Page 292 - Geology of Carbonate Reservoirs

INDEX 273

shallow subtidal (neritic), 121–124 resistivity, 8,10
slope and slope toe, 126–129 shapes, as indicators of depositional
slope-break, 124–126 environments in siliciclastics, 49, 202

tidal flat and lagoon, 117–121 “signatures” as indicators of rock and pore
Image analysis, petrographic (PIA), 209 types, 202
Impedance contrast, 8, 53, 206 sonic amplitude, 192
Isooctane, in wettability experiments, 63 spontaneous potential (SP), 59
velocity deviation, 50
James Limestone Formation (Cretaceous) Luminescence, cathode (CL), 168, 225
Texas, 124
Magetism, earth, in exploration, 8
Karst, 147 Maps
caves, 162 depositional facies, 8
caverns, 147, 162 electrofacies, 10, 49, 107
paleocaves, 226 statistical (computer processed), 52
as reservoirs, 162–163 interval isopach (paleostructure), 8, 219
pinnacles, 162 pore facies, 69
Puckett field (Lower Ordovician) Texas, 162 subsurface, 84

sinkholes, 155, 162 Mariana Trench, 129
towers, 162 Material, behavior of under stress, 44, 177
Yates field (Permian) Texas, 162 Megafossils, benthic, 13

Kerogen, 145 Metamorphism
Keuper, evaporites, Triassic (Germany), 87 contrasted with diagenesis, 145
Kirkuk field, Iran, 191 organic, 145

Kohout circulation, 155 Micrite, 15
Micritization, 29
Lattice, crystal, deformation, types of, 201 Microbes, calcifi ed, 28
Limestones, bituminous, 109 Microcalcite, microrhombic, 150–151. See also
Lisbon field, Utah, 161 Porosity, “chalky”

“Lith logs”, 8 Microporosity, diagenetic, 91
computer processed interpretation (cpi) log, Microscopy, scanning electron (SEM), 209
52 Microstructures, internal, 28
creating synthetic (Schlumberger M–N plot), Midland Basin, Texas, 231, 233
51 Eastern Shelf of, 233, 237
from well cuttings, precautions in using, Minerals
207–208 accessory, 201
software applications to compute synthetic, 51 metastable
Lithofacies, synthetic, 52 aragonite, 26, 126, 131, 148, 153, 166, 213
“STATMIN”, computer program for calcite, magnesian (Mg), 26, 148, 153, 166,
generating, 202 213
Lithogenetic units, 83. See also Facies Mineralization
Logs, wireline exotic in reservoirs, 161, 169
acoustic, 8, 107, 192 metamorphic, 146
caliper, 193 Mississippi Valley Type (MVT), 146
cased hole, 47 Muschelkalk, limestone, Triassic (Germany), 87
characteristics, as proxies for fundamental
rock properties, 204 Naphthenic acid, in wettability experiments, 63
density, 8, 107 Neomorphism. See also Diagenesis
dipmeter, 18, 107 aggradational, 148
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FMI , FMS , UBI and fractures, 182, 193 defi ned, 159
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FMI output illustrated, 183 degradational, 148
gamma ray, 8,10 of limestones, 151
imaging, 9,18,49, 107, 249 Neritic (shallow subtidal) environment, 97
neutron, 8, 107 Nesson Anticline, 248
NMR, 49, 107, 205, 209 North Haynesville (Smackover) fi eld, Louisiana,
open hole, 47 223
photoelectric effect, 8 depositional reservoir, example of, 214–219