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TABLE 1. Samplng of North Americas hydrocarbon depositsand related biogenic methane
potential |
|
|
Name
of substrate |
Amount
of
substrate,
Bbbl* or BST* |
Equivalent
methane
substrate in
place, Tcf |
Methane
at a
1% conversion
factor (CF), Tcf |
Number of yrs.
of 23 Tcf/yr.
US gas supply
at a 1% CF |
|
|
|
|
|
US residual
crudein all states |
262
Bbbl |
925 |
9 |
0.4 |
|
|
Powder
River basincoals, Mont./Wyo.,
no min. thick. Cutoff |
1,300
BST |
8,638 |
86 |
3.8 |
|
|
North
Dakota lignite |
351
BST |
2,069 |
20 |
0.9 |
|
|
Texas
lignite |
59
BST |
359 |
3 |
0.2 |
|
|
Illinois
basin coal |
365
BST |
2,740 |
27 |
1.2 |
|
|
San Juan
basin coal |
358
BST |
2,593 |
25 |
1.2 |
|
|
Piceance
basin coal |
289
BST |
2,229 |
22 |
1.0 |
|
|
Northern
Appalachia coal |
352
BST |
3,430 |
34 |
1.5 |
|
|
Alaska
coal, no min. thickness cutoff |
5,500
BST |
36,213 |
362 |
15.7 |
|
|
Devonian/Ohio
shale kerogen |
420
BST |
8,713 |
87 |
3.8 |
|
|
Antrim
Shale kerogen |
877
BST |
18,429 |
184 |
8.0 |
|
|
New Albany
shale kerogen |
716
BST |
14,817 |
148 |
6.4 |
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|
Canadian Tar
sand bitumen |
1,425
Bbbl |
5,065 |
51 |
2.2 |
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|
|
|
|
Total
methane potential |
106,220
Tcf |
1,063
Tcf |
46.3 |
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*Billion barrels (Bbbl); billion short tons (BST) |
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