Page 124 - Origin and Prediction of Abnormal Formation Pressures

SMECTITE-ILLITE TRANSFORMATIONS 103
vies, in the Apsheron Archipelago, the South Apsheron Offshore Zone and the Baku Archipelago and Lower Kura region (after Buryakovsky et al., 1995, table 1,
0.0135
Baku Archipelago and Lower Kura region qsh r (MPa/m) ~ o ~ o0.0187 0.0179 0.0 193
~
O
9 Vies (MPa/m) o ~ o ~0.0 140 0.0137 O ~ 0.0142

0.0167

e~0

9 pore pressure gradient in shale, qd,, and pore pressure gradient in reservoir rock, , '$%h (%) 21 18 16 13
725
r hsh (m) O 900 q'~ ~ 460 O 350

(MPa/m) 0.0 124 19 0.01 16 0.01 16
Dies O O 0.01 ~ O

South Apsheron Offshore Zone

O
9 l)$h (MPa/m) o ~ o 0.01 46 0.0137 O ~ 0.0149 ~ 0.0 148
15
.. +..a d%h (%) tt~ r 12 ~ 10 oO 8
9
o~ hsh (m) r 250 O Ig') r162 oO Ig'3
185
r 235
,---~ ,---~ I50
q'~ q'~ O
,.azZ
(MPa/m) ~.C~ oO ~ 0.0100 oO 0.0098
0.0108
0.01 I6
rlres
~<
.,-.~ Variation with depth (m) of average thickness of shales, h5h, shale porosity, &,, (MPa/m) 22
9 %h 0.01 0.0125 0.0120 0.01 10
Apsheron Archipelago dJsh (%) 12 8 5 3

TABLE 4-2 p. 207) Depth (m) hh (m) r 2000 O ~ 50 r162 "r 4000 40 3000 O ~ 30 q'~ 5000 O O 20

~
O