Geology Reference
In-Depth Information
Table 5.6
(Cont.)
Clay
sequence
burial
depth
range, km
Clay
sequence
development
area, km
2
Clay
sequence
thickness,
km
Clay
sequence
volume,
km
3
Clay total porosity
range in the burial
interval, %
Duration of
deposition
in burial
interval,
MY
Clay
compaction
rate, 10
-6
%/
year
Clays in alternating clay/sand sequences of basin's south lank and axial zone
0.02-0.25
10.00
1.00
10.00
46.0
43.0
3.0
0.83
3.6
0.25-1.50
10.00
1.00
10.00
33.0
32.0
11.0
4.20
2.6
1.50-3.00
10.00
1.00
10.00
32.0
21.0
11.0
8.30
1.3
3.00-4.00
10.00
1.00
10.00
21.0
17.0
4.0
6.67
0.6
4.00-6.00
10.00
1.00
10.00
17.0
15.0
2.0
13.33
0.1
* For Darcy's equation calculations, it was assumed in the irst two cases that the “neutral” surface (boundary between water
squeeze-up and down) is positioned in the middle of the clay sequence. Pressure gradient over a distance of 1,000 m was
assumed to be 10 MPa
