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-XI
Comparison of
results of free soil gas and disaggregated soil gas surveys, Rosehill, Virginia
(Richers, 1984)
|
Survey method |
No. of sites |
% methane |
C1/C2 |
1000 x C3/C1 |
|
Free soil gas |
145 |
72 |
7 |
110 |
|
Disaggregated gas |
128 |
70 |
7 |
117 |