Table 2.
Average Compositions and Ratios of Light Hydrocarbons from Selected
Soil-Gas Surveys
|
|
Date |
C1/∑Cn (%) |
C1/C2 |
(C3/C1)
x 1,000 |
|
|
|
|
|
|
Sacramento Basin, dry gas |
1972 |
95 |
55 |
6 |
|
|
1974 |
95 |
49 |
8 |
|
|
1975 |
94 |
55 |
11 |
|
|
|
|
|
|
San Joaquin basin, oil and gas |
1972 |
82 |
8 |
46 |
|
|
1974 |
84 |
7 |
61 |
|
|
1975 |
82 |
8 |
56 |
|
|
|
|
|
|
Gas-condensate surveys |
|
|
|
|
|
|
|
|
|
|
|
Southwest
Texas |
1975 |
89 |
12 |
33 |
|
Western
Overthrust |
1976 |
90 |
11 |
30 |
|
Alberta
foothills |
1978 |
88 |
12 |
30 |
|
|
|
|
|
|
Oil surveys |
|
|
|
|
|
|
|
|
|
|
|
Uvalde,
Texas |
1975 |
77 |
5 |
77 |
|
Permian
basin |
1976 |
75 |
5 |
64 |
|
|
|
|
|
|
Utah Overthrust |
|
|
|
|
|
|
|
|
|
|
|
Pineview |
1976 |
77 |
5 |
83 |
|
|
|
|
|
|
Appalachian folded belt |
|
|
|
|
|
|
|
|
|
|
|
Rosehill |
1978 |
73 |
4 |
141 |
|
|
|
|
|
|
Uinta basin |
|
|
|
|
|
|
|
|
|
|
|
Duchesne |
1976 |
68 |
4 |
171 |
|
|
|
|
|
|