| Home > Forecasts & Analysis > United States Producing and Nonproducing Crude Oil and Natural Gas Reserves > Tables 1-3 |
United States Producing and Nonproducing Crude Oil and Natural Gas Reserves
From 1985 Through 2004
|
Table 1. Natural Gas Reserves by Category and Region*
At Year-End 1985 and Year-End 2004
(Wet After Lease Separation)
Printer friendly version 
Region |
Total Natural Gas Reserves
(trillion cubic feet) |
Nonproducing Natural Gas Reserves
(trillion cubic feet) |
Producing Natural Gas Reserves
(trillion cubic feet) |
| |
1985 |
2004 |
1985 |
2004 |
1985 |
2004 |
| Alaska |
15.2 |
8.5 |
1.0 |
0.7 |
14.1 |
7.8 |
| Northeast |
5.0 |
12.0 |
0.4 |
2.5 |
4.5 |
9.6 |
| Midcontinent |
30.7 |
27.0 |
2.0 |
5.4 |
28.7 |
21.7 |
| Southwest |
15.8 |
20.1 |
0.8 |
4.5 |
15.0 |
15.7 |
| Onshore Gulf Coast |
34.5 |
40.2 |
7.5 |
13.1 |
27.0 |
27.1 |
| Rocky Mountain |
24.6 |
59.5 |
5.0 |
15.0 |
19.6 |
44.5 |
| Pacific (On & Offshore) |
5.5 |
3.1 |
0.8 |
0.7 |
4.6 |
2.4 |
| Offshore Gulf of Mexico |
36.9 |
20.0 |
15.4 |
9.6 |
21.6 |
10.4 |
|
|
|
|
|
|
|
| Onshore Lower-48 |
114.6 |
161.5 |
16.1 |
41.0 |
98.5 |
120.5 |
| Offshore Lower-48 |
38.4 |
20.6 |
15.9 |
9.7 |
22.4 |
10.8 |
| Total Lower-48 |
153.0 |
182.1 |
32.1 |
50.7 |
121.0 |
131.3 |
| |
|
|
|
|
|
|
| United States |
168.2 |
190.5 |
33.1 |
51.4 |
135.1 |
139.1 |
|
Table 2: Conventional and Unconventional Natural Gas Reserves*
At Year-End 1985 and Year-End 2004
(Wet After Lease Separation)
Printer friendly version
Natural Gas Category |
Total Natural Gas Reserves
(trillion cubic feet) |
Nonproducing Natural Gas Reserves
(trillion cubic feet) |
Producing Natural Gas Reserves
(trillion cubic feet) |
| |
1985 |
2004 |
1985 |
2004 |
1985 |
2004 |
| Conventional Natural Gas |
144.4 |
128.3 |
28.1 |
36.0 |
116.3 |
92.2 |
| |
|
|
|
|
|
|
| Unconventional Natural Gas |
23.8 |
62.3 |
5.0 |
15.4 |
18.8 |
46.8 |
| - Tight Sandstones |
22.1 |
44.1 |
4.8 |
11.7 |
17.2 |
32.4 |
| - Natural Gas Shales |
0.5 |
7.3 |
0.0 |
2.1 |
0.4 |
5.3 |
| - Coalbed Methane |
1.3 |
10.9 |
0.2 |
1.6 |
1.1 |
9.2 |
| |
|
|
|
|
|
|
| United States |
168.2 |
190.5 |
33.1 |
51.4 |
135.1 |
139.1 |
|
Table 3: Crude Oil Reserves by Category and Region*
At Year-End 1985 and Year-End 2004
(Includes Condensates)
Printer friendly version
| Region |
Total
Crude Oil Reserves
(billion barrels) |
Nonproducing
Crude Oil Reserves
(billion barrels) |
Producing
Crude Oil Reserves
(billion barrels) |
| |
1985 |
2004 |
1985 |
2004 |
1985 |
2004 |
| Alaska |
7.1 |
4.3 |
0.4 |
0.7 |
6.7 |
3.6 |
| Northeast |
0.3 |
0.1 |
0.0 |
0.0 |
0.3 |
0.1 |
| Midcontinent |
1.0 |
0.7 |
0.1 |
0.2 |
0.9 |
0.6 |
| Southwest |
5.8 |
4.4 |
0.1 |
0.7 |
5.7 |
3.7 |
| Onshore Gulf Coast |
2.9 |
1.3 |
0.3 |
0.4 |
2.6 |
0.9 |
| Rocky Mountain |
2.1 |
2.0 |
0.1 |
0.4 |
2.0 |
1.6 |
| Pacific (On & Offshore) |
5.7 |
3.9 |
0.7 |
0.3 |
5.0 |
3.5 |
| Offshore Gulf of Mexico |
2.4 |
4.5 |
0.8 |
2.9 |
1.5 |
1.7 |
| |
|
|
|
|
|
|
| Onshore Lower-48 |
16.3 |
11.7 |
0.8 |
2.0 |
15.6 |
9.7 |
| Offshore Lower-48 |
3.9 |
5.3 |
1.4 |
2.9 |
2.4 |
2.3 |
| Total Lower-48 |
20.2 |
17.0 |
2.2 |
4.9 |
18.0 |
12.0 |
| |
|
|
|
|
|
|
| United States |
27.3 |
21.3 |
2.6 |
5.6 |
24.7 |
15.6 |
|
|
|
|