Light Hydrocarbons for Petroleum and
Gas Prospecting
V.T. Jones, III, M.D. Matthews and D.M. Richers
Geochemical Remote Sensing of the Subsurface. Edited by M.Hale
Handbook of Exploration Geochemistry, Vol. 7 (G.J.S. Govett, Editor)
©1999 Elsevier Science B.V. All rights reserved
Preprint
TABLE 5-VIII
Average composition
ratios of soil-gas hydrocarbons over different reservoirs
|
Reservoir type |
Location |
Date |
C1/ Cn |
C1/C2 |
1000 x C3/C1 |
|
Dry gas |
Sacramento Basin |
1972 |
95 |
55 |
6 |
|
|
|
1974 |
95 |
49 |
8 |
|
|
|
1975 |
94 |
55 |
11 |
|
Oil and gas |
San Joaquin Basin |
1972 |
82 |
8 |
46 |
|
|
|
1974 |
84 |
7 |
61 |
|
|
|
1975 |
82 |
8 |
56 |
|
Gas condensate |
Southwest Texas |
1975 |
89 |
12 |
33 |
|
|
|
1976 |
90 |
11 |
30 |
|
|
Western Overthrust |
1978 |
88 |
12 |
30 |
|
Oil |
Uvalde, Texas |
1975 |
77 |
5 |
77 |
|
|
Permian Basin |
1976 |
75 |
5 |
64 |
|
|
Utah Overthrust, Pineview |
1976 |
77 |
5 |
83 |
|
|
Appalachians, Rosehill |
1978 |
73 |
4 |
141 |
|
|
Uinta Basin, Duchesne |
1976 |
68 |
4 |
171 |