1995 National Oil and Gas
Assessment and Onshore Federal Lands
Donald L. Gautier, Gordon L. Dolton and Emil D. Attanasi
U. S. Geological Survey Open-File Report
95-75-N
January 1998
Table 3. Estimated volumes by Region of technically recoverable oil, natural gas, and natural gas liquids in undiscovered conventional oil and gas accumulations, continuous-type accumulations, and coalbed gas in onshore Federal Lands by assessment region as of January 1994. Continuous-type estimates from Crovelli and Schmoker, 1997; coalbed gas estimates from Crovelli and Nuccio, 1997. Oil in billions of barrels, gas in trillions of cubic feet, and natural gas liquids (NGL) in billions of barrels]
Conventional |
Continuous-type |
Coalbed gas |
|||||||
Region |
F95 |
Mean |
F5 |
F95 |
Mean |
F5 |
F95 |
Mean |
F5 |
1. Alaska |
|||||||||
Oil |
0.98 |
3.75 |
8.96 |
||||||
Gas |
11.28 |
33.97 |
69.97 |
||||||
NGL |
0.17 |
0.54 |
1.1 |
||||||
2. Pacific Coast |
|||||||||
Oil |
0.1 |
0.3 |
0.66 |
||||||
Gas |
0.2 |
0.55 |
1.36 |
1.12 |
4.88 |
12.4 |
0.02 |
0.06 |
0.1 |
NGL |
0 |
0.01 |
0.03 |
0.01 |
0.05 |
0.12 |
|||
3. Colorado Plateau and Basin and Range |
|||||||||
Oil |
0.31 |
0.84 |
1.78 |
0.11 |
0.27 |
0.51 |
|||
Gas |
2.88 |
5.24 |
9.68 |
12.35 |
18.31 |
25.82 |
9.6 |
11.69 |
14.04 |
NGL |
0.05 |
0.14 |
0.28 |
0.03 |
0.06 |
0.08 |
|||
4. Rocky Mountains and Northern Great Plains |
|||||||||
Oil |
1.25 |
2.2 |
3.54 |
0.02 |
0.04 |
0.06 |
|||
Gas |
8.19 |
13.5 |
21.64 |
49.08 |
100.06 |
175.58 |
1.39 |
3.2 |
6.04 |
NGL |
0.48 |
0.94 |
1.58 |
0.06 |
1.34 |
2.4 |
|||
5. West Texas and Eastern New Mexico |
|||||||||
Oil |
0.06 |
0.21 |
0.43 |
||||||
Gas |
0.29 |
0.84 |
1.73 |
||||||
NGL |
0.01 |
0.04 |
0.08 |
||||||
6. Gulf Coast |
|||||||||
Oil |
0.04 |
0.18 |
0.46 |
0.01 |
0.01 |
0.02 |
|||
Gas |
0.9 |
2.09 |
4.45 |
0.12 |
0.18 |
0.27 |
|||
NGL |
0.03 |
0.09 |
0.2 |
0 |
0 |
0.01 |
|||
7. Midcontinent |
|||||||||
Oil |
0 |
0.03 |
0.08 |
||||||
Gas |
0.47 |
1.33 |
2.77 |
||||||
NGL |
0.01 |
0.03 |
0.07 |
||||||
8. Eastern |
|||||||||
Oil |
0 |
0.03 |
0.12 |
0 |
0 |
0 |
|||
Gas |
0.14 |
0.42 |
1.16 |
1.94 |
3.64 |
6.15 |
0.66 |
0.9 |
1.19 |
NGL |
0 |
0.01 |
0.02 |
0 |
0 |
0 |
|||
Total, onshore Federal Lands |
|||||||||
Oil |
4.38 |
7.54 |
12.93 |
0.15 |
0.32 |
0.57 |
|||
Gas |
34 |
57.94 |
96.79 |
72.38 |
127.08 |
202.36 |
12.97 |
16.08 |
19.63 |
NGL |
1.13 |
1.8 |
2.7 |
0.71 |
1.45 |
2.55 |
|||
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