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-XII
Diagnostic soil
gas ratios at the Gulf Research Facility, Pittsburgh, Pennsylvania
|
Survey method |
No. samples |
% methane |
C1/C2 |
1000 x C3/C1 |
|
Free soil gas |
73 |
89 |
18 |
21 |
|
Disaggregated gas |
38 |
91 |
25 |
22 |