Page 295 - Geology of Carbonate Reservoirs

276 INDEX

San Andres Formation (Permian), Texas and Snap-off, 72
New Mexico, peritidal deposits in, 117 Source rocks, 5
Sand waves, Great Bahama Banks, 126 Spits, barrier, 116. See also detached shoreline
Sands, tight gas, 46 Spraberry Sandstone trend, Texas, 191, 233.
Saturation, 56 See also Happy fi eld
equilibrium and diagenesis, 147 Spur and groove structures, 29, 125
oil, 57 Stratigraphic
water, 57 Code of Stratigraphic Nomenclature, 83
effective, 62, 160 correlation, 85
total, 62, 160 International Guide To Stratigraphic
Scaling-up, pore-to-reservoir, 206–207 Classifi cation, 83
Scanning electron microscopy (SEM), see mechanical, influence on fracturing, 185

Microscopy, scanning electron stacking patterns, sequence, 102
Sealing capacity (h max ), calculating, 70–71, Stratigraphy
250 allo, 100
Seals, 5, 69 cement, 168, 171, 225
anhydrite plugging, 166 chrono, time and time-rock units in, 83
Sediment production vs retention, 81 defi ned, 77
Seepage refl ux, see Refl ux, brine and genetic, 100
dolomitization litho, rock units in, 83
Seismic parasequences, 101–102
amplitude versus offset (AVO) analysis, seismic, 53, 99
191 sequence, 53, 80, 84
attributes, 8, 191, 244 defi ned, 99
data, 3D, 8 Strain, defi ned, 177

reflections, 53, 206 Stress
traces, as correlation aids, 88 compression, 178
velocities, 54 defi ned, 177
wave characteristics, 53 extension, 178
Seismology principal, intermediate (σ 2 ), maximum (σ 1 ),
refl ection, 8 minimum (σ 3 ), 178
3D, 53 shear, 178
Separability, limit of, 54, 206 Structures, sedimentary, 15, 20
Shelves in beach-dune deposits, 113–114
environmental subdivisions on, 81 in tidal flat and lagoon deposits, 119–121

Guadalupian (Permian),West Texas–New
Mexico, 126 Tension
open, defi ned, 81 adhesion, 62, 65
rimmed, 79–80, 93 interfacial, 62, 66
rims, absence of, 81 surface, 63
South Florida, 125 Texture. See also Grain size
Shoals, grainstone, 124 depositional, 9, 15
Siliciclastic sandstones grain packing, 17
diagenesis in, 9 grain shape, 17
ideal depositional successions (models) in, 95, sorting, 17
203 Thamama Group (Cretaceous) Middle East,
Slickensides, 182 reefs and grainstones in, 126
Slope breaks, deep water, 82 Tidal prism, 119
Smackover Formation (Jurassic) Time, geological
Alabama absolute, 84–85
cyclicity in, 170 relative, 84–85
pore facies in, 69 ways to measure, 84–85
Arkansas, capillary pressure curves from, 67 Time-rock units, classification of, 86

Gulf Coast, 61, 211 Trace fossils, in basinal environments, 130
Louisiana, 161 Transcontinental Arch of North America,

salt tectonics and depositional patterns in, Cambro-Ordovician tidal flat deposits on,
136 120