reservoir geomecanics

Index
σ rr , radial stress 91, 170, 174, 238
σ zz , stress along wellbore axis 174, 238
σ θθ , hoop stress 17, 92, 170, 174, 238
τ rθ , shear stress 170
τ θz , shear stress 238
πplane 93
abnormal pressure 48
acoustic formation factor 50
activity
of drilling mud201, 202
of pore water201
AEP Mountaineer site, W. Virginia 293
Amonton’s law 123
(E. M.) Anderson’s fault and stress classification
scheme 8, 12, 145
anisotropic rock strength and breakout formation 198,
199, 317
anisotropic strength 84, 105
apparent aperture 149
aquathermal pressurization 43
aquifer support 36
Arcabuz–Culebra field, Mexico 392
arch support 304
attenuation (Q −1 ) 75
Athy relation 46
Australia central 225
ballooning (or wellbore loss/gain) 217, 218, 224, 240,
329
basin and range 274
bedding and velocity anisotropy 259
Berea sandstone 104
bilateral constraint 266, 282, 292, 295
Biot parameter 67
blown trap 362
borehole televiewer (BHTV) 146, 147,
199
Bowers relation 50
breakout formation 15, 17, 172, 174, 176, 188,
196
breakout orientation
from multi-arm caliper data181,
183
in deviated wells242, 243
breakout rotations 222, 231, 357, 358, 359
breakout width, w BO 173, 175, 196, 197, 223, 242,
303, 312
brecciation 144, 351
Breckels and van Eekelen stress gradient in Gulf of
Mexico 284
bubble point 36
bulk modulus 61, 64
Burger’s model 78
Byerlee’s law 126
Cajon Pass, CA 222, 232, 235, 343
California central 20, 41, 133, 143, 182,
184
capillary entry pressure 371, 393
Caspian Sea 329
centroid 42, 372
coefficient of thermal expansion 83
cohesion, S 0 89, 91, 100, 123
collision resistive forces 270
Colombia 12, 317, 319
column height 42
compaction 40, 45, 71, 74, 81, 398, 399, 412
compaction band 345
compaction drive 408, 410
compaction trend 47, 53
compartment 27, 37
compressibility 41, 61
compressional wave (P-wave) velocity 59, 63,
109
compressive rock strength 84, 87
compressive stress 6
confined compaction 45
conjugate fault planes 141, 160
constitutive laws and properties 56, 57, 62
constraining S Hmax
from wellbore failure in deviated wells235, 246,
247, 249
from wellbore failure in vertical wells206, 222,
228, 251
Cook Inlet, Alaska 333
Coulomb criterion 124, 365
Coulomb failure function, CFF 124
creep 72, 82
creep compaction 81
critical stress intensity fracture 122
critical stress path 385
445