. % var is the variance in compositions as % of mean. The average % variance for the seven hydrocarbons is 743% for the first reaction and 628% for the duplicate reaction. |
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|
Mango and Jarvie Geochemical Transactions 2009 10:10 doi:10.1186/1467-4866-10-10 |
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