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-IV
Hydrocarbon
diffusion times (minimum years) through sediments of different thickness (Antonov
et al., 1971)
|
Diffusion
coefficient |
Steady
state |
Non-steady
state |
||||
|
(cm/sec) |
1000
m |
2000
m |
3000
m |
1000
m |
2000
m |
3000
m |
|
5
x 10-5 |
4.9 |
20 |
44 |
0.2 |
0.7 |
1.6 |
|
1
x 10-5 |
24 |
98 |
220 |
0.9 |
3.6 |
8.1 |
|
5
x 10-6 |
49 |
195 |
440 |
1.8 |
7.2 |
16 |
|
1
x 10-6 |
244 |
976 |
2200 |
9.8 |
36 |
81 |
|
5
x10-7 |
488 |
1950 |
4400 |
18 |
72 |
162 |
|
1
x 10-7 |
2440 |
9760 |
22000 |
90 |
360 |
810 |
|
5
x 10-8 |
4880 |
19500 |
44000 |
180 |
720 |
1620 |
|
1
x 10-8 |
24400 |
97600 |
224000 |
900 |
3600 |
8100 |