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-VII

Composition range of soil-gas hydrocarbon over different reservoir types

 

C1/ Cn

C1/C2

1000 x C3/C1

Dry gas

95-100

20-100

2-20

Gas condensate or oil and gas

75-95

10-20

20-60

Oil

5-50

4-10

60-500